1) The document discusses the development of 6th generation stealth aircraft technology, which incorporates nano-technology.
2) Nano-technology allows for lightweight composite materials with high strength to be used in airframes, reducing radar detection. It can also enable non-reflective coatings, low noise engines, and infrared signature reduction.
3) The 6th generation aircraft aims to overcome limitations of past stealth designs like reduced payload and maneuverability through these nano-enabled improvements and new propulsion systems.
Stealth refers to the act of trying to hide or evade detection. Stealth technology is
ever increasingly becoming a paramount tool in battle especially “high technology wars”
if one may occur in the future where invisibility will mean invincibility. Able to strike with
impunity, stealth aircraft, missiles and warships are virtually invisible to most types of
military sensors. The experience gained at the warfront emphasizes the need to
incorporate stealth features at the design stage itself. According to conventional military
wisdom, surprise is the best form of attack. With evermore sophisticated methods of
detection, however, catching the enemy unawares has becoming increasingly difficult.
Thus paving way to the development of increasingly sophisticated technologies that help
in evading the enemy's ever vigilant “eyes”.
“The future is bright, the future is stealth”
stealth technology (or LO for "low observability") is not a single technology. It is a combination of technologies that attempt to greatly reduce the distances at which a person or vehicle can be detected; in particular radar cross section reductions, but also acoustic, thermal, and other aspects:
Stealth refers to the act of trying to hide or evade detection. Stealth technology is
ever increasingly becoming a paramount tool in battle especially “high technology wars”
if one may occur in the future where invisibility will mean invincibility. Able to strike with
impunity, stealth aircraft, missiles and warships are virtually invisible to most types of
military sensors. The experience gained at the warfront emphasizes the need to
incorporate stealth features at the design stage itself. According to conventional military
wisdom, surprise is the best form of attack. With evermore sophisticated methods of
detection, however, catching the enemy unawares has becoming increasingly difficult.
Thus paving way to the development of increasingly sophisticated technologies that help
in evading the enemy's ever vigilant “eyes”.
“The future is bright, the future is stealth”
stealth technology (or LO for "low observability") is not a single technology. It is a combination of technologies that attempt to greatly reduce the distances at which a person or vehicle can be detected; in particular radar cross section reductions, but also acoustic, thermal, and other aspects:
Aircraft Stealth Technology is the tech part of an airplane most students get curious about. Stealth is the technology with help of which we can hide an airplane from enemy's eye and radar both. The scientific name for stealth technology is low observatory, which incorporates several concepts into one technology. Stealth is nothing new, it has been used since caveman years with covering up in leaves, but it is now used in military aviation. Stealth does not always refer to just radar there are other forms of detections such as heat signatures. check other aspect by <a>read more</a>
Stealth refers to the act of trying to hide or evade detection.
Stealth technology is ever increasingly becoming a paramount
tool in battle especially “high technology wars” if one may
occur in the future where invincibility means invincibility.
Able to strike with impunity, stealth aircraft, missiles and
warships are virtually invisible to most types of military
sensors. The experience gained at the warfront emphasizes the
need to incorporate stealth features at the design stage itself.
The other purpose is to share the recent achievements related to
the advanced composite materials used on various aerostructures
across the globe. Also discussed are the possibilities
of achieving stealth capability on our existing fleet of fighter
and bomber aircrafts of our Indian Armed forces using
composite and smart materials.
Stealth technology also known as LOT (Low Observability
Technology) is a technology which covers a range of
techniques used with aircraft, ships and missiles, in order to
make them less visible (ideally invisible) to radar, infrared and
other detection methods.
Stealth Technology essentially deals with designs and materials
engineered for the military purpose of avoiding detection by
radar or any other electronic system.
Stealth aircraft are aircraft that use stealth technology to make
it harder to be detected by radar and other means than
conventional aircraft by employing a combination of features
to reduce visibility in the visual, audio, infrared and radio
frequency (RF) spectrum. Well known examples include the
United States' F-117 Nighthawk (1980s-2008), the B-2 Spirit
"Stealth Bomber," and the F-22 Raptor.
The main objective of this topic is to know and study how stealth technology plays a major role In the modern and future combat warfare.
This report also deals with the study of various factors that include to make any aircraft/ship/drones etc. to be stealthy.
This report also distinguishes between the conventional and non-conventional {stealth} platforms against the miscellaneous stealth categories.
A NANOTECHNOLOGY AIRCRAFT WITH STEALTH TECHNOLOGYIJRISE Journal
The success of the Aviation Industry (Defense) depends on various factors ranging from less visibility, reduction
of weight, availability of materials with multifunctional properties, carrying more payload, eco-friendly fuels, less fuel
consumption, faster and highly responsive communication systems, less or no repairs, extended and safe life, reduced time
frame of development cycle from concept to implementation and many more. Nanotechnology is recognized as a very strong
innovation driver and is therefore seen as a strategic technology for the world’s future economy. Nano-materials with their
exceptional multifunctional properties may transform the functioning of aviation (Defense) industry dramatically. Stealth
properties give it the unique ability to penetrate an enemy's most sophisticated defenses and threaten its most valued and
heavily defended targets. Stealth refers to the act of trying to hide or evade detection. It is not so much a technology as
a concept that incorporates a broad series of technologies and design features. Stealth does not always refer to radar.
