Apu starting sequence in aircraft , Other Engineering

Apu starting sequence in aircraft :

In figure the APU control unit receives its power from the aircraft battery.

By moving the APU switch to ‘ON', power is provided to the intake door actuator and an LP fuel valve which starts to open. When they are both fully open, switches energise the starter system, igniters are energised and the APU accelerates with assistance from the starter motor to idle speed. The starter motor cuts out between 50 & 60%.

The fuel system controls the fuel flow during start. Once the engine is at idle (100%, lower if the APU is fitted with an idle power setting), the APU will be ready to load either electrically or pneumatically. This is indicated by a ‘Ready to Load' light or ‘APU Power Available ‘light coming 'ON'.

2290_apu starting sequence.png

Posted Date: 9/12/2012 7:36:01 AM | Location : United States







Related Discussions:- Apu starting sequence in aircraft , Assignment Help, Ask Question on Apu starting sequence in aircraft , Get Answer, Expert's Help, Apu starting sequence in aircraft Discussions

Write discussion on Apu starting sequence in aircraft
Your posts are moderated
Related Questions

Differentiator: With negative feedback applied through a resistor and the input signal through a capacitor, the circuit will perform the mathematical operation of differentiati

Pitot intakes: This intake is suitable for subsonic or low supersonic speeds. Examples, 707, 747, A300B, Tristar, etc. The intake is usually short and is very efficient becau

http://www.cramster.com/answers-apr-12/mechanical-engineering/engineering-mechanics-static_2386217.aspx?rec=0

process / description.. if I put A=1000 and B=0100 A>B gate will show output 1 and dose A

THE USER INTERFACE

Ask questioA wire rope used as a crane hoist rope has a mean life of 530 days. The wire rope predominantly fails in a wear-out mode caused by either corrosion, abrasive wear or fat

in which type of armature winding Equaliser ring dummy coils are used

how to decode arinc 429 words and send result to pc by rs232 bus

AAA has 1,000,000 shares of common stock trading at $20.00 per share. The company''s debt consists of 2,000 $1,000 par value 10-year 7.0% annual coupon bonds with semiannual paymen