Wikibooks

Jet Propulsion/Rotors

< Jet Propulsion
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The moving parts of the jet engine. The turbomachinery blades are mounted on a number of Rotors.


disks

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The disks provide structural fixing and resist the radial and axial forces generated by the airfoils in the fans. compressors, turbines.

Functional requirements

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Disk Mechanics

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Numerical Design

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Example: 600m/s Tip speed turbine at 200 C

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Centrifugal compressors

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Axial compressor durms and stiffeners

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Fan

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Blade-off failure analysis

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Bird Impact

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Fatigue

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Disk fracture

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Clearance control

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shafts

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Shafts connect the functional parts and transfer forces from turbines to fans and compressors and to bearings.

Torque

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Thrust

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Whirling

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Gyroscopic effects

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Multi shaft Dynamics

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Materials, Manufacturing and Assembly

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bearings

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The rotors are supported on bearings.

Functional requirements

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Loading, Overloading, service life, lubrication

Plain bearings

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Roller and ball bearings

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Air bearings

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Thrust bearings

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Bearing lubrication and cooling

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Seals

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The pressure differentials between different rotating parts are maintained by seals.

Dynamic seals

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Labyrinth Seals

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Brush seals

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Gas Pistons

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Engine force balance

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Takeoff

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Cruise

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