Global Jet Engines(喷气发动机) Market Research Report目录.docVIP

PAGE 1 PAGE 1 Global Jet Engines Market Research Report 2016 Chapters 1 Jet Engines Market Overview 1.1 Product Overview and Scope of Jet Engines Jet Engines is a reaction engine discharging a fast-moving jet that generates thrust by jet propulsion. This broad definition includes turbojets, turbofans, rocket engines, ramjets, and pulse jets. In general, jet engines are combustion engines. Figure Picture of Jet Engines Source: QYR Aerospace Defense Research Center, Oct. 2016 1.2 Jet Engines Segment by Types 1.2.1 Global Production Market Share of Jet Engines by Types in 2015 Figure Global Production Market Share of Jet Engines by Types in 2015 Source: QYR Aerospace Defense Research Center, Oct. 2016 Table Classification of Jet Engines Types Description 1 Turbojet Engine The turbojet is an airbreathing jet engine, usually used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet, a compressor, a combustion chamber, and a turbine (that drives the compressor). The compressed air from the compressor is heated by the fuel in the combustion chamber and then allowed to expand through the turbine. The turbine exhaust is then expanded in the propelling nozzle where it is accelerated to high speed to provide thrust. Two engineers, Frank Whittle in the United Kingdom and Hans von Ohain in Germany, developed the concept independently into practical engines during the late 1930s. 2 Turbofan Engine The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word turbofan is a portmanteau of turbine and fan: the turbo portion refers to a gas turbine engine which achieves mechanical energy from combustion, and the fan, a ducted fan that uses the mechanical energy from the gas turbine to accelerate air rearwards. Thus, whereas all the air taken in by a turbojet passes through the turbine (through the combustion chamber), in a turbofan