Laser security system
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This document discusses a laser security system using a light dependent resistor (LDR). It notes that LDR resistance changes based on light intensity according to a formula involving constants. The laser security system provides high efficiency, fast response, durability, and cost efficiency. It can detect objects and provide notification and heating effects. The system is useful for high security locations like hospitals, buildings, and institutions. The document cites several references on related topics like the 555 timer microchip and laser beams/resonators.
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This is all about the whole system which is capable the count the entry of threats to a particular secured area.
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1) WAMRS allows for non-intrusive and wireless collection of electricity consumption data from customer premises via a premises unit that transmits to central points and a billing office server.
2) The premises unit utilizes a digital meter, microcontroller, wireless transmitter chip, and memory to periodically transmit consumption data.
3) Central points receive data from premises units and retransmit over longer distances to the billing office server and database.
4) The system authenticates devices and transmissions using a three-way handshake protocol and random number table for security.
Diamond security system in museum with 60Db siren
This document describes a mini project report for a diamond security system in a museum with a 60dB siren. The project uses light dependent resistors (LDRs) to detect when a diamond is picked up, triggering a transistor switch connected to the siren to sound an alarm. The system is powered by a 5V, 750mA regulated power supply. When light falls on the LDR under the diamond, it triggers the silicon controlled rectifier connected to the loud 60dB siren. Only authorized personnel with a unique key can activate or deactivate the alarm system.
Anti gravity
The document discusses anti-gravity, which refers to creating objects free from the force of gravity. It notes that while anti-gravity is common in science fiction, general relativity suggests it is impossible except under contrived circumstances. One proposed method for producing anti-gravity involves using negative mass, where a negative mass object would fall towards normal matter due to repulsive gravitational forces.
Automatic theft controller system using burglar alram
The document discusses burglar alarm systems and their components. It explains that burglar alarms consist of sensors to detect intruders, a control panel to power the sensors and provide alerts, and connections between these components. Some common sensor types mentioned are door and window contacts, motion detectors, light dependent resistors, and magnetic contacts. The control panel monitors the sensor circuits and sounds an alarm until someone enters a security code at the keypad. The control panel is usually hidden away for added security so intruders cannot disable it.
Catalogo digital unidad 9 aaron velasquez
El documento resume el arte pop y algunos de sus principales exponentes como Richard Hamilton, Roy Lichtenstein, Tom Wesselmann y Andy Warhol. También cubre el Op Art, hiperrealismo, abstraccionismo y diseños venezolanos contemporáneos, con ejemplos de obras de artistas como Vasarely, Kandinsky y Jesús Emilio Franco.
Micro turbine
Pro Engineer (Pro/E) is a 3D CAD software used for mechanical design and manufacturing. It uses a parametric, feature-based modeling approach. The key modes in Pro/E include sketching, part creation, assembly, and drawing generation. Common commands like extrude, fillet, pattern, and trim are used to create the features of a turbine part model consisting of an inlet, storage, nozzle, rotor, coupling/shaft, outlet, clip, and housing. The individual parts are then assembled together to form the complete turbine assembly model.
improved transformerless inverter
This project presents a high-reliability single-phase transformer less grid-connected inverter. Both unipolar and bipolar SPWM techniques are used. A 1-kW prototype was simulated and tested to verify the theoretical analysis of the project. The inverter is designed for high efficiency, small size, light weight, and low cost grid connections for single-phase PV systems.
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laser security alarm (Physics investigatory project 12)
laser security alarm (Physics investigatory project 12)
LDR BASED MOBILE CHARGING AND PUBLIC LIGHTNING BY USING SOLAR TREE EEE/ECE S...
LDR BASED MOBILE CHARGING AND PUBLIC LIGHTNING BY USING SOLAR TREE EEE/ECE S...
Electrical engineering (transformers basic information)
Electrical engineering (transformers basic information)
Automatic theft controller system using burglar alram
Automatic theft controller system using burglar alram
Similar to Laser security system
Lattice Energy LLC-Game changing LENRs - What are they and amazing things the...