Reducing an aircraft's heat signature is also important. This is usually done by channeling the engine exhaust through long
tubes and mixing it with cooler outside air. This paper shows the modern aviation design requirements like faster, miniature,
highly maneuverable, self-healing, intelligence guided, smart, eco-friendly, light weight warrant for materials with
extraordinary mechanical and multifunctional properties with stealth technology. Stealth technology is the use of special
radar absorbent materials, flat angular surface design and other techniques to minimize the amount of radiation r eflected to
a radar installation, causing an aircraft to appear as a much smaller signal or not at all. Stealth means 'low observable'.
Aircraft Stealth Technology is the tech part of an airplane most students get curious about. Stealth is the technology with help of which we can hide an airplane from enemy's eye and radar both. The scientific name for stealth technology is low observatory, which incorporates several concepts into one technology. Stealth is nothing new, it has been used since caveman years with covering up in leaves, but it is now used in military aviation. Stealth does not always refer to just radar there are other forms of detections such as heat signatures. check other aspect by <a>read more</a>
Stealth refers to the act of trying to hide or evade detection.
Stealth technology is ever increasingly becoming a paramount
tool in battle especially “high technology wars” if one may
occur in the future where invincibility means invincibility.
Able to strike with impunity, stealth aircraft, missiles and
warships are virtually invisible to most types of military
sensors. The experience gained at the warfront emphasizes the
need to incorporate stealth features at the design stage itself.
The other purpose is to share the recent achievements related to
the advanced composite materials used on various aerostructures
across the globe. Also discussed are the possibilities
of achieving stealth capability on our existing fleet of fighter
and bomber aircrafts of our Indian Armed forces using
composite and smart materials.
Stealth technology also known as LOT (Low Observability
Technology) is a technology which covers a range of
techniques used with aircraft, ships and missiles, in order to
make them less visible (ideally invisible) to radar, infrared and
other detection methods.
Stealth Technology essentially deals with designs and materials
engineered for the military purpose of avoiding detection by
radar or any other electronic system.
Stealth aircraft are aircraft that use stealth technology to make
it harder to be detected by radar and other means than
conventional aircraft by employing a combination of features
to reduce visibility in the visual, audio, infrared and radio
frequency (RF) spectrum. Well known examples include the
United States' F-117 Nighthawk (1980s-2008), the B-2 Spirit
"Stealth Bomber," and the F-22 Raptor.
The main objective of this topic is to know and study how stealth technology plays a major role In the modern and future combat warfare.
This report also deals with the study of various factors that include to make any aircraft/ship/drones etc. to be stealthy.
This report also distinguishes between the conventional and non-conventional {stealth} platforms against the miscellaneous stealth categories.
A NANOTECHNOLOGY AIRCRAFT WITH STEALTH TECHNOLOGYIJRISE Journal
The success of the Aviation Industry (Defense) depends on various factors ranging from less visibility, reduction
of weight, availability of materials with multifunctional properties, carrying more payload, eco-friendly fuels, less fuel
consumption, faster and highly responsive communication systems, less or no repairs, extended and safe life, reduced time
frame of development cycle from concept to implementation and many more. Nanotechnology is recognized as a very strong
innovation driver and is therefore seen as a strategic technology for the world’s future economy. Nano-materials with their
exceptional multifunctional properties may transform the functioning of aviation (Defense) industry dramatically. Stealth
properties give it the unique ability to penetrate an enemy's most sophisticated defenses and threaten its most valued and
heavily defended targets. Stealth refers to the act of trying to hide or evade detection. It is not so much a technology as
a concept that incorporates a broad series of technologies and design features. Stealth does not always refer to radar.
Reducing an aircraft's heat signature is also important. This is usually done by channeling the engine exhaust through long
tubes and mixing it with cooler outside air. This paper shows the modern aviation design requirements like faster, miniature,
highly maneuverable, self-healing, intelligence guided, smart, eco-friendly, light weight warrant for materials with
extraordinary mechanical and multifunctional properties with stealth technology. Stealth technology is the use of special
radar absorbent materials, flat angular surface design and other techniques to minimize the amount of radiation r eflected to
a radar installation, causing an aircraft to appear as a much smaller signal or not at all. Stealth means 'low observable'.
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
STEALTH AND CAMOUFLAGE: TECHNIQUES AND MATERIALSSachin Kumbhar
Study & Seminar report on Stealth & Military Camouflage: Techniques & Materials. Discuss about stealth & camouflage techniques & materials including deception & decoys. A complete and comprehensive definition of stealth technology. all military equipment take into account low observable principles (L.O.) which has been discussed here.
