The document discusses the concept of a space elevator, which would consist of a long cable attached at one end to the Earth's surface and extending into space, held in place by centrifugal force. It would allow easier access to space by transporting payloads along the cable. The key components would be anchors on Earth, a ribbon cable made of carbon nanotubes, climbers to transport payloads, and a counterweight in space. The space elevator could provide low-cost access to space and enable greater exploration and utilization of space. While technical challenges remain such as damage from space debris, the concept may become feasible in the coming decades with advancements in materials science.
Space transportation system .
The space elevator was first proposed in the 1960’s as a method of getting into space. The initial studies of a space elevator outlined the basic concept of a cable strung between Earth and space but concluded that no materials available at the time had the required properties to feasibly construct such a cable. With the discovery of carbon nano tubes in 1991 it is now possible to realistically discuss the construction of a space elevator. Although currently produced only in small quantities, carbon nano tubes appear to have the strength to mass ratio required for this effort. However, fabrication of the cable required is only one of the challenges in construction of a space elevator. Powering the climbers, surviving micro meteor impacts, lightning strikes and low-Earth-orbit debris collisions are some of the problems that are now as important to consider as the production of the carbon nanotube cable. We consider various aspects of a space elevator and find each of the problems that these efforts will encounter can be solved with current or near-future technology.
Seminar PPT on the topic Space Elevator with details on the Journals used for study.
Content:
>Concept
>Why built it
>Component study
>Major hurdles
>Bibliography
Space elevators are incredibly tall theoretical structures that connects the earths surface and outer space, beyond the geosynchronous orbit (35,800 km). The structure acts as a continuous and viable channel by which payload can be send in to space.
The slides give a glimpse of the new upcoming technology that is ready to change the definition of space travel. More economically efficient and less risky approach that does not put space travellers life at stake........
This paper gives description about fuel used for various spacecraft.Spacecraft propulsion is based on jet propulsion as used by rocket motors. Propulsion in a broad sense is the act of changing the motion of a body. Propulsion mechanisms provide a force that moves bodies that are initially at rest, changes a velocity, or overcomes retarding forces when a body is propelled through a medium. Jet propulsion is a means of locomotion whereby a reaction force is imparted to a device by the momentum of ejected matter. The burning rate of the solid rocket propellants is one of the most important factors that determine the performance of the rocket. The burning rate of rocket motors running with solid propellant is called flame regression, which occurs with the ignition in the fuel grain perpendicular to the burning surface. This study investigates the effects of the addition of metal-based high-energy matter (Aluminium) into the content of the propellant produced within the scope of development project. The study starts with the manufacture of propellant samples.
Space transportation system .
The space elevator was first proposed in the 1960’s as a method of getting into space. The initial studies of a space elevator outlined the basic concept of a cable strung between Earth and space but concluded that no materials available at the time had the required properties to feasibly construct such a cable. With the discovery of carbon nano tubes in 1991 it is now possible to realistically discuss the construction of a space elevator. Although currently produced only in small quantities, carbon nano tubes appear to have the strength to mass ratio required for this effort. However, fabrication of the cable required is only one of the challenges in construction of a space elevator. Powering the climbers, surviving micro meteor impacts, lightning strikes and low-Earth-orbit debris collisions are some of the problems that are now as important to consider as the production of the carbon nanotube cable. We consider various aspects of a space elevator and find each of the problems that these efforts will encounter can be solved with current or near-future technology.
Seminar PPT on the topic Space Elevator with details on the Journals used for study.
Content:
>Concept
>Why built it
>Component study
>Major hurdles
>Bibliography
Space elevators are incredibly tall theoretical structures that connects the earths surface and outer space, beyond the geosynchronous orbit (35,800 km). The structure acts as a continuous and viable channel by which payload can be send in to space.
The slides give a glimpse of the new upcoming technology that is ready to change the definition of space travel. More economically efficient and less risky approach that does not put space travellers life at stake........
