Propulsion (1): Jet Engine Basics - SmartCockpit

[Pages:61]FLIGHT OPERATIONS ENGINEERING

Propulsion (1): Jet Engine Basics

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Propulsion (1): Jet Engine Basics

? Jet Engine Fundamentals (Videos) ? Types of Jet Engines ? Propulsive Efficiency and the Thrust Equation ? More Engine Terminology

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Pratt & Whitney Videos on Jet Engine Fundamentals

1 - "The concepts of thrust" 2 - "Typical Turbo Jet Engines" 3 - "Variations in Jet Engine Design" 4 - "Types of Gas Turbine Engines"

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What is a Jet Engine?

? A jet engine is a machine designed for the purpose of creating large volumes of high-velocity exhaust gasses. (This sounds simplistic, but it is essentially correct.)

? This is done in order to produce the thrust needed to overcome the aerodynamic drag of an airplane.

? In the process of producing high-velocity exhaust, the jet engine also produces: ? Electrical power ? Hydraulic power ? Pneumatic power for A/C and pressurization ? Hot air for anti-icing protection

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Basic Operation of a Jet Engine

? The basic operation of a jet engine is: ? Air enters and is compressed in a compressor. ? Fuel is then added and ignited. ? The resulting gas spins a turbine, ? The turbine powers the compressor. ? The gas then exits the engine at the tailpipe.

? The way a jet engine operates is similar to the way an automobile engine operates: Intake, compression, ignition, exhaust.

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