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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.
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A speed control system has an amplifier-motor-control element capable of maintaining a speed of 4000 rpm at the output shaft with no external load and an input of 8 mV to the ampli
occasionally we are getting black streaks in our powder coated parts. Does not seem to be related to paint contamination or cleaning prep. Has anyone else seen this or know what co
Why would an investor buy preferred stock? A buyer that wants the benefit potential of value but wants to reduce possibility would buy recommended inventory. The buyer would rec
list 10 major project topic in agricultural engineering
Sharpe Knife Company expects sales next year to be $1,500,000 if the economy is strong, $800,000if the economy is steady, and $500,000if the economy willb e strong, a 50 percent pr
The longitudinal and lateral states of the decoupled linear dynamics are distinct sets of variables. They are conveniently remembered by the flight-control engineer by visualising
Types of patterns : These depends upon many factors like the bulk of casting, type of moulding processes, number of castings required and the anticipated difficulty of moulding,
In spot welding, the parts to be joined are normally over lapped. The work piece are clamped between two water cooled copper electrodes. On the passage of a high transient current,
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