LENRs could enable the development of safe, portable nuclear power sources by producing energy through nuclear reactions that do not emit dangerous radiation or radioactive waste. This is made possible by a new theory explaining LENRs as many-body collective electroweak reactions producing low-energy neutrons. LENRs could power devices from small electronics to large power plants due to their potential for high energy density and scalability without the safety challenges of conventional nuclear technology. Portable LENR power sources might vastly exceed chemical batteries in performance by enabling dramatic increases in the range and lifetime of various products.
A 2.98 dB NF, 2.52 mW Ultra-Wideband Low Noise Amplifier for a Brain Neuromod...
This work presents a low noise amplifier (LNA) for
lower ultrawideband (UWB) applications. The proposed LNA is
based on a current-reuse common source (CS) architecture so as
to achieve energy efficiency without sacrificing the noise
performance. With 1.2V supply voltage, the proposed LNA
consumes 2.52 mW power and achieves a 16.81 dB peak gain at 4.2
GHz frequency, with a 3-dB bandwidth of 1.28 GHz. The average
noise figure (NF) achieved is 2.98 dB over the 3-dB bandwidth. The
design is realized using a standard 0.18 µm CMOS process. The
characteristic of the proposed amplifier makes it a proper
candidate to be applied for implantable medical devices.
The Federal Communications Commission (FCC)
designated the 3.1-10.6 GHz frequency band for unlicensed
ultra-wideband (UWB) use back in 2002 promoting
commercial mass-market practices. UWB technology has
sparked substantial interest in both educational and commercial
enterprise because of its promise to provide high-speed shortrange wireless data transmission with considerable energy
efficiency.
UWB technology has shown promise for a number of
applications including Wireless Personal Area Networks
(WPAN) [1][2] and Wireless Sensor Networks [3]. UWB
communication uses the 3.1-10.6 GHz frequency spectrum
(lower band: 3.1-5 GHz; higher band: 6-10.6 GHz). The
development of the first generation UWB system will take
place in the low frequency range (3.1-5 GHz). When
considering time to market, hardware cost, degree of
complexity, and other factors, CMOS technology is a good
choice for implementing a low band UWB system [4]
Multiple channels are used to capture and transmit data in
high data rate biomedical applications such as neural signal
recording systems for brain-computer interface. The neural
recording system proposed in [9] uses a 128-channel system to
transfer the recorded brain signal at a data rate of 90 Mbps while
consuming only 6 mW of power. As the number of channels or
sample rate of the Analog to Digital Converter (ADC) increases,
so does the data rate. As such, the power consumption also
increases. As a result, it is critical to decrease power
consumption for such high data rate applications.
The novelty of this work is to design an energy-efficient
front-end amplifier exploiting 180 nm CMOS process which
enables the receiver chain to be operated in the UWB frequency
spectrum making it suitable for high data rate biomedical
applications. The design architecture of the proposed LNA is
discussed in section II. In section III, the simulation results are
provided followed by a concluding remark in section IV
The circuit diagram of the proposed LNA is shown in Fig.
1. It consists of four stages including input matching stage,
common source first stage, current reuse stage and the output
matching stage. The input matching network consists of the
capacitors C1 and C2 and the inductor L1 and L2. L2 is in series
resonance with the total capacitance connected to the gate
terminal of transistor MN1
Memristor!!
This document discusses memristors, a fourth fundamental circuit element predicted in 1971 and realized in 2008. Memristors are two-terminal devices whose resistance depends on the history of applied voltages. The first memristor was created at HP Labs using a thin film of titanium dioxide sandwiched between platinum electrodes. By drifting oxygen ions with an electric field, the device's resistance could be switched to represent binary data states. Memristors could replace other non-volatile memory types and even mimic neural behaviors, with potential applications in memory, programmable logic, and neuromorphic computing.
Infrared Security System
Infrared Security System -
A really good topic for Physics Project for all ages.
A little out of place due to new fonts used.
fw1728_Final Year Project Report Submission
The document is a final year project report submitted by Frederick A. O. White on April 27, 2015. It describes the design, development, and testing of an acoustic trapping device to trap live cells and microparticles. The device uses piezoelectric transducers to generate a standing wave acoustic field that successfully aligned human cells and 8 μm polymer beads while maintaining over 50% cell viability for up to two hours compared to controls. Computational analysis of particle distributions was used to study the quality and rate of alignment provided by the device.
