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Electro-mechanical fuel control:
The start fuel valve and ignition are energised as soon as rotation (3%) is sensed by an Electronic Sequence Unit (ESU). At 14% and with rising EGT the main fuel valve is opened. The acceleration rate is controlled by the acceleration schedule adjuster, however this is modified by the differential pressure regulator which uses compressor discharge pressure to vary the fuel flow to the engine. At 50% the starter cuts out. When the engine reaches 85% the start fuel valve closes and the ignition is de-energised. The engine governor then takes over and controls the engine to 100%. As the engine passes 95% plus 3 seconds, the max fuel valve energises open and bypasses the acceleration adjuster and full control of the engine is given to the governor. If the engine is shut down both the Main and Max fuel valves are closed.
The ESU has indicators that indicate which step of the start sequence the APU is at and the resets at 95% + 3sec to act as BITE indicators.
the amount of cold working metal can withstand is directly related to which properties? name two and also discuss the effect that cold working has upon these properties?
DIVERGENT DUCT A divergent duct widens out as the airflow progresses through it. At subsonic speeds the effect of this kind of duct is to decrease the velocity and increase the p
Thrust indication: Although rpm gauges give an indication of the rotational speed of the compressor, they do have one drawback. They do not normally indicate the thrust output
Q.6 Define powder-metallurgy. What are various important techniques for compacting of metal powders ? Ans. Powder metallurgy is a technique of producing metal powders and mak
What is Call Option? Calls give the client the right but not the responsibility to buy a given variety of the actual resource, at a given cost on or before a given upcoming time
Engine lubrication systems There are basically two types of lubrication system at present in use in gas turbine engines:- a) Recirculatory. In this system, oil is distribut
relationship between z plane and s plane in bilinear transformation method
I am looking for a circuit similar to a schmitt trigger which use a varying capacitive input and provided a varying frequency output.
Flow through axial-flow turbo machine rotors can often be assumed axisymmetric i.e. velocity components do not change around the rotor circumference either at inlet or at outlet. N
5. From the following details you are required to make an assessment of the average amount of working capital requirement of Hindustan Ltd. Particulars Average period of credit E
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