MRPE works on the principle of magnetic repulsion and it's a fuel less engine so there is no combustion of fossil fuels. MRP engine is a modified version of reciprocating engine.
The prototype is an idea which uses the property of an electromagnet by virtue of which it changes the polarity of its poles whenever the direction of current is changed. This variation in polarity is utilized to attract or repel the permanent magnet attached to the piston. The usage of relay and timer will limit the output of the engine. By using an ECU in the engine instead, power can be obtained on each stroke which will result in an increased output.
Stealth refers to the act of trying to hide or evade detection. Stealth technology is
ever increasingly becoming a paramount tool in battle especially “high technology wars”
if one may occur in the future where invisibility will mean invincibility. Able to strike with
impunity, stealth aircraft, missiles and warships are virtually invisible to most types of
military sensors. The experience gained at the warfront emphasizes the need to
incorporate stealth features at the design stage itself. According to conventional military
wisdom, surprise is the best form of attack. With evermore sophisticated methods of
detection, however, catching the enemy unawares has becoming increasingly difficult.
Thus paving way to the development of increasingly sophisticated technologies that help
in evading the enemy's ever vigilant “eyes”.
“The future is bright, the future is stealth”
Stealth refers to the act of trying to hide or evade detection. Stealth technology is ever increasingly becoming a paramount tool in battle especially “high technology wars” if one may occur in the future where invincibility means invincibility. Able to strike with impunity, stealth aircraft, missiles and warships are virtually invisible to most types of military sensors. The experience gained at the warfront emphasizes the need to incorporate stealth features at the design stage itself. The other purpose is to share the recent achievements related to the advanced composite materials used on various aero structures across the globe. Also discussed are the possibilities of achieving stealth capability on our existing fleet of fighter and bomber aircrafts of our Indian Armed forces using composite and smart materials. Stealth technology also known as LOT (Low Observability Technology) is a technology which covers a range of techniques used with aircraft, ships and missiles, in order to make them less visible (ideally invisible) to radar, infrared and other detection methods.
Stealth Technology essentially deals with designs and materials engineered for the military purpose of avoiding detection by radar or any other electronic system. Stealth aircraft are aircraft that use stealth technology to make it harder to be detected by radar and other means than conventional aircraft by employing a combination of features to reduce visibility in the visual, audio, infrared and radio frequency (RF) spectrum. Well known examples include the United States' F-117 Nighthawk (1980-2008), the B-2 Spirit "Stealth Bomber," and the F-22 Raptor.
From many past years, Stealth Technology has became very effective approach for aircraft to hide it from radar system. Especially for military operations, "Low Observable" technology is best these days. These days all countries are using "Low Observable" principles and techniques for making their aircraft, also the many countries are upgrading their old generation aircraft by making modification to hide from radar system. However, Low observable means not completely invisible but complete disappearance from radar system. Stealth technology have many advantages but besides advantages it has also some disadvantages like its development cost, flyaway cost and maintenance cost are much higher than normal aircraft. Due to capabilities of Stealth technology many countries have been developing anti stealth technology 2 These days United States of America taking advantage of stealth technology. This paper will begin by a brief history of development of stealth aircraft and short introduction of most popular stealth fighter aircrafts 2 . Vimal Kumar Yadav | Pikesh Bansal | Shivam Sharma "A Review of Stealth Technology" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31142.pdf Paper Url :https://www.ijtsrd.com/engineering/mechanical-engineering/31142/a-review-of-stealth-technology/vimal-kumar-yadav
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online
International Journal of Engineering and Science Invention (IJESI) inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online
Island Air Defence: Challenges, Novel Surveillance Concepts and Advanced Rada...Ashwin Samales
By Yeo Siew Yam, Yeo Jiunn Wah and Henry Yip
The present-day air defence surveillance system is designed to detect threats originating from external airspace in a conventional military conflict, such as one involving multiple fast-flying fighters, helicopters and missiles. However, the operational environment has evolved to be far more challenging and complex over the past decade, with the emergence of stealthier targets that make better use of terrain to avoid detection. At the same time, there is always a desire to see further than the enemy and to obtain more information about the target. This paper aims to identify the inadequacies of the present-day air defence radar system and to propose some novel sensor solutions which include Ultra High Frequency/ Very High Frequency radar, bi-static/multi-static and passive radar, elevated sensors, High Frequency surface wave radar and non-cooperative target recognition techniques. The advantages, challenges and cost effectiveness of these advanced techniques will be analysed to develop a picture of future surveillance systems.
Stealth Technology essentially deals with designs and materials engineered for the military purpose of avoiding detection by radar or any other electronic system. The concept of stealth is not new. Being able to operate without the knowledge of the enemy has always been a goal of military technology and tactics. From the late years of World War II to today, stealth has been a major factor in the improvement of reconnaissance and attack aircraft. To achieve perfect stealth for an aircraft it should be stealthy in different ways, visual, acoustics, radar, infrared, etc.
