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

Explain critical path method and idea, Problem 1 Case Study - Developme...

Problem 1 Case Study - Development of a new sewage secondary treatment plant Context and location: Consideration is being given to the development of a new major sewage seco

Edgewise compression test on a sandwich structure , This test gives a basis...

This test gives a basis for evaluating the load-bearing capability of a sandwich structure when loaded in compression. The specimen should be at least 50 mm wide and the length sho

Neutral points of a bar magnet , Fix a drawing paper on a drawing board wit...

Fix a drawing paper on a drawing board with help of drawing pins. Place a magnetic needle on the drawing paper to identify geographical north and south poles. Mark north, sou

System architecture and design, The home work is to make an model based sys...

The home work is to make an model based system architecture for an electrical car. in Enterprise Architecture with SysMl language.

Engine indication systems in aircraft, Engine indication systems in Aircraf...

Engine indication systems in Aircraft: Engine indications are very important to the crew of a powered aircraft, as they indicate one of the primary parameters needed for flight

Casting alloys, Casting Alloys are -             (i) Permanent moulds...

Casting Alloys are -             (i) Permanent moulds are commonly used for the casting of grey iron, aluminum alloys and magnesium alloys.             (ii) Slush Casting

Casting methods, Special Casting Methods             1. Die casting : ...

Special Casting Methods             1. Die casting : Die casting is a permanent mould casting techniques in which molten metal is forced in the mould cavity under a pressure

Field effect transistors, FIELD EFFECT TRANSISTORS (FET) A field-effect...

FIELD EFFECT TRANSISTORS (FET) A field-effect transistor (FET) is a semiconductor device in which the current flowing through a conduction channel i.e. between two terminals ca

What is the difference between real money & nominal money?, What is the dif...

What is the difference between real money & nominal money? 1) Nominal cash is related to the measure of counting. Moderate figure is what is written on the bill. Whereas actual

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