Wednesday, February 12, 2020
Produce a written technical report on one of these topics (please see Essay
Produce a written technical report on one of these topics (please see description) - Essay Example Turbine gas engines have almost replaced the piston engines in the aviation industry for aircraft power generation. Categorized as turbojet, turbofan, turboprop, or turboshaft engine, the gas turbine engines are the most significant breakthrough in the history of aviation. Constant (1980) highlights that specific to their purpose, different types of engines are employed in the industry. Design characteristics including number of spools, principle of compression, distribution of airflow within the engine, utilization of the exhaust gas are the main deciding factors for this purpose. Basically, four types of turbine engines are used in aviation industry, these include In Turbojet and turbofan engines, reaction of exhaust gases leaving the exhaust nozzle is used ro produce thrust. Turbofan engines are further classified as as high-bypass or low-bypass-ratio engines based on requirements of mass flow. A typical schematic diagram of turbofan and turbojet engines is shown below for reference study. In third type of gas engines, turboprop, propeller is driven a turbine rotated by hot gases. Major portion of the exhaust gases is absorbed by turbine to produce mechanical work with a very small portion to produce thrust. Below is a schematic diagram of the turboprop engine. Air intake is the most important part of a subsonic and a supersonic aircraft as it ensure optimum supply of air to engine for producing required thrust. The design of intakes depends on engine requirements and aircraft design speeds. since the primary task of air intakes is to supply air for engine, then the ultimate responsibility for air intake design is attributed to aircraft airframe designer rather than engine designer. Therefore, it is important that both designers work in coordination with each other to reach optimum design (Mattingly 2005). The intake design such that it ensures that required amount of air
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