The quest for an engine to increase mileage has started before many years. Many automobile
manufacturing industries are doing more research on how to increase mileage of vehicle. In today’s
automobile competition every manufacturer is focusing on weight reduction of vehicle by considering
this objective, this paper focuses on providing alternative material. The objective of the present work is
to optimize weight reduction to increase mileage of vehicle. Saving grams at different parts in a car
helps us in saving some kilograms at the end of the design. Also the main material like polyimide for
automobile component manufacturing can be the best alternative solution in all respect. The focus of
this paper is on weight reduction of master cylinder. For modeling and analysis PRO-E and ANSYS is
used. The results obtained are comparatively better than existing materials and polyimide can be the
alternative solution for automotive component.
This research paper presents the application of reverse engineering in medical field. Over last 15 years the production of preoperative planning model has increased dramatically and moreover. The use of this model will helpful for surgeon to reduce risk, time of operation and increase the patient confidence and life also. The first step in reverse engineering is CT scanning and digitization of data. The CT data obtained in DICOM format which is subjected to processing and imported in CAD program for further customization and STL formation . So in such cases it is necessary to evaluate the model whether it is manufactured accurately or not. As human body has irregular structure, so it is not possible to model & manufacture accurately such a critical shape like human bone, craniofacial implants etc. On completion of this paper it became apparent that certain RP technologies and associated software such as Mimics and 3-matic has indeed many advantages to offer the medical profession with regard to preoperative planning models and customized medical implants. Although not fully accepted by all, constant research and development in RP technology, biomaterials and software solutions, means that medical implant technology will continue to improve.
In this paper the result of dimensional & error analysis of Humerus customized implant manufactured by RP (FDM) has been discussed by using advance optical measurement technique.
In this research paper, we are focusing on automobile thief evidence giving and recovery of stolen vehicles. The main purpose of this paper is to introduce new system i.e. automatic thief evidence giving system in automobile. In this system we are using IR (Infrared) pair. Transmitter of IR pair is placed at driver’s seat and receiver is placed on speedometer in such a way that they will correspond to each other. Whenever person sits on driving seat and starts the car, power supply automatically will get to the circuit mounted inside the car and circuit gets started. As circuit is on, light emitted by transmitter will not be received by receiver mounted in circuit on speedometer, as the person is sitting on driving seat, therefore it creates barrier between transmitter and receiver. Now the generated signals go to circuit and camera will automatically turned on and starts to capture the three pictures in short span. This captured picture will send to the owner of the car in the form of MMS (Multimedia Messaging Service). Then owner receives MMS and decides the person driving the car is known personality or not. If not, then owner will report to the police with evidence of picture got via MMS. Therefore, it will be easy task for police department to find thief and stolen vehicles. So this system would be very helpful to the owner and police department too. Therefore, use of automatic thief identification system in automobile will increase the recovery of stolen vehicle.
STUDY OF THERMAL MAPPING FOR HEALTH MONITORING OF GAS TURBINE BLADEIJRISE Journal
Thermal mapping for health monitoring of gas turbine is essential as modern day gas turbine subjected to very
high temperature applications, gas turbines are used extensively for aircraft propulsion, land -based power
generation, and industrial applications. Developments in turbine cooling technology play a critical role in
increasing the thermal efficiency and power output of advanced gas turbines. Gas turbine blades are cooled
internally by passing the coolant through several rib-enhanced Some tine passages to remove heat conducted
from the outside surface. External cooling of turbine blades by film cooling is achieved by injecting relatively
cooler air from the internal coolant passages out of the blade surface in order to form a protective layer between
the blade surface and hot gas-path flow. For health monitoring of gas turbine blade, this presentation focuses on
the effect of critical zone and hot spot along temperature distribution by using thermal paint. The comp utational
flow and heat transfer results are also presented. This presentation includes unsteady high free -stream
turbulence effects on film cooling performance with a discussion of detailed heat transfer coefficient and filmcooling
effectiveness distributions for standard and shaped film-hole geometry using the newly developed
transient liquid crystal image method.
The Automobile industry is one of the most important heavy industries in the world. Countless companies rely
on the luxurious life and people around the world with the speed that can only be achieved by Automobile and which is
depending upon Petroleum. As petroleum product is decreasing day-by-day it is necessary to find an alternate fuel so
that luxuriousness can be continued. The success of the Automobile Industry depends on various factors ranging from
Fuel, less weight, Feasibility Low maintenance Eco-friendly and Comfort. Now a day there is a huge shortage of
petroleum products in the market due to its excess use. So in future there is a day to come when we will have the vehicles
but no fuels to run it. So this is a completely new idea to run a Car without any fuel. Moreover this will be the first car
which will give more than 90% efficiency. This idea is going to be a complete solution for the fuel crises and
environmental pollution in upcoming future. Even The idea used in this Car is also more efficient than the latest
technology of FUEL CELL being used in the modern cars. Since this Car can run with the help of two different types of
fuel hence its name hybrid fuel. This paper shows how the modern luxurious life with Automobile can be independent
from the petroleum Oil. This paper also deals with the technical feasibility of the use of Solar Energy with the help of
Battery as a fuels in Car. This paper reports the results of the theoretical characterization of different fuels with respect
to Hybrid fuel.
This paper deals with a new technology by which water can be used as a fuel. Price of Petroleum oils
are increases day-by-day, affecting the lifestyle of common people as well as the national economy. Hence it is
necessary to have alternative for petroleum oil. Water can be used as a fuel in the form of Brown’s Gas, so we
have a plan to produce a Generator which works on Brown’s Gas which is obtained by the electrolysis of water. It
will be a unique type of Generator so it has huge market potential. Now–a-days every country spends a lot of
money on research and development on non-conventional energy resources. In world, the conventional energy
sources are limited and their consumption is very high, so alternative sources of energy have tremendous
potential in future. Nobody will think for a moment but it is reality that water can be used as electricity producing
agent, and hence as an energy resources. It is good news for environmentalists as It is made from water,
depending upon the set-up; it burns into combustion engine and releases oxygen into atmosphere. This method
increases the oxygen content in the atmosphere, which helps to solve environment degradation. Hence, this new
successful technology can be called as Green technology. Since Electricity is one of the important energy
resources. It is available at very limited places and consumption is much more. This causes war for electricity
which is not new for civilization but by this technology war can be overcome or may be ended soo n
Antibiotics and similar drugs, together called antimicrobial agents, have been used for the last many years to treat patients who have infectious diseases. The treatment of bacterial infections is increasingly complicated because microorganisms can develop resistance to antimicrobial agents, since the first usage of antimicrobials, the resistance among bacteria has progressively increased and has accelerated within the last 10 years. This is largely due to the increasing presence of pathogenic microorganisms with resistance to previous antibiotic agents, resulting in the administration of improper treatment, not only in humans but also in companion and food animals and the environment which has caused the rise in antibiotic resistance. Although efforts are being made in all the areas, there is an urgent need to increase the effectiveness of these interventions or some bacterial infections will become difficult if not impossible to treat reliably.
HOME AUTOMATION SYSTEM VIA INTERNET USING ANDROID PHONE IJRISE Journal
This paper presents a low cost, flexible and standalone home devices control and monitoring system using an embedded arduino micro-web server, with real IP connectivity for accessing and controlling devices and appliances remotely using Android based Smart phone app running on android platform. The proposed system does not require a dedicated server PC with respect to similar systems and offers a novel communication protocol to monitor and control the home environment. Devices such as light switches, temperature sensors, humidity sensors, current sensors, smoke/gas sensors and sirens have been integrated in the system to demonstrate the feasibility and effectiveness of the proposed smart home system.
Technological endeavours of the 21st century have made available the spread of mobile learning using BYOD (Bring Your Own Device) dynamic learning environment to enhance interactive learning. Mobile learning platform called Fishtree, is a website that enables teachers, tutors and parents to create a lesson plan with a few clicks, and provide learners the opportunity to have a personalized learning environment.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
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1. International Journal of Research In Science & Engineering e-ISSN: 2394-8299
Volume: 1 Issue: 2 p-ISSN: 2394-8280
IJRISE| www.ijrise.org|editor@ijrise.org [07-12]
6th
GENERATION STEALTH AIRCRAFT
INDRADEEP KUMAR
Aeronautical Engineering 3rd
year
MATS School of Engineering and IT, MATS University, Raipur
indradeep1989@gmail.com
Stealth aircrafts are aircraft that use stealth technology to avoid detection by employing a combination of
features to interfere with radar as well as reduce visibility in the infrared visual, audio, and radio frequency (RF)
spectrum. While no aircraft is totally invisible to radar, stealth aircraft prevent conventional radar from detecting
or tracking the aircraft effectively, reducing the odds of a successful attack. Stealth is the combination of passive
low observable (LO) features and active emitters such as Low Probability of Intercept Radars, radios and laser
designators. These are usually combined with active defenses such as chaff, flares, and ECM. Stealth refers to
the act of trying to hide or evade detection, For airplanes, stealth first meant hiding from radar. It is not so much
a technology as a concept that incorporates a broad series of technologies and design features. This paper shows
the development of stealthy airplanes which teaches several important lessons about technology. The first is that
often many different technologies like Nano-Technology with Aerodynamics must be combined to achieve a
desired outcome. An advance in one field, such as materials or aerodynamics, must be accompanied by advances
in other fields, such as computing, constructing or electromagnetic theory. The second lesson is that sometimes
trial and error techniques are insufficient and advances in mathematical theory are necessary in order to achieve
significant advances. Finally, stealth teaches the lesson that technology is never static - a "stealth breakthrough"
may only last for a few years before an adversary finds a means of countering it. So this paper deals with how to
handle the Stealth. This paper also shows how and where to use Nano-Technology.
