< Jet Propulsion

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


disks

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

Functional requirements

Disk Mechanics

Numerical Design

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

Centrifugal compressors

Axial compressor durms and stiffeners

Fan

Blade-off failure analysis

Bird Impact

Fatigue

Disk fracture

Clearance control

shafts

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

Torque

Thrust

Whirling

Gyroscopic effects

Multi shaft Dynamics

Materials, Manufacturing and Assembly

bearings

The rotors are supported on bearings.

Functional requirements

Loading, Overloading, service life, lubrication

Plain bearings

Roller and ball bearings

Air bearings

Thrust bearings

Bearing lubrication and cooling



Seals

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

Dynamic seals

Labyrinth Seals

Brush seals

Gas Pistons

Engine force balance

Takeoff

Cruise

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