This paper gives description about fuel used for various spacecraft.Spacecraft propulsion is based on jet propulsion as used by rocket motors. Propulsion in a broad sense is the act of changing the motion of a body. Propulsion mechanisms provide a force that moves bodies that are initially at rest, changes a velocity, or overcomes retarding forces when a body is propelled through a medium. Jet propulsion is a means of locomotion whereby a reaction force is imparted to a device by the momentum of ejected matter. The burning rate of the solid rocket propellants is one of the most important factors that determine the performance of the rocket. The burning rate of rocket motors running with solid propellant is called flame regression, which occurs with the ignition in the fuel grain perpendicular to the burning surface. This study investigates the effects of the addition of metal-based high-energy matter (Aluminium) into the content of the propellant produced within the scope of development project. The study starts with the manufacture of propellant samples.
Electric Propulsion (EP) is a class of space propulsion which makes use of electrical power to accelerate a propellant by different possible electrical and/or magnetic means. The use of electrical power enhances the propulsive performances of the EP thrusters compared with conventional chemical thrusters. Unlike chemical systems, electric propulsion requires very little mass to accelerate a spacecraft. The propellant is ejected up to twenty times faster than from a classical chemical thruster and therefore the overall system is many times more mass efficient.
Electric Propulsion, when compared with chemical propulsion, is not limited in energy, but is only limited by the available electrical power on-board the spacecraft. Therefore EP is suitable for low- thrust (micro and milli-newton levels) long-duration applications on board spacecrafts. The propellant used in EP systems varies with the type of thruster and can be a rare gas (i.e. xenon or argon), a liquid metal or, in some cases, a conventional propellant.
Electric Propulsion System components
An Electric Propulsion System is composed by four different building blocks:
The thruster components,
The propellant components or fluidic management system, The power components, which includes the PPU,
The pointing mechanisms (optional).
Hyperloop is the new mode of transportation after air, water, rails and roads. It could be a realistic high speed as well as economical way of transportation apart from a fantasized means of transportation called the "teleportation".
This ppt will explain about the new mode of transportation, i.e., Hyperloop which was proposed by ELON MUSK. It will feature its design, concept, working model, need, advantages and disadvantages.
Hyperloop transportation system developed by Elon musk of Tesla group and spacex. It aims to reduce travel time between two cities with the help of capsules travelling in a controlled vaccum system .
This seminar gives idea about spacecraft propulsion i.e., actually what are different latest modes of propulsion are used in space agency and also the introduction of combustion of propellants.
Electric Propulsion (EP) is a class of space propulsion which makes use of electrical power to accelerate a propellant by different possible electrical and/or magnetic means. The use of electrical power enhances the propulsive performances of the EP thrusters compared with conventional chemical thrusters. Unlike chemical systems, electric propulsion requires very little mass to accelerate a spacecraft. The propellant is ejected up to twenty times faster than from a classical chemical thruster and therefore the overall system is many times more mass efficient.
Electric Propulsion, when compared with chemical propulsion, is not limited in energy, but is only limited by the available electrical power on-board the spacecraft. Therefore EP is suitable for low- thrust (micro and milli-newton levels) long-duration applications on board spacecrafts. The propellant used in EP systems varies with the type of thruster and can be a rare gas (i.e. xenon or argon), a liquid metal or, in some cases, a conventional propellant.
Electric Propulsion System components
An Electric Propulsion System is composed by four different building blocks:
The thruster components,
The propellant components or fluidic management system, The power components, which includes the PPU,
The pointing mechanisms (optional).
Hyperloop is the new mode of transportation after air, water, rails and roads. It could be a realistic high speed as well as economical way of transportation apart from a fantasized means of transportation called the "teleportation".
This ppt will explain about the new mode of transportation, i.e., Hyperloop which was proposed by ELON MUSK. It will feature its design, concept, working model, need, advantages and disadvantages.
Hyperloop transportation system developed by Elon musk of Tesla group and spacex. It aims to reduce travel time between two cities with the help of capsules travelling in a controlled vaccum system .
This seminar gives idea about spacecraft propulsion i.e., actually what are different latest modes of propulsion are used in space agency and also the introduction of combustion of propellants.