KEYWORDS: Nano-Technology, Stealth, RADAR, Visual Stealth, Infrared Stealth, Acoustic Stealth, Plasma
Stealth etc.
INTRODUCTION
Stealth technology is a sub-discipline of military countermeasures which covers a range of techniques used with
aircraft, ships and missiles, in order to make them less visible (ideally invisible) to radar, infrared and other
detection methods. Stealth technology (often referred to as "LO", for "low observability") is not a single technology
but is a combination of technologies that attempt to greatly reduce the distances at which a vehicle can be detected.
The concept of stealth is not new: being able to operate without the knowledge of the enemy has always been a goal
of military technology and techniques. However, as the potency of detection and interception technologies (radar,
IRST, surface-to-air missiles etc.) has increased, so too has the extent to which the design and operation of military
vehicles have been affected in response. A 'stealth' vehicle will generally have been designed fromthe outset to have
reduced or controlled signature. It is possible to have varying degrees of stealth. The exact level and nature of stealth
embodied in a particular design is determined by the prediction of likely threat capabilities and the balance of other
considerations, including the raw unit cost of the system.
A mission system employing stealth may well become detected at some point within a given mission, such as when
the target is destroyed, however correct use of stealth systems should seek to minimize the possibility of detection.
Attacking with surprise gives the attacker more time to perform its mission and exit before the defending force can
counter-attack. If a surface-to-air missile battery defending a target observes a bomb falling and surmises that there
must be a stealth aircraft in the vicinity, for example, it is still unable to respond if it cannot get a lock on the aircraft
in order to feed guidance information to its missiles.
DEFINITION
Stealth technology is the use of special radar absorbent materials, flat angular surface design and other techniques to
minimize the amount of radiation reflected to a radar installation, causing an aircraft or other vehicle to appear as a
much smaller signal or not at all.
HISTORY
2. International Journal of Research In Science & Engineering e-ISSN: 2394-8299
Volume: 1 Issue: 2 p-ISSN: 2394-8280
IJRISE| www.ijrise.org|editor@ijrise.org [07-12]
Development of stealth technology for aircraft began before World War I. Because RADAR had not been invented,
visibility was the sole concern, and the goal was to create aircraft that were hard to see. In 1912, German designers
produced a largely transparent monoplane; its wings and fuselage were covered by a transparent material derived
from cellulose, rather than the opaque canvas standard in that era. Interior struts and other parts were painted with
light colors to further reduce visibility. The plane was effectively invisible from the ground when flow at 900 ft (274
m) or higher, and faintly visible at lower altitudes. Several transparent German aircraft saw combat during World
War I, and Soviet aircraft designers attempted the design of transparent aircraft in the 1930s.
With the invention of RADAR during World War II, stealth became both more needful and more feasible: more
needful because RADAR was highly effective at detecting aircraft, and would soon be adapted to guiding
antiaircraft missiles and gunnery at them, yet more feasible because to be RADAR-stealthy an aircraft did need to be
not be completely transparent to radio waves; it could absorb or deflect them.
.AIM OF STELTH TECHNOLOGY
The idea is for the radar antenna to send out a burst of radio energy, which is then reflected back by any object it
happens to encounter. The radar antenna measures the time it takes for the reflection to arrive, and with that
information can tell how far away the object is. The metal body of an airplane is very good at reflecting radar
signals, and this makes it easy to find and track airplanes with radar equipment. The goal of stealth technology is to
make an airplane invisible to radar. There are two different ways to create invisibility: The airplane can be shaped so
that any radar signals it reflects are reflected away from the radar equipment. The airplane can be covered in
materials that absorb radar signals. The goal of stealth techniques is to bounce so little radar power back to its source
that the target is nearly impossible to detect or track.
DETECTION TECHNIQUES
Following are the techniques of detection for aircraft
RADAR
Heat detection
Turbulence detection
Visual detection
Radar is a system that allows the location, speed, and/or direction of a vehicle to be tracked. The word "radar" is
actually an acronym standing for Radio Detection And Ranging since the device uses radio waves to detect targets.
