Advances in Aircraft Engines since 1903

Kodanda, B and Selvaraj, R (2003) Advances in Aircraft Engines since 1903. In: 100 Years since First Powered Flight (International Seminar) and Avances in Aerospace Sciences (Technical Seminar) & AeSI-55th AGM, December 2003, Bangalore.

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An Attempt has been made in this paper to highlight the evolution in aircraft engines from 1903 in which the Wright Brothers had made the first successful powered flight with a gasoline engine that produced 12 hp and weighing 152 lb (i.e. weighing 12.6 lb per hp developed) to the experimental stage scramjet and hypersonic combustion engines. The earliest aero engines were piston engines based on auto cycles stationary, either radial in design or in-line. These wee succeeded by the popular rotary engines. Then more sophisticated and powerful stationary in-line engines were used until the arrival of the jet engines. The invention of jet engines by Sir Frank Whittle and Hans J.P. von Ohain revolutionised the powered flight. The basic requirements of a typical aircraft engine are described. Different types of engines, their working principles, advantages, disadvantages, performance, type of aircraft that it can be powered, etc are discussed. The trend in increase thrust and reduction in the weight of the engines over the year are plotted. It has been found that the weight to thrust ratio of the engines witnessed about 125 fold reduction (12.6 lb/hp in 1903 to 0.10 lb/hp for latest engines). Similarly, it was observed that the specific fuel consumption (SFC) also reduced by 67% (1 lb/hour/lbst in early 1900 to 0.33 lb/hour/lbst for the latest engines). Some interesting features in engines like thrust augmentation, thrust reversal, thrust vectoring, noise reduction technologies etc. are discussed.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: piston engines; jet engines; specific fuel consumption; specific weight; specific thrust
Subjects: AERONAUTICS > Aircraft Propulsion and Power
ENGINEERING > Engineering (General)
Depositing User: Kodanda B
Date Deposited: 09 May 2013 05:54
Last Modified: 09 May 2013 05:54

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