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
Difference between income & expenditure statement P&L is to be ready by the Company or Dealing Origination which evolved in Dealing of any commodity or manufacturing of completed e

hOW LONG WILL IT TAKE AN AMOUNT TO DOUBLE IF THE INTEREST RATE IS 7% P.A. COMPOUNDED ANNUALLY


Disadvantage of shunt diode clipper

how to use mean and standard deviation with matlab?

NAND Gate; When constructing a NAND gate using transistors as the switching devices, the output often represents the 'inversion' of the "AND" gate. Figure 4 shows an example o

Summing amplifier: As the title implies, this is an adding device.  The circuit can take any number of voltage inputs, and the output voltage is simply the sum of these inputs.

Q. Explain the following with reference to deformation of metals:                         (1) Preferred orientation                         (2) Elastic after effect

THE IDEAL OPERATIONAL AMPLIFIER Although the characteristics of an ideal operational amplifier are unattainable, modern integrated circuit types can provide an extremely close

Aviation legislation - MAXIMUM TAKE-OFF MASS: Aircraft companies intending to manufacture a new design must have approval under Chapter A8-1 of BCAR or JAR-21 (Certification Pr