Turbine Engines.

4.-Discuss the difference between a forward fan engine and an aft fan engine.

1.-Aftfan engine: A turbofan engine with the fan constructed as an extension of ome

9.-What are the major parts of a gas turbine engine?

1.-Air Inlet. 2.-Compressor Section. 3.-Combustion Section. 4.-Turbine Section. 5.-Exhaust Section. 6.-Accessory Section and the systems necessary for starting, lubrication, fuel supply, and auxiliary purposes, such as anti-icing, cooling, and pressurization.

23.-List the three components in a single stage centrifugal flow compressor.

1.-Impeller (rotor). 2.-Diffuser (stator). 3.-Compressor Manifold.

TurboShaft.

A form of gas turbine engine that used one or more stages of turbines to drive a transmission, which in turn drives the rotors of a helicopter. A turboshaft engine extracts a maximum amount of the heat energy from the exhaust gas to drive the turbine connected to the transmission.

Turbo Prop (turbo-propeller).

A form of gas turbine engine that uses one or more stages of turbines to drive a set of reduction gears, which in turn drives a propeller. Most of the exhaust gases is converted into torque, rather than into a stream of high-velocity exhaust gases, as is done in a turbojet engine.

Turbo Jet.

A form of heat engine that produces thrust by accelerating a relatively small mass of air through a large change in velocity. A compressor in the front of the engine compresses the inlet air , and fuel is sprayed into hiss air and burned. The heat from the burning fuel expands the air and forces it out the back of he engine in the form of high- velocity jet of hot air. The air leaving the engine flows through a turbine which extracts energy to drive the compressor.

Turbofan.

A type of gas turbine engine that has a set of lengthened blades on the low-pressure compressor or low-pressure turbine. Air moved by these special blades bypasses the core engine and produces between 30% and 75% of the total thrust produced by the engine.

14.-Who patented the first turbo jet engine?

Dr. Frank Whittle of England, In 1930. Gloster Model E28/39 Aircraft.

17.-Explain FAN PRESSURE RATIO.

Is the ratio of air pressure leaving the fan to the air pressure entering the fan.

7.The Bell XP-59 was the first American jet aircraft, what year was it first flown?

Oct, 1942.

15.-Compare the Pulse Jet and Ram Jet, Discuss differences.

Pulse jet engines are similar to ramjets except that the air intake duct is equipped with a series of shutter valves that are spring-loaded to the open position.

20.-Explain how the diffuser section works.

Reduces high-velocity compressor discharge air to increase pressure at a slower velocity.