Radar works by sending out pulses of these electromagnetic waves and then "listening" for echoes bounced back by
targets of interest. Even though a radar may transmit megawatts of power in a single pulse, only a tiny fraction of
that energy is typically bounced back to be received by the radar antenna. The amount of power returned from a
target to the transmitting radar depends on four major factors:
1. The power transmitted in the direction of the target
2. The amount of power that impacts the target and is reflected back in the direction of the radar
3. The amount of reflected power that is intercepted by the radar antenna
4. The length of time in which the radar is pointed at the target.
STEALTH TECHNIQUES
Stealth Technology is used in the construction of mobile military systems such as aircrafts and ships to significantly
reduce their detection by enemy, primarily by an enemy RADAR. The way most airplane identification works is by
constantly bombarding airspace with a RADAR signal. Other methods focus on measuring acoustic (sound)
disturbances, visual contact, and infrared (heat) signatures. Stealth technologies work by reducing or eliminating
these telltale signals. Panels on planes are angled so that radar is scattered and no signal returns . Planes are also
covered in a layer of absorbent materials that reduce any other signature the plane might leave. Shape also has a lot
to do with the `invisibility' of stealth planes. Extreme aerodynamics keeps air turbulence to a minimum and cut
3. International Journal of Research In Science & Engineering e-ISSN: 2394-8299
Volume: 1 Issue: 2 p-ISSN: 2394-8280
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down on flying noise. Special low-noise engines are contained inside the body of the plane. Hot fumes are then
capable of being mixed with cool air before leaving the plane. This fools heat sensors on the ground. This also keeps
heat seeking missiles from getting any sort of a lock on their targets.
1. VISUAL STEALTH
Low visibility is desirable for all military aircraft and is essential for stealth aircraft. It is achieved by coloring the
aircraft so that it tends to blend in with its environment.
2. INFRARED STEALTH
Infrared radiation (i.e., electromagnetic waves in the. 72–1000 micron range of the spectrum) are emitted by all
matter above absolute zero; hot materials, such as engine exhaust gases or wing surfaces heated by friction with the
air, emit more infrared radiation than cooler materials. Heat-seeking missiles and other weapons zero in on the
infrared glow of hot aircraft parts.
3 ACOUSTIC STEALTH
Although sound moves too slowly to be an effective locating signal for antiaircraft weapons, for low-altitude flying
it is still best to be inaudible to ground observers.
4 PLASMA STEALTH
Plasma absorbs radio waves, so it is theoretically possible to diminish the RADAR reflectivity of an aircraft
otherwise non-stealthy aircraft by a factor of 100 or more by generating plasma at the nose and leading edges of an
aircraft and allowing it flow backward over the fuselage and wings.
COUNTER STEALTH TECHNIQUE
An aircraft cannot be made truly invisible. For example, no matter how cool the exhaust vents of an aircraft are kept,
the same amount of heat is always liberated by burning a given amount of fuel, and this heat must be left behind the
aircraft as a trail of warm air. Infrared-detecting devices might be devised that could image this heat trail as it
formed, tracking a stealth aircraft.
No single receiver may record a strong or steady echo fromany single transmitter, but the network as a whole might
collect enough information to track a stealth target. Anti-Stealth/ counter stealth can be achieved:
1. By triangulating its location with a network of radar systems.
2. With the help of microwaves similar to the ones emitted by the cell phone towers.
3. By using over the horizon radar, ultra wide band (impulse) radar, bi-static radar, imaging radar and IR imaging
seekers.
DRAWBACK OF STEALTH TECHNOLOGY
Stealth technology has its own drawback like other technologies.
1. Stealth aircraft cannot fly as fast or is not maneuverable like conventional aircraft.
2. Another serious drawback with the stealth aircraft is the reduced amount of payload it can carry. As most of the
payload is carried internally in a stealth aircraft to reduce the radar signature, weapons can only occupy a less
amount of space internally. On the other hand a conventional aircraft can carry much more payload than any
stealth aircraft of its class.
3. Since the radar cross-section of an aircraft depends on the angle from which it is viewed, an aircraft will
typically have a much smaller RCS when viewed from the front or rear than when viewed from the side or from
above. In general stealth aircraft are designed to minimize their frontal RCS. But it is not possible to contour the
surface of an aircraft to reduce the RCS equally in all directions, and reductions in the frontal RCS may lead to
a larger RCS from above.
4. International Journal of Research In Science & Engineering e-ISSN: 2394-8299
Volume: 1 Issue: 2 p-ISSN: 2394-8280
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Fig: All the three view of the Aircraft.
4. Another drawback of stealth aircraft is their vulnerability to detection by bi-static radars.
HOW TO OVERCOME OR ELIMINATE THE DRABACK OF STEALTH TECHNOLOGY.
The drawback of this technology can be overcome by the following methods:
1.Aircrat designed primarily to supplement and replace by incorporating new stealth features and propulsion
technology.These advances include its angular design, use of radar-absorbent composite materials, and the ability to
"super cruise" at supersonic speeds without using an afterburner. The Aircraft also emphasizes agility through the
use of thrust vectoring nozzles and a sophisticated fly-by-wire control system.
2. Other advanced systems aboard the Raptor include an integrated avionics suite built around a powerful flight
computer with three times the memory and 16 times the speed can be used and also uses a navy/attack systemthat
incorporates artificial intelligence to filter information to the pilot reducing his workload as well as improving his
situational awareness.
3. The Aircraft can be advanced by incorporating Nano-materials rather than other materials which increases the
strength and reduces the weight hence it can carry more pay load.