Next-Generation Optical Fiber Fabrication
FIRST developed in the 1970s, thin, flexible, and transparent optical fiber revolutionized the telecommunications industry, acting as the structure for carrying electromagnetic waves from point to point. Because of its large bandwidth and immunity from electromagnetic interference, optical fiber has largely replaced copper wire for transmitting data over long distances—across the country, for example.
An optical fiber can also be made into a laser by mixing rare-earth ions into the fiber’s glass structure and pumping those ions with a separate laser diode, such as the diodes that generate the light in a laser pointer. Fiber lasers can take this concept a step further, combining the power of many inexpensive laser diodes into a single coherent beam. The fibers are especially well suited for scaling up high-power, continuous-wave lasers that emit a steady stream of photons. Commercial laser systems have reached average powers of 10 kilowatts, high enough to cut and machine metal parts for the automotive and heavy-equipment industries.
Because fiber lasers are compact and reliable and their beams can be focused to extremely small, diffraction-limited spots, they have also found a niche in scientific applications. In this area, however, their performance is limited. They work well for tasks in which energy is spread evenly over time—the metaphorical equivalent of slowly pushing a tack into a board with your thumb—but not for applications that require energy bursts—akin to hitting a nail with a hammer. That’s because the fiber’s small cross section lets it amplify pulses to levels that damage the fiber itself.
Unlike the bulk fibers produced by the telecommunication industry, which are completely solid and circularly symmetric, Livermore researchers have developed intricately detailed ribbon-like photonic crystal fibers made designed to handle some serious power coursing through them.
Read more: http://1.usa.gov/1lBJILd
CV of Md Nasir Uddin Bhuyian
Md Nasir Uddin Bhuyian is a postdoctoral research associate at New Jersey Institute of Technology whose research interests include simulation, modeling, and characterization of semiconductor devices as well as III-nitride devices for photonic applications and device reliability issues. He received his Ph.D. in Electrical Engineering from NJIT in 2015 and has extensive experience in cleanroom fabrication and electrical characterization of MOSFETs, MOS capacitors, III-V semiconductors and nanowires.
The Missing Fundamental Element
The document discusses memristors, which were proposed in 1971 as a fourth fundamental circuit element along with resistors, capacitors, and inductors. It provides background on memristors, including how they were first theorized and then created experimentally in 2008. Memristors can "remember" the amount of charge that has previously flowed through the device. The document discusses potential applications of memristors in areas like neural networks, due to their similarity to biological synapses. It concludes that memristors may enable new technologies but their advantages over other memory technologies still need to be fully evaluated.
Basic electronics, lecture 1
This document outlines the syllabus and content for a basic electronics course. It discusses that the course grade will be based on midterm, final, and sessional marks. Sessional marks depend on behavior, participation, assignments, presentations, attendance, and quizzes. Contact information for the instructor is provided. Recommended reference materials are listed. An introduction to electronics and its role in daily life is given. The history of electronics from vacuum tubes to integrated circuits is summarized. Fundamental electronics components like resistors, capacitors, diodes, and transistors are defined. Band theory, intrinsic and extrinsic semiconductors, and PN junctions are explained conceptually. Students will have a homework assignment on electricity and magnetism
Db8 Acde4 Bdb9 137 E Cae0 Bb8 E4115 B259 172487
This document proposes and analyzes an Ultra-Long Fiber Laser (UFL) system for secure key distribution using classical optical components. The system establishes laser oscillation between two parties based on their randomly chosen spectrally selective mirrors. Each user can extract the other's mirror choice from analyzing the UFL signal, while an adversary can reconstruct only a small fraction of the key. The document provides an extended security analysis considering transient signals and presents initial experimental support. While not unconditionally secure, the system offers simplicity and scalability compared to quantum key distribution.
134 logeswaran
This document reviews maximum power point tracking (MPPT) algorithms for photovoltaic systems. It discusses conventional MPPT techniques like perturb and observe and incremental conductance. It also examines intelligent MPPT techniques using fuzzy logic, artificial neural networks, particle swarm optimization, ant colony optimization, and firefly algorithms. The firefly algorithm is proposed as suitable for partial shaded conditions due to its ability to find the global maximum power point. The document concludes that while conventional MPPT methods have limitations, intelligent techniques have merits and drawbacks, and further research is needed.
laser light security system using camera
This document is an engineering report submitted by a group of students for their freshman engineering project on a Laser Security System. It includes a title page, bonafide certificate signed by faculty, a table of contents and 13 chapters. The chapters describe an introduction to the project, existing systems, identified problems, the proposed system, block diagram, circuit design, materials and methods, working, hardware discussion, advantages and limitations, conclusion and references. It also includes lists of figures and abbreviations.
Radioactivity and nuclear transformation
This lecture discusses the discovery of radioactivity by Henri Becquerel in 1896. Some key points:
1) Becquerel discovered that uranium salts would expose photographic plates even when not exposed to light, emitting "mysterious rays" that could pass through materials like x-rays.
2) Further experiments showed the rays were not dependent on any external source and the effect did not fade over time, challenging the idea of phosphorescence.
3) The discovery of radioactivity was an unexpected finding that burst onto the scientific scene. It showed that atoms of some elements can spontaneously emit radiation through nuclear decay.
X-Ray tube.pptx
An X-ray tube is a critical medical and scientific instrument that plays a fundamental role in generating X-rays for various applications. X-ray tubes are widely used in the field of medicine for diagnostic imaging, as well as in industrial and scientific settings for materials analysis and research.
Silicon drift detectors sddedxrf2011
This document discusses Silicon Drift Detectors (SDD) for use in synchrotron energy dispersive X-ray fluorescence (EDXRF) spectroscopy. It begins with an introduction to SDDs, explaining their structure and operating principle. It then describes the features and high performance of SDDs, including high count rates up to 500,000 counts per second and excellent energy resolution of 125 eV FWHM at 5.9 keV. Applications of SDDs in EDXRF spectroscopy and portable XRF devices are also mentioned. In the concluding remarks, the key advantages of SDDs are summarized as having lower capacitance than conventional silicon detectors, allowing better energy resolution at higher count rates.
Silicon Drift Detectors for Energy Dispersive X- Ray Fluorescence ( SDDEXRF)
This document discusses Silicon Drift Detectors (SDD) for use in synchrotron energy dispersive X-ray fluorescence (EDXRF) spectroscopy. It begins with an introduction to SDDs, explaining their structure and operating principle. It then describes the features and high performance of SDDs, including their high count rate, good energy resolution, and large active area. The document presents spectra from an Fe55 source taken with an SDD and includes diagrams of detector modules, cooling systems, and integration with spectroscopy systems. It concludes by emphasizing the key advantages of SDDs for spectroscopy applications like their lower noise and ability to operate at higher count rates than conventional semiconductor detectors.
Sd dpresentation13 nov2011
This document discusses Silicon Drift Detectors (SDD) for use in synchrotron energy dispersive X-ray fluorescence (EDXRF) spectroscopy. It begins with an introduction to SDDs, explaining their structure and operating principle. It then describes the features and high performance of SDDs, including high count rates up to 500,000 counts per second and excellent energy resolution of 125 eV FWHM at 5.9 keV. Applications of SDDs in EDXRF spectroscopy and portable XRF devices are discussed. In closing, the key advantages of SDDs are noted as their low capacitance, which enables better energy resolution at high count rates compared to conventional semiconductor detectors.
Carnot - efficiency based Nanoantenna Systems
This document discusses nanoantennas and their applications. Nanoantennas are analogous to phenomena in metallic nanostructures called localized surface plasmon resonance where radiation energy is converted to localized energy. Nanoantennas have a wide range of applications including nanophotonics, plasmonic solar cells, metamaterials, chemical and biomedical sensing, on-chip interconnects, and more. However, nanoantennas require quantum mechanical treatment rather than classical treatment due to their small size. The author proposes ideas for improving nanoantenna efficiency including optimizing antenna elements, using coupling capacitance, graphene-based absorbing antennas, and circuit implementations.
Amin Arbabian - Stanford Engineering - Internet of Things as Connected Intell...
Amin Arbabian - Stanford Engineering - Internet of Things as Connected Intell...Stanford School of Engineering
Today most people on Earth are connected through wired or wireless networks, or both. The next leap in connectivity will give people the ability to control objects and machines. The Internet of Everything (IoE) will tag objects with tiny wireless devices for communication, computation and sensing. Some projections show demand for such IoE smart sensors will grow from billions to trillions within a decade. The essential enabling technology is an ultra-low power smart radio to provide a unique IP address and location. In this talk, Amin Arbabian discusses how he developed an ant-sized wireless-powered radio chip that costs pennies to fabricate– making it cheap enough to become the missing link to enable the Internet of Everything.ELECTRICAL EARTHING
This document provides an overview of electrical earthing, including its definition, objectives, types, components, reasons for use, and applications. Earthing provides a path for fault currents to flow safely to earth, protects lives and equipment from leakage currents, and causes circuit breakers to trip during faults. Common earthing types include plate, pipe, rod and strip earthing. Proper earthing is important for electrical safety in systems like power generation, transmission, buildings and more.
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Silicon Drift Detectors for Energy Dispersive X- Ray Fluorescence ( SDDEXRF)
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Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
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Removing Uninteresting Bytes in Software Fuzzing
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
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Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
ABSTRACT: A prima vista, un mattoncino Lego e la backdoor XZ potrebbero avere in comune il fatto di essere entrambi blocchi di costruzione, o dipendenze di progetti creativi e software. La realtà è che un mattoncino Lego e il caso della backdoor XZ hanno molto di più di tutto ciò in comune.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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Climate Impact of Software Testing at Nordic Testing Days
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
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Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Securing your Kubernetes cluster_ a step-by-step guide to success !
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Encryption in Microsoft 365 - ExpertsLive Netherlands 2024
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Laser security system
- 1. EEE 1317
- 2. EEE 1317
- 3. EEE 1317
- 4. EEE 1317
- 5. EEE 1317 Where , R = resistance of the sensor Rd =dark resistance I =intensity of the light α, =these are constants which are material dependent.
- 6. EEE 1317
- 7. EEE 1317
- 8. EEE 1317
- 9. EEE 1317
- 10. High Efficiency Fast Response easily maintainable Durable Cost efficient EEE 1317
- 11. Heating effect in LDR Lasting Notification for any types of object EEE 1317
- 12. This Laser Security System is very useful in high command security place Hostel Hospitals Institutions Buildings a
- 13. IEEE spectrum ( May 2009), the 555 was selected as one of the” 25 Microchips that shook the world”. Adel S. Sedra & Kenneth C. Smith.,”Microelectronics Circuit 6th edition” D. patranabis,” Sensors and Transducers” 2nd edition. Kogelnik, H., and Li, T., "Laser beams and resonators," Appl. Opt., vol. 5, Oct. 1966. Diffenderfes, Robert (2005). Electronic Devices: System and Applications. New Delhi: Delimar. p. 480. ISBN 978- 1401835149 EEE 1317
- 14. EEE 1317
- 15. EEE 1317
Editor's Notes
- Typical max speeds: 3-5 m/s with 1 micron resolution, 5+ m/s (>200 ips) with less resolution Budget is main restraint on controller bandwidth Higher stiffness (spring rate), though limited by motor peak force, available current, and feedbakc resolution
- Linear encoders are usually around $500 for 100 mm travel encoder, cost increases with length. Rotary encoders are relatively inexpensive – tend to be under 100 dollars No mechanical reduction between motor and load, thus servo response (bandwidth) must be faster. Includes higher encoder bandwidth and servo update rates Linear motors are not compact force generators when compared to rotary motor with transmission offering mechanical advantage. Example 3/8” diam. Ball screw produces 100 lb of thrust, while 15 lb of linear thrust typically requires 2” x 1.5” cross section. Heat management techniques such as air and water cooling options (both common, popular) have to be applied Suppose it’s traveling at 3 m/s and loses power. Without resistance, it will quickly reach end of end of system, mechanical stops. Linear encoders are usually around $500 for 100 mm travel encoder, cost increases with length. Rotary encoders are relatively inexpensive – tend to be under 100 dollars No mechanical reduction between motor and load, thus servo response (bandwidth) must be faster. Includes higher encoder bandwidth and servo update rates Linear motors are not compact force generators when compared to rotary motor with transmission offering mechanical advantage. Example 3/8” diam. Ball screw produces 100 lb of thrust, while 15 lb of linear thrust typically requires 2” x 1.5” cross section. Heat management techniques such as air and water cooling options (both common, popular) have to be applied Suppose it’s traveling at 3 m/s and loses power. Without resistance, it will quickly reach end of end of system, mechanical stops.