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Jet Engines Engine Review Back to School – Spring Break is Over!

Jet Engines Engine Review

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Jet Engines Engine Review. Back to School – Spring Break is Over!. Overview. Basic Engines Scientific Terms Reciprocating Engines Laws of Physics Jet Engines How Jet Engines Operate Types of Jet Engines Reversers and Suppressors. FLIGHT POWER. Objectives - PowerPoint PPT Presentation

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Page 1: Jet Engines Engine Review

Jet EnginesEngine Review

Back to School – Spring Break is Over!

Page 2: Jet Engines Engine Review

OverviewBasic Engines

Scientific Terms

Reciprocating Engines

Laws of Physics

Jet Engines

How Jet Engines Operate

Types of Jet Engines

Reversers and Suppressors

Page 3: Jet Engines Engine Review

FLIGHT POWER

Objectives• Understand Functions in the Jet

Engine Basic Sections• Know Gas Turbine Engine Basic

System Parts

Page 4: Jet Engines Engine Review

Gas Turbine Engines

Page 5: Jet Engines Engine Review

Jet Engines Suspicion at first

Acceptance

Page 6: Jet Engines Engine Review

How Jet Engines Operate

Compared to reciprocating engines, the theoretical workings of the jet engine are simple.

Page 7: Jet Engines Engine Review

Turbojet Engines Most widely used jet engine in the world Same basic operational sequence Air enters through the intake section Goes through the mechanical compressor Forced into the combustion chamber, mixes with fuel, and burns Escapes out through the exhaust nozzle = THRUST

Page 8: Jet Engines Engine Review

Advantages of Turbine Engines Vibration stress is relieved Engine is simpler Cooling is less complicated

Disadvantages of Turbine Engines High fuel consumption Poor performance at low-power setting, low speeds and low altitudes

Page 9: Jet Engines Engine Review

ThrustPower of a jet engine is expressed

in pounds of thrust

Thrust = Weight of air x acceleration

Page 10: Jet Engines Engine Review

How Jet Engines Operate

Page 11: Jet Engines Engine Review

Turbojet Engines Parts of Turbojet Engines

IntakeCompressor Combustion Chamber

Compressor

Intake Combustor

Page 12: Jet Engines Engine Review

How Jet Engines OperateCompressor

Page 13: Jet Engines Engine Review

Turbojet Engines Parts of Turbojet Engines

Turbine Section Exhaust Section

AfterburnerNozzle Turbine Nozzle

Augmentor

Page 14: Jet Engines Engine Review

How Jet Engines OperateTurbine

Page 15: Jet Engines Engine Review

How Jet Engines Operate

Page 16: Jet Engines Engine Review

SummaryBasic Engines

Scientific Terms

Reciprocating Engines

Laws of Physics

Jet Engines

How Jet Engines Operate

Types of Jet Engines

Reversers and Suppressors

Page 17: Jet Engines Engine Review

•Ramjet Engines

•Turbo Fan

•Turbo Prop

•Turbo Shaft

Types of Jet Engines

Page 18: Jet Engines Engine Review

Ramjet Engines Simplest Jet EngineContains no moving parts Fuel is injected into the airstream and is

ignited by a spark

Will not function until enough air is coming through the intake to create a high- pressure flow

Theoretically has no maximum speed

Types of Jet Engines

Page 19: Jet Engines Engine Review

Turbojet Engines Types of Turbojet Engines

Centrifugal-Flow Engine

Axial-Flow Engine

Page 20: Jet Engines Engine Review

Turbofan Engines Becoming the dominant engineFuel-efficient4X amount of Air pulled in

Page 21: Jet Engines Engine Review

Turboprop Engines• Combines the best features of

turbojet and propeller aircraft• Efficient at low altitudes and slow speeds

Page 22: Jet Engines Engine Review

Turboshaft Engines For use in Helicopters

Page 23: Jet Engines Engine Review

How Jet Engines Operate

Page 24: Jet Engines Engine Review

How Jet Engines Operate

http://www.grc.nasa.gov/WWW/K-12/airplane/turbparts.html

Page 25: Jet Engines Engine Review

Uses the force of hot flowing gases striking a turbine to produce thrustKnow the four basic typesKnow the partsKnow what and afterburner is:

fuel injected into exhaust under pressure – velocity increased

Turbine Engines - Summary