4. The contouring of a stealth aircraft is so designed to avoid reflecting a radar signal directly back in the direction
of the radar transmitter from both side of bi-static radars.
WHY IT'S NAME 6TH
GENERATION
Till date the technology used in Aircraft named as 5th
generation Stealth Aircraft while nano- Technology is
used in Aircraft which is of next generation hence its name 6th
generation.
WHERE AND HOW TO USE NANO-TECHNOLOGY
For an aircraft generally Nano-materials are formed by Gas Phase synthesis process as follows:
1. In homogeneous Chemical Vapor Deposition (CVD), particles form in the gas phase and diffuse towards a cold
surface due to Thermo-phoretic forces, and can either be scrapped of from the cold surface to give Nano-
powders, or deposited onto a substrate to yield what is called ‘particulate films’.
2. In heterogeneous CVD, the solid is formed on the substrate surface, which catalyzes the reaction and a dense
film is formed.
5. International Journal of Research In Science & Engineering e-ISSN: 2394-8299
Volume: 1 Issue: 2 p-ISSN: 2394-8280
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In order to form Nano-materials several modified CVD methods have been developed. Gas phase processes have
inherent advantages, some of which are noted here:
1. An excellent control of size, shape, crystallinity and chemical composition
2. Highly pure materials can be obtained
3. Multi-component systems are relatively easy to form and Easy control of the reaction mechanisms.
Uses of Nano-materials in Stealth Aircrafts are as follows:
1. NANO-MATERIALS IN AIRFRAME STRUCTURE
Carbon Nano-tube (CNT) based Polymer Composites having wide range of Young’s Modulus, High
Specific Strength, Crash Resistance and Thermal Performance and these properties can provide conventional
composites and light weight metals.
Nano-clays reinforced Polymer Composites having Thermal and Flame Retardant properties.
Metal Nano-particles incorporated Composites: The extra ordinary electrostatic discharge and electro-
magnetic interference (EMI) shielding properties of these composites make themthe probable futuristic solution
for making the structure which is resistant to lightning strikes.
2. NANO-COATINGS FOR AERO-ENGINE PARTS
SiC Nano-particles in SiC-particle-reinforced alumina Yittria stabilized Nano-zirconia can facilitate crack
healing, resulting in improved high-temperature, and strength and creep resistance as compared to monolithic
ceramics.
TiN Nano-crystallites embedded in amorphous Si3N4 are used for Wear-resistant coatings.
The Nano-composite coatings made of crystalline Carbide, Diamond like Carbide and metal di-
Chalcogenide, TiN are used for low friction and wear resistant applications of aircraft.
Nanotube and nanoparticles (Nano-graphite, Nano-Aluminium) containing polymer coating are used for
electrostatic discharge, EMI shielding and low Friction applications of aircraft surfaces .
3. NANO-MATERIALS FOR AIRCRAFT ELECTRO-COMMUNICATION COMPONENTS
Magnetic Nano-particles (Iron oxide Nano-particles i.e. Fe2O3 & Fe3O4) incorporated polymer films and
composites can be used in various Data Storage Media.
Ceramic Nano-particles like Barium Titanate, Barium Strontium Titanate are used for making Super
Capacitors.
MEMS (Micro Electro Mechanical Systems) and NEMS (Nano Electro Mechanical Systems) offer the
possibility of developing a standard fuel management unit which controls the fuel control in aero-engines.
CONCLUSION
Stealth has become the magic word in contemporary weapon systems. Contemporary work on stealth has its roots in
long-standing efforts to reduce the visibility of military aircraft through camouflage paint schemes. However, as
electronic sensors have replaced the eyes of pilots as the primary means of tracking other aircraft, more intricate
means of defense were needed. This paper also concluded that potential of Nano-materials with Stealth Technology
in Aviation (Defense) Sector. Using Nano-technology with Stealth Technology in aviation gives the Low
Observability with Light Weight, High Strength, High Toughness, Corrosion Resistance, Less Maintenance &
Durability with increase in carrying Pay load hence it becomes cheaper, safer and used for protecting to be the target
than the conventional. These technology has some drawback also but due to above reason it can be ignored.
AKNOWLEDGEMENTS
6. International Journal of Research In Science & Engineering e-ISSN: 2394-8299
Volume: 1 Issue: 2 p-ISSN: 2394-8280
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I would like to thanks Late M. Nirmala (Administrator Ganesh Institute of Engineering, Chennai), E. Natarajan
(Professor Mechanical Engineering, Anna University, Chennai) Mr. Dilip Kumar and Mr. Pradeep Kumar (Brother)
for their full support for making this paper.
REFRENCES
www.aerospaceweb.org
www.howstuffworks.com
www.wikipedia.com
www.totalairdominance.com
EPA Nanotechnology White Paper
http://www.nanostudent.com
http://www.nnin.org/nnin_edu.html