AERONAUTICAL PROPULSION SYSTEMS This report is an investigation into the evolution and mechanical functionality of aeronautical propulsion systems, from the early attempts at propulsion to modern propulsion system such as propeller, internal combustion engine, ramjet engine and gas turbine. As this report will focus of aeronautical propulsion systems, rocket propulsion systems are almost exclusively involved in astronautics and will not be discussed. As an engineer will have to decide the best combination of engine and thrust device to attach to an aircraft. This report covers the technical developments in the advancement in propulsion systems. This is in conjunction with social, environmental and safety impacts an engineer must have overcome is also to be covered in this investigation. The inclusion of mathematical procedures is avoided as far as possible to focus on clear and concise content. Many Different sources were used for this investigation including: Websites, books and active INTRODUCTION Essential to every aircraft is the need for a propulsion system to provide thrust. This comes in many forms and an engineer will have to decide the best propulsion system to incorporate in any specific aircraft. From mechanical functionality to utilizing different forms of thrust; these systems have evolved since aviation’s first conception. As there is an estimated over 3 million passengers (http://www.arabnews.com/news/537081) flying every day and as such propulsion systems play a huge role in modern society which consequently brings social, environmental and safety concerns. Before elaborating on the main subject, it is necessary to establish a couple basic fundamental principles. THRUST What is thrust? Aeronautical prop... ... middle of paper ... ...wearing proper PPE. This can also be reduced as traditional riveting process used in producing propulsion systems. Recent advances in rivet technology have considerably reduced the noise levels in some specialized riveting processes. This can be incorporated to reduce noise and reduces or eliminates the requirement for hearing protection. Fine dusts Fine material fibres such as asbestos and silica are known to cause fatal lung conditions. Such hazards are produced by fine dust is when glass-fibre or cured carbon fibre components need trimming to size grinders. This generates a large quantity of fine dust which can easily penetrate deeply into the lungs of workers causing discomfort and cause skin irritation. Therefore designated booths where the dust is vented out of the factory is necessary, where workers in the booth wear full body and repertory protection suit.
Ever since I was little I was amazed at the ability for a machine to fly. I have always wanted to explore ideas of flight and be able to actually fly. I think I may have found my childhood fantasy in the world of aeronautical engineering. The object of my paper is to give me more insight on my future career as an aeronautical engineer. This paper was also to give me ideas of the physics of flight and be to apply those physics of flight to compete in a high school competition.
Following World War II and the jet engine technology that emerged largely toward its end, aerospace engineers knew well that the technology had great potential for use in the commercial aviation industry. The Comet was the first aircraft to utilize jet propulsion; however, its designers failed to consider the metallurgy of the aircraft’s materials under flight conditions or the consequences of their atypical window design. The aircraft was designed by Britain’s De Havilland Aircraft Company and entered service in May 1952. After a year of service, however, the design issues mentioned above resulted in the failure of several Comet aircraft. Extensive evaluations revealed that repeated pressurization stress on the aircraft’s main cabin had caused its structure to fail.
Many people are amazed with the flight of an object, especially one the size of an airplane, but they do not realize how much physics plays a role in this amazing incident. There are many different ways in which physics aids the flight of an aircraft. In the following few paragraphs some of the many ways will be described so that you, the reader, will realize physics at work in the world of flight.
Since the time of the World Wars and the Wright brothers, aviation has become a huge part of global society. The Orville and Wilbur Wright’s names will forever be remembered into United States history as the first men who were the first to fully realized human flight. Their successful invention of a working, powered airplane brought about whole new ways of wars, including new strategies for both offense and defense. Many technological advances might not have occurred without the need for new weapons and systems for airplanes. Travel and commerce would be much slower without the usage of airplanes. Orville and Wilbur have made a lasting impact on the world with their invention of a working, human-controlled, powered airplane; who knows what the world would be without it.
In this paper you will learn so much about rockets you can become a rocket specialist. Many may ask how do rockets work? Many will respond that they are pushed against something but that is wrong. Since rocket's main purpose are to travel in space where there is nothing, not even air they can not rely on “something” to push themselves against in space. This is the right answer to how rockets work; Rockets use fuel, they burn the fuel and it turns into hot gas.
