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

Composite materials - notation of axes, Notation for Body Axes The stan...

Notation for Body Axes The standard notation for the body axis sytem for aircraft dynamics. This sectionexplains the significance of the term body axis and develops the non-lin

Modified accelerated cost recovery system , Modified Accelerated Cost Recov...

Modified Accelerated Cost Recovery System (MACRS) Although SLN is the most commonly used depreciation method in the U.S. for purpose of financial reporting, MACRS is the only

Sinking fund depreciation method in economical engineering, Sinking Fund De...

Sinking Fund Depreciation Method Prior to World War II little attention was given to depreciation, and some business actually established savings accounts in which uniform annu

Pressure relief valve - aircraft engine, PRESSURE RELIEF VALVE The pres...

PRESSURE RELIEF VALVE The pressure relief valve shown in the figure. controls the oil pressure at the pre-set value demanded by the system. The valve is normally integral with

Java, 2. Differentiate between stream oriented and data gram oriented socke...

2. Differentiate between stream oriented and data gram oriented socket in java?

Blasting, Students are to undertake a tunnel blast design for the following...

Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a granite with a UCS of 300 MPa • Drill hole diameter is

Multi-threading problem in operating system, multi-threading problem in ope...

multi-threading problem in operating system 9. With multi-threading, each thread has its own value for the program counter, its own register save area, and its own stack, but all t

Flow at low mach number and zero incidence about m6 wing, Flow at low Mach ...

Flow at low Mach number and zero incidence about M6 wing Results from FP were obtained corresponding to M ∞ = 0.2 and a = 0 and, as noted, with the input files generated by FP

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