Speed control in aircraft engine, Other Engineering

Speed control in Aircraft Engine:

Because the APU is designed to run at a constant rpm, some means must be provided to control this speed. Such a control device is known as a speed or rpm governor.

850_speed control.png

The speed governor is linked mechanically to the APU drive. As speed increases above 95%, the bob weights start to move outwards and begin to by-pass the fuel back to the inlet of the pump and as speed increases up to 100% rpm, it causes sufficient fuel to be by-passed by the governor, to maintain this rpm. Increase or decrease in the speed setting is achieved by adjustment of the governor spring. Note that at speeds below 95% rpm the by-pass valve controls the acceleration up to a maximum speed of 95% rpm.

397_speed control1.png

Posted Date: 9/12/2012 7:08:21 AM | Location : United States







Related Discussions:- Speed control in aircraft engine, Assignment Help, Ask Question on Speed control in aircraft engine, Get Answer, Expert's Help, Speed control in aircraft engine Discussions

Write discussion on Speed control in aircraft engine
Your posts are moderated
Related Questions
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


Engine speed indicators: All engines have their rotational speed (R.P.M.) indicated. On a twin or triple-spool engine, the high pressure assembly speed is always indicated; in

Survey of Manufacturing : A usable product is manufactured in the following sequence. Ore from Earth → Reducing processes → Molten metal → Commercial Castings → Ingots → Furth


how to get guidance of projects in electrical engineering?

Question: (a) Cellular systems are based on two main types of multiplexing, what are those two types of multiplexing? Explain how they are used to improve channel allocation in

Assembly buildings: Assembly buildings are high life risk premises.  People often very densely occupy such buildings and they do so in large numbers so they must be given good

Engine fuel control systems: The thrust of a turbo jet is controlled by varying the amount of fuel that is burnt in the combustion system and in order to operate the safe tempe