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

CRO, different types of switches used in CRO

different types of switches used in CRO

Illustrate flat plate collectors. Describe liquid fl, Illustrate flat plate...

Illustrate flat plate collectors. Describe liquid flat plate collector with relevant diagram.

Airflow control system principles-aircraft engine, Airflow control system p...

Airflow control system principles: For any given engine there is only one set of conditions, mass flow, pressure ratio and rpm, at which all the compressor components are opera

#titleMetrics.., Suppose you are managing a software-development project fo...

Suppose you are managing a software-development project for which reliability is a major concern. A continual stream of anomalies is discovered in the software during the testing p

Basic engine design considerations, BASIC ENGINE DESIGN CONSIDERATIONS ...

BASIC ENGINE DESIGN CONSIDERATIONS Effect of engine size: The two parameters involved are the diameter, d and stroke, L of the engine. The effect of doubling each of this

Dischage rate, stuck on a project that requires 5 outputs with 6 inputs and...

stuck on a project that requires 5 outputs with 6 inputs and all formulas

Naval architecture and marine engineering, i have a coursework for finite e...

i have a coursework for finite element analysis of marine structure and i need help to solve it

Aerodynamics-influence on transition, Influence on transition Reynold...

Influence on transition Reynolds number - relates importance of viscousforces (relative to inertia) Lower Re - molecular diffusion more important; disturbances damped out

Architectural Design and Drawing, how can I improve my G+4 apartment with r...

how can I improve my G+4 apartment with rendering with pen and ink

Ubiquitous networks, Ubiquitous network applications are generally designed...

Ubiquitous network applications are generally designed for a whole network. This notion should be reflected in the way a network is programmed. We believe that providing abstractio

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