HOVERCRAFT PRESENTETION
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This document summarizes a seminar presentation on hovercrafts. It includes: - An introduction to hovercrafts, describing them as vehicles that can fly, float, and drive over surfaces like grass, mud, sand, water and ice. - A brief history of hovercraft development, noting early designs in the 1700s and the inventor who successfully built the first hovercraft in the 1960s. - Descriptions of the basic components of hovercrafts, including lifting fans, thrust propellers, flexible skirts, engines, and rudders. - An explanation of how hovercrafts work based on lift and propulsion principles using air pressure under the flexible skirt.
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A SEMINAR ON HOVERCRAFT
This document outlines a presentation on hovercrafts. It begins with an introduction defining a hovercraft and its ability to travel over various surfaces. It then discusses the history of hovercraft development from early designs in the 17th century to Sir Christopher Cockerell's invention and commercialization in the 1950s. The main sections cover the principles of hovercraft operation using propellers, fans, and skirts to create lift; typical components like the hull, lifting system, thrust system and skirts; and applications for personal use, search and rescue, and military purposes.
Hovercraft
This document outlines a presentation on hovercrafts. It begins with an introduction and covers the history, elements, operation, advantages, disadvantages, applications, and future of hovercrafts. It describes how hovercrafts work by pushing air under the vehicle to create lift and uses propellers for thrust. While they can travel over most surfaces, they are noisy, bulky, and not very agile. However, the document suggests hovercraft technology continues to improve and they may have greater transportation applications in the future such as carrying passengers on roads.
Hovercraft seminar report
This document provides an overview of hovercrafts. It begins with acknowledgements and an abstract. The main topics covered include the history and development of hovercrafts from early designs in the 1700s to Christopher Cockerell's modern invention in the 1950s. Constructional features such as the lifting fan, thrust propellers, momentum curtain, and skirt are described. The document also discusses the working principle, advantages, disadvantages, applications, and future of hovercraft technology.
Hover Craft
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The document discusses hovercrafts, including their history, design, operation, and applications. Some key points:
- Hovercrafts were first conceptualized in the 1870s but were pioneered in the 1950s by Christopher Cockerell, who patented the design.
- They work by blowing air under the hull with lift fans to create an air cushion that allows movement over land and water. Flexible skirts around the edges contain the air.
- In addition to passenger ferry services, hovercrafts see military uses like mine countermeasures and transport. Future applications may include hover trains and cars.
HOVER CRAFT
This document provides an overview of hovercrafts, including their history, basic structure, principles of operation, advantages, and records. It discusses how the first hovercraft designs date back to the 18th century but weren't practical until the 20th century with more powerful engines. The basic components of a hovercraft include propellers, fans, skirts, and lower hulls. Hovercrafts are able to travel over land and water through the use of fans that create an air cushion under the craft. Their advantages include the ability to travel over many surfaces and access more coastal areas.
Aircraft propulsion
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HOVERCRAFT / AIR CAUSHION VEHICAL
This document is a seminar report on hovercraft submitted by Nipranch Shah to the Department of Mechanical Engineering at Sir Padampat Singhania University in Udaipur, India in May 2014. The report provides an overview of hovercraft, including their history, construction features, operation, aerodynamics, working principle, advantages, disadvantages, and applications. It discusses key components like the lifting fan, thrust propellers, momentum curtain, and flexible skirt. The report also outlines some specific hovercraft applications like lifeboats, passenger transport, racing, and military uses.
Recommended
A SEMINAR ON HOVERCRAFT
This document outlines a presentation on hovercrafts. It begins with an introduction defining a hovercraft and its ability to travel over various surfaces. It then discusses the history of hovercraft development from early designs in the 17th century to Sir Christopher Cockerell's invention and commercialization in the 1950s. The main sections cover the principles of hovercraft operation using propellers, fans, and skirts to create lift; typical components like the hull, lifting system, thrust system and skirts; and applications for personal use, search and rescue, and military purposes.
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This document outlines a presentation on hovercrafts. It begins with an introduction and covers the history, elements, operation, advantages, disadvantages, applications, and future of hovercrafts. It describes how hovercrafts work by pushing air under the vehicle to create lift and uses propellers for thrust. While they can travel over most surfaces, they are noisy, bulky, and not very agile. However, the document suggests hovercraft technology continues to improve and they may have greater transportation applications in the future such as carrying passengers on roads.
Hovercraft seminar report
This document provides an overview of hovercrafts. It begins with acknowledgements and an abstract. The main topics covered include the history and development of hovercrafts from early designs in the 1700s to Christopher Cockerell's modern invention in the 1950s. Constructional features such as the lifting fan, thrust propellers, momentum curtain, and skirt are described. The document also discusses the working principle, advantages, disadvantages, applications, and future of hovercraft technology.
Hover Craft
Semester Project: Design and Fabrication of Hovercraft
@University of Engineering and Technology Lahore City Campus
Hovercrafts
The document discusses hovercrafts, including their history, design, operation, and applications. Some key points:
- Hovercrafts were first conceptualized in the 1870s but were pioneered in the 1950s by Christopher Cockerell, who patented the design.
- They work by blowing air under the hull with lift fans to create an air cushion that allows movement over land and water. Flexible skirts around the edges contain the air.
- In addition to passenger ferry services, hovercrafts see military uses like mine countermeasures and transport. Future applications may include hover trains and cars.
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This document provides an overview of hovercrafts, including their history, basic structure, principles of operation, advantages, and records. It discusses how the first hovercraft designs date back to the 18th century but weren't practical until the 20th century with more powerful engines. The basic components of a hovercraft include propellers, fans, skirts, and lower hulls. Hovercrafts are able to travel over land and water through the use of fans that create an air cushion under the craft. Their advantages include the ability to travel over many surfaces and access more coastal areas.
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This document defines aircraft and propulsion, and provides examples of different aircraft types. It focuses on helicopters, describing their history and types. Helicopters generate lift through main and tail rotors. The main rotor blades create lift as air flows faster over their curved upper surfaces. The tail rotor controls direction and counteracts the spinning forces from the main rotor.
HOVERCRAFT / AIR CAUSHION VEHICAL
This document is a seminar report on hovercraft submitted by Nipranch Shah to the Department of Mechanical Engineering at Sir Padampat Singhania University in Udaipur, India in May 2014. The report provides an overview of hovercraft, including their history, construction features, operation, aerodynamics, working principle, advantages, disadvantages, and applications. It discusses key components like the lifting fan, thrust propellers, momentum curtain, and flexible skirt. The report also outlines some specific hovercraft applications like lifeboats, passenger transport, racing, and military uses.
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The document is a seminar report on hovercrafts that includes:
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- An abstract that introduces hovercrafts as air cushion vehicles that can travel over land, water and ice using a self-generated air cushion, and notes their use for transporting people and equipment.
- An introduction that defines hovercrafts as vehicles that drive like cars but fly like planes by hovering over surfaces on a cushion of air.
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The document is a seminar report on hovercrafts that includes:
- An acknowledgement section thanking those who provided guidance and support.
- An abstract that introduces hovercrafts as air cushion vehicles that can travel over land, water and ice using a self-generated air cushion, and notes their use for transporting people and equipment.
- An introduction that defines hovercrafts as vehicles that drive like cars but fly like planes by hovering over surfaces on a cushion of air.
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Jet engines produce thrust by channeling the explosion of fuel combustion rearward using a gas turbine. They operate based on Newton's third law, which states that for every action force there is an equal and opposite reaction force. The key parts of a jet engine are the fan, compressor, combustor, turbine, mixer, and nozzle. Air is sucked into the compressor and increases in pressure and temperature before being mixed with fuel and ignited in the combustor. The expanding hot gases power the turbine, which drives the compressor. The gases then exit through the nozzle at high speed, producing thrust that propels the aircraft forward. Jet engines provide advantages of high speed and power-to-weight ratio but have disadvantages of high fuel consumption
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2) Scramjets have no moving parts and rely solely on the high speed of flight to compress incoming air before combustion. They are designed to operate at hypersonic speeds above Mach 5.
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INTRODUCTION:
While a helicopter is a far more complex machine than an aeroplane, the fundamental principles of flight are the same.
The rotor blades of a helicopter are identical to the wings of an aeroplane –when air is blown over them, lift is produced.
The crucial difference is that the flow of air is produced by rotating the wings – or rotor blades – rather than by moving the whole aircraft.
When the rotor blades start to spin, the air flowing over them produces lift, and this can cause the helicopter to rise into the air.
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This document provides a basic introduction to the fundamentals of flight, including the four forces of flight and explanations of lift. It discusses Newton's Laws of Motion and Bernoulli's Principle and how they relate to the generation of lift on airplane wings. It also describes basic airplane control surfaces like the elevator, ailerons, and rudder and how they control pitch, roll, and yaw. Interactive elements demonstrate wing shapes and how aircraft can fly inverted. Overall, the document covers aerodynamic concepts and forces essential to understanding how airplanes are able to fly.
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Chapter 2
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HOVERCRAFT PRESENTETION
- 1. BASAVKALYAN ENGINEERING COLLEGE BASAVKALYAN DEPARTMENT OF MECHANICAL ENGINEERING A SEMINAR ON “HOVERCRAFT” Presented By: Under The Guidance: SOHEL Prof. SHIVARAJ.B 3BK14ME078
- 2. CONTENT INTRODUCTION HISTORY BASIC COMPONENT OF HOVERCRAFT WORKING PRINCIPLE OF HOVERCRAFT ADVANTAGES DISADVANTAGES APPLICATIONS CONCLUSION REFERENCES
- 3. INTODUCTION A Hovercraft is a vehicle that Flies like a plane, Float like a boat, Drive like a car. A Hovercraft can travel over all types of surfaces including grass, mud, sand, water and ice. Hovercraft is also called as Air Cushion Vehicle.
- 4. HISTORY In 1716 “EMMANUEL SWEDENBORG” design the first Hovercraft, but it was short-lived and never built. EMMANUEL SWEDENBORG In 1950 the British inventor “CHRISTOPHER COCKERELL” began his experiment with such vehicles, later in 1960 he successfully built the first Hovercraft. CHRISTOPHER COCKERELL
- 5. BASIC COMPONENTS OF HOVERCRAFT The basically Hovercraft consists of the following main components, they are as follows • Thrust Propellers • Lifting Fan • Flexible Skirt • Engine • Rudders
- 6. LIFTING FAN Usually centrifugal type fan is used to suck the air into the craft skirt which is coupled with gearbox and rotated by engine. THRUST PROPELLERS It is same as that of aircraft propellers, which is used to pushes the Hovercraft ahead by pushing air behind.
- 7. RUDDERS Rudders are similar to that of used in an aircraft, which is used to change the direction of Hovercraft. It mainly used in floating and flying Hovercraft. FLEXIBLE SKIRT Flexible skirt fitted to the bottom of the Hovercraft and it is sensitive design, which protects the Hovercraft and helps to lift the Hovercraft above the ground surface.
- 8. ENGINE A Hovercraft typically uses internal combustion engine, also uses the marine diesel engines since they are fuel efficient. Usually one or more engines are used sometimes up to six engines can be used to generate higher power output.
- 9. WORKING PRINCIPLE Hovercraft works on two main principles: • Lift • Propulsion To lift the craft, air sucked in large lifting fans which are fitted to the structure of the hovercraft, which is powered by gas turbine or diesel engine. At the point when the pressure equals the weight of the craft, the craft lifts up and air is escaped around the edges of the skirt. So a constant feed of air is needed to lift the craft and compensate for the losses.
- 10. ADVATAGES • Travel over any type of surface. • Shortcutting the routes. • It can travel with a great speed. • It does not leads to accidents. • Hovercraft are very fuel efficient. • It can be built up any size, small to large.
- 11. DISADVATAGES • They produces Noise pollution. • They are expensive. • Potential of skirt damage. • Not able to move easily at corner. • It’s high speed make it difficult to control while on land.
- 12. APPLICATIONS • It can be used as personal vehicle. • As Passenger Transport and tourism related journey. • As rescue life boat. • In military operations. • In racing. • In mass transportation.
- 13. SOME PICS OF THE HOVERCRAFT
- 14. CONCLUSION Hovercrafts are generally simple mechanisms in theory. Yet the process from theory to manifestation is not as easy as it may seem. A plethora of problems exist and must be faced in order to attain a well-functioning hovercraft. The plans and designs must be flawless. One must take under consideration the weight and the shape of each component in order to avoid problems such as instability and dysfunction. This is a marvelous machine which greatly cuts down the friction which in turn helps it to attain greater speed and more stability.
- 15. REFERENCES • Fantoni, R. Lozano, F. Mazenc, and K. Y. Pettersen, “Stabilization of a nonlinear under actuated hovercraft,” in Proc. 38th IEEE Conf. Decision Control, vol. 3. Dec. 1999, pp. 2533–2538. • W. B. Dunbar, R. O. Saber, and R. M. Murray, “Nonlinear and cooperative control of multiple hovercraft with input constraints,” in Proc. IEEE Eur. Control Conf., Sep. 2003, pp. 1917–1922. • R. Munoz-Mansilla, D. Chaos, J. Aranda, and J. M. Diaz, “Application of quantitative feedback theory techniques for the control of a nonholonomic under actuated hovercraft,” IET Control Theory Appl., vol. 6, no. 14, pp. 2188–2197, Sep. 2012. • Y. H. Hossamel-din Mechatronics Eng. Department Future University in Egypt (FUE) Cairo, Egypt yehia.hendawy@hti.edu.eg
- 16. THANK YOU