Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Electronic APU fuel control System in Aircraft :
Electronic fuel control emulates the mechanical system, however it provides control in a slightly different way. The electronic Control Unit (ECU) monitors the APU speed and EGT continuously and also the low oil pressure switch.
During start the ECU knows the engine speed so will signal the fuel shut off valve to open at 8-10%. At the same time ignition is selected on and the light up will be sensed by the EGT system. The ECU then enters a timed acceleration schedule where EGT and speed are monitored by the ECU. The ECU deselects the starter at 50% and the ignition at 95%. Once up to speed the ECU keeps the engine at 100% and will monitor the EGT and speed to maintain operation throughout the operating envelope of the APU.The Fuel control unit mounted on the APU gearbox is much simpler than the mechanical FCU. It contains a fuel pump, an electronic servo valve and a pressure drop control valve ( [delta] P valve). The electrical shut of valve and the fuel flow divider are retained and work as they did in the mechanical system.
The ECU has Built In Test Equipment (BITE) indicators which will indicate why the APU shut down, however these do not retain the information if power is removed.
Pattern Practices : A pattern may be defined as a replica or fascimile model of the desired casting which, when packed or embedded in a appropriate moulding material, creates a ca
The various cementing materials are classified as follows. a) Argillaceous cementing materials b) Calcareous cementing materials c) Carbonaceous cementing materials Argillaceous Ma
The axial flow compressor: The axial flow compressor is by far the most popular type of compressor and, although it is more difficult to manufacture, it is a more efficient com
why alcoholic acidity is necessary?
assignment
FIRING ORDER If in multi cylinder engines, various cylinders are made to fire one after the other, interference between adjacent cylinders would occur, since these may have o
flip-flop
Specify the inner-loop gain such that the damping coefficient of the closed loop is equal to 0.4
Capital Budgeting Decisions The most important function of a finance manager is the efficient allocation of its capital. The investment decision of a firm is termed as capital budg
Which type of financing is appropriate to each firm caselet
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd