Chapter 8: Powerplant Installation Flashcards

1
Q

what does nacelles do?

A

provide smooth aerodynamic flow with minimum drag, protected components on engine

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2
Q

what does nacelle consist of?

A

1) skin cowlings
2) firewall
3) engine mounts

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3
Q

engine accessibility reasons

A

1) troubleshooting
2) checking of engine oil level & FOD
3) remove/install components
4) adding oil

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4
Q

what does engine firewall do?

A

isolate location where fire takes place (protects components)

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5
Q

what does a pylon do?

A

transmit loads produced by engine and other loads (side, vertical, gyroscopic, moments)

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6
Q

what does pylon houses?

A

1) fuel
2) hydraulics
3) electrics
4) engine controls

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7
Q

what is the engine front mount designed to resist?

A

translational & rotational forces and moments

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8
Q

what is the engine rear mount designed and do?

A

transmit engine torque load, vertical loads, side loads to pylon, allow thermal growth on engine to move axially

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9
Q

purpose of vibration isolators

A

isolate APU/engine from structure to minimise 2 way transmission of vibration & shock between aircraft and engine

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10
Q

components that leak waste to engine drain mast

A

1) hydraulic pump
2) fuel control unit
3) pneumatic starter
4) fuel drain tank
5) oil tank scupper
6) electric generator
7) starter motor

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11
Q

factors affecting auto throttle system

A

1) flight level
2) flight phase
3) environmental conditions
4) altitude

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