Long duration, lighter than air, stratospheric airships might offer a unique and compelling platform for a wide range of Earth science and astrophysics. There is also great commercial opportunity in stratospheric, stationary platforms that can remain aloft for months or even years at a time. A 2013 Keck Institute for Space Studies (KISS) series of workshops (http://kiss.caltech.edu/programs.html#airships) brought together a number of scientists and aerospace industry professionals to discuss this potential. The report from that study (http://kiss.caltech.edu/papers/airships/papers/airships.pdf) identified the need for a graduated approach to developing the necessary technology and recommended a funded challenge as one way to meet this need. The NASA Centennial Challenge office funded development of the Airships-20-20-20 Challenge, but NASA ultimately decided not to pursue the Challenge. I will describe the science enabled by airships and the proposed Challenge.
People are more attracted towards smart technology and fantasy. Here fantasy things are practically
made true with the help of science and smart technology .Hover board is similar to skate board but deviation
is, it rely on super-strong magnets and electromagnetic levitation to stay aloft . The term levitation refers to
a class of technology that uses electromagnetic levitation to propel vehicles with electromagnets rather than
with wheels axels and bearings. Hover board can be considered as solution for future needs of the world.
There are three types of hover board which we are discussed in this paper based on improvements and
compatibility.This paper gives an idea about self levitating boards and how they actually works.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
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Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
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Condensation of vapors in flue gas is a complicated
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heat and mass transfer processes. A computer program for
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condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
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predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
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Design and Analysis of Algorithms-DP,Backtracking,Graphs,B&B
Space Elevator-The Final Frontier
1. SPACE ELEVATOR : THE FINAL
FRONTIER
Presented By :
AMIYA KUMAR SAMAL
MECHANICAL ENGINEERING
PARALA MAHARAJA ENGINEERING COLLEGE Guided By :
8TH SEMESTAR Mr. B.D. Rao (Asst. Professor)
1301109115
2. CONTENTS :
HISTORY
INTRODUCTION
WHAT IS SPACE ELEVATOR????
COMPONENTS
WORKING PRINCIPLE
WHY WE GO FOR SPACE ELEVATOR
TECHNICAL BUDGET
CHALLENGES & SOLUTIONS
ADAVANTAGES
DISVANTAGES
FUTURE SCOPE
APPLICATION
CONCLUSION
3. HISTORY :
The key concept of the space elevator appeared in 1895 when
Russian scientist Konstantin Tsiolkovsky was inspired by the Eiffel Tower in Paris.
NASA holds first workshop on space elevators after the discovery Of carbon nano
tubes in 1999.
Further Research have been carried out to make it a successful project.
Obayashi Corporation announced that by 2050 it could build a space elevator using
carbon nanotube technology in the beginning of 2015.
4. A New Space Transportation system being
developed that could make travel to
geostationary earth orbit and
transform the global economy and bring the new
thinking / idea.
It’s a fiction that could become reality in the
near future.
Its height may be around 62000
mile ( 100000 km ).
5. WHAT IS SPACE ELEVATOR??
Cable attached to the Earth near the equator which extends directly
into space and is attached to a small counterweight revolving in
orbit .
Stays in position because the gravitational force is equal to the
centrifugal force.
Space elevators are incredibly tall structures that stretch beyond the earth’s
atmosphere to transport satellites and shuttles into outer space with
out much cost and environmental impact of rocket fueled launcher
consisting of a 1,00,000 Km long cable.
The earthbound end would be attached to a floating platform
in the middle of an ocean , while the other end would be fixed
to an orbiting object.
6. COMPONENTS :
I. ANCHORS/BASE STATIONS
II. RIBBON/CABLES /TEHTERS
III. CLIMBERS/ELEVATOR CAR
IV. POWER SOURCE
V. COUNTERWEIGHTS
8. I . ANCHOR :
The base stations are classified in two categories :
Stationary and Mobile Base Station.
Mobile stations are typically large oceangoing vessels.
Stationary stations are located on high altitudes such
as on the top of mountains or on high towers etc.
Anchor station is a mobile, ocean-going platform
identical to ones used in oil drilling.
Weather and mobility are primary factors.
9. II . RIBBON :
The cable made of a material with a large tensile strength/density
Ribbon is long cable of light ,flexible , Ultra Strong Metal which
provides grip for climber
Ribbon means tether cable which holds two components i.e. anchor
And counter weight.
