Apu starting sequence in aircraft , Other Engineering

Assignment Help:

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


Related Discussions:- Apu starting sequence in aircraft

Gas turbines, factors affecting engine performance

factors affecting engine performance

Thrust reversal - aircraft design, Thrust reversal: Thrust reversal is ...

Thrust reversal: Thrust reversal is a means of reducing the landing run of an aircraft without excessive use of wheel brakes or the use of braking parachutes.  On a propeller d

Electronic apu fuel control system in aircraft , Electronic APU fuel contro...

Electronic APU fuel control System in Aircraft : Electronic fuel control emulates the mechanical system, however it provides control in a slightly different way. The electronic

Numericalle.., The Stefan-Boltzmann law can be employed to estimate the rat...

The Stefan-Boltzmann law can be employed to estimate the rate of radiation of energy H from a surface of copper sphere with radius = 0.15 ±0.01 m, as in H=AesT^4 where H is in watt

Output characteristics , OUTPUT CHARACTERISTICS: Figure shows a "Common...

OUTPUT CHARACTERISTICS: Figure shows a "Common Emitter" amplifier stage. Common Emitter Amplifier Stage With no base/emitter bias applied, there will be no collector

Structural engineering question, I have a 30'' simple span beam, braced at ...

I have a 30'' simple span beam, braced at the supports only. Uniform load is 1200 plf. I need deflection limited to L/400. What size steel beam do I need?

PLC, True or False, In a PLC system, there is a physical connection between...

True or False, In a PLC system, there is a physical connection between field input devices and output devices.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd