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Worksheets6320 Eng Start, Control and Fuel Systems Revision 2
Total questions: 10
Worksheet time: 7mins
Which of the following inputs would input information into the EECU?
Nf Trim
Aircraft Inputs
Overspeed Channel
Fuel Shut Off Valve
Power Turbine Speed
FADEC stands for
Fixed Authority Digital Electronic Control
Full Authority Digital Electrical Control
Full Authority Digital Electronic Control
Full Authority Dialed Electronic Control
With reference to the functions of an EECU. Select one or more of the following statements
A Contingency Enable switch on the collective lever to increase the limits on all three engines simultaneously for emergency use
Keeps the engines torque matched by sharing torque information with the other EECU’s.
Controls the rate of acceleration of the engine and rotor speed when the engine condition switch is selected from GI to FLIGHT.
Each EECU has two identical control channels designated channel A and channel B. Both channels are equally capable of engine control.
Which of the following sensors are used to input Engine information into the ECU.