It is made of carbon nano tubes in a composite matrix that would
be wound into a spool so that it would be launched into orbit.
10. RIBBON CONSTRUCTION :
Initial production takes place on earth.
The cable is a carbon nanotube/epoxy composite.
Aligned nanotubes are epoxied into sheets, which are then combined (reinforced).
Climbers have a similar system on-board to build tether.
The ribbon can be produced in small length bundles and then connected along.
Nanotubes must be defect free and straight
The length of the finished cable is 91,000km, and nanotubes are cm in length.
Nanotubes are grown aligned, and defects can be controlled in current production
methods .
11.
12. III . CLIMBERS :
Used as launch vehicle.
Payloads from 20,000- 1,000,000 kg.
Velocity up to 200km/hr.
These are mainly the robotic lifter
which uses the ribbon to move in
the space.
Traction tread rollers on the lifter
would clamp on to the ribbon and
pull the ribbon through, enabling the elevator to climb up the lifter .
Climbers powered by electron laser & photovoltaic cells, with power requirements
of 1.4-120MW.
13. These are just a source of energy and power for
the climber.
The energy can be transferred to the climber
through various methods .
Transfer the energy to the climber through
wireless energy transfer while it is climbing.
Transfer the energy to the climber through some
material structure while it is climbing.
Store the energy in the climber before it starts – requires an extremely
high specific energy such as nuclear energy.
Solar power – power compared to the weight of panels limits the speed of climb
Electron lasers can be used to deliver power
14. V . COUNTER WEIGHT :
Two dominant methods have been proposed.
One is a heavy object like space station.
And another is expanding cable itself well past geosynchronous orbit.
These are used to balance the upward and downward gravity to centrifugal force.
17. TECHNICAL BUDGET :
COMPONENT COST ESTIMATE (US$)
1) Launch costs to GEO 1.0B
2) Ribbon production 400M
3) Climbers 370M
4) Power beaming stations 1.5B
5) Anchor station 600M
6) Tracking facility 500M
7) Other 430M
8) Contingency (30%) 1.6B
TOTAL ~6.9B
18. CHALLENGES AND SOLUTIONS :
Low earth orbit objects could potentially damage or cut the cable that the space
elevator is using.
Induced current : in mill watt not a problem
Radiation : Carbon Nano tube can sustain till 1000 years on earth
Lightning, wind, clouds: Avoid through proper anchor location selection.
Environmental Impact : Ionosphere dissipating ; so not an iussue
political impact of creating a space elevator(If the space elevator’s anchor station
is situated in international waters.
19. Low operations costs - US$250/kg to LEO, GEO, Moon, Mars, Venus or the
asteroid belt
No launch vibrations
Safe access to space - no explosive propellants or dangerous launch or re-entry
forces
Easily expandable to large systems or multiple systems
Easily implemented at many solar system locations
Energy efficient compared to the use of rockets.
Decrease in the annual usage of energy.
Jobs are created from the construction and maintenance
No payload envelope restrictions
Reduce the costs of telecommunication.
20. DISADVANTAGES :
A space elevator may cause a navigational hazard both to aircraft and
spacecraft.
Impacts made by the meteoroids and micrometeorites pose a more difficult
problem to the space elevator.
21. FUTURE SCOPE :
Engineering development centers in the U.S., Spain and Netherlands are under
development.
Material development efforts are underway by private industry.
Japanese construction firm, Obayashi Corp., announced on Sep 26, 2014 that
they’ll have a space elevator operational in the next 35 years
By the year 2050, you may not need a rocket to reach the Moon, just an elevator.
22. APPLICATION :
Solar Power Satellite :
Economical and clean power source use on Earth
Solar System Exploration :
Colonization and full development of earth ,mars , moon orbit
Telecommunications :
Enables extremely high performance systems
23. The space elevator is a revolutionary Earth-to-space transportation system
that will enable space exploration
Design, deployment and operational scenarios for the first space elevator
have been put together. Potential challenges have been laid out and solutions
developed.
Development of the space elevator requires an investment in materials and
engineering but is achievable in the near future with a reasonable investment
and development plan.