Masks and personal protective equipment were not worn by the factory workers. With no preventative measures taken, workers respiratory tracts were exposed to cotton, flax, and hemp dust. This exposer caused side effects such as chest tightness, shortness of breath, long term respiratory diseases (COPD), and permeant loss of lung functions. These symptoms were later classified as a syndrome called byssinosis before disease were diagnoses. According to the online article, “Long term respiratory health effects in textile workers,” there were two obstructive lung diseases textile workers exhibited, Asthma and COPD. The article states that two hundred and twenty-five newly hired textile workers were studies and found to have increased in asthma like symptoms at a one year follow up. The article continues to explain that there was an increase in incidence of chronic and progressive dyspnea, cough, and sputum production characteristic of COPD seen textile workers on year follow up as well. Another lung problem seen in some textile workers per Dr. Edward Holmes interview in 1818 was Scrofula, known today as
Aviation has come a long way since the 19th century, from the Wright brothers taking flight with the first powered and controlled gliders, to aircraft that can travel up to supersonic speeds, orbiting satellites and space stations which then were only thought to be science-fiction. Aerospace and aviation has proven to be one of the biggest challenges to advance in the entirety of human existence. There are many factors and characteristics that contributed to this advancement such as the engines of aircraft, forces of flight, aerodynamic forces, wingspans etc. The two most significant aspects however have been; World War 1 and World War 2.
Flight is one of the most important achievements of mankind. We owe this achievement to the invention of the airfoil and understanding the physics that allow it to lift enormous weights into the sky.
After Diesel’s death, the diesel engine underwent much development and became a very important replacement for the steam piston engine in many applications. Because the diesel engine required heavier, more robust construction than a gasoline engine, it was not widely used in aviation. The diesel engine became widespread in many other applications, however, such as a stationary engines, submarines, ships, and much later, locomotives, trucks, and in modern automobiles. Diesel engines are most often found in applications where a high torque requirements and low RPM requirements exist.
Imagine two US Air Force Jets with controls not responding, they are heading right for each other, the pilots don’t have enough time to eject, there’s a mid-air explosion, and the needless death of American servicemen. About one fifth of peacetime fighter losses during the past few years were due to loss of control. Now imagine that the US has been developing the technology to prevent this for the last decade, but due to budget problems this technology was never installed on our fighters. I’m talking about a Thrust Vectoring. This engineering term describes the use of an engines nozzle to direct the force coming from a jet engine in different directions other then straight out the back. Besides tragic, needless deaths, this technology has a military significance for front line fighter jets. With the wars in Iraq and Afghanistan, Americans have seen the devastating power of our Air Force on Countries without a serious Air Defense network, like Israel or Great Britain. These are countries with not just a Surface to Air Missile (SAM) threat, but an Air Force that can rival ours in its current state. Thrust Vectoring is the technology that will make our fighter jets true rulers of the air, not just on bombing runs, but air-to-air combat, better know as “Dog Fighting”.
The trials and tribulations of flight have had their ups and downs over the course of history. From the many who failed to the few that conquered; the thought of flight has always astonished us all. The Wright brothers were the first to sustain flight and therefore are credited with the invention of the airplane. John Allen who wrote Aerodynamics: The Science of Air in Motion says, “The Wright Brothers were the supreme example of their time of men gifted with practical skill, theoretical knowledge and insight” (6). As we all know, the airplane has had thousands of designs since then, but for the most part the physics of flight has remained the same. As you can see, the failures that occurred while trying to fly only prove that flight is truly remarkable.
In my undergraduate years, I have acquired a strong background in the fundamentals of basic mechanical engineering, having studied subjects such as Strength of Materials, Thermodynamics, Fluid Mechanics, Heat and Mass Transfer, Design of Machine Elements and Automobile Engineering. Whilst pursuing my diploma & degree courses, my interest for Automotive Engineering grew even more having learnt more on the different types of internal combustion engines, their configuration and importance. However, what I lacked was a practical understanding on these core areas of Automotive Engineering. To gain a better understandi...
Aerodynamics is a branch of dynamics that studies the movement of air and the way solid objects react when they move through the air. Aerodynamics has contributed to the advancing of airplanes and other vehicle technology. In this essay I will be discussing how aerodynamics have improved and changed our world in several great ways. Overall, without aerodynamics, our world today would not be as developed as it is now.
refined in the 1930's when the turbine engine design lead to the patent of the
A in November 1962, the British and French governments agreed to develop and build a supersonic aircraft. Each design presents an aerodynamic supersonic aircraft with a range of difficult problems, including two that have the highest interest powerplant installation and design of subsonic aircraft. supersonic speed because it is there are many configuration changes have been introduced, particularly in the areas of the nose and visor, rear wing and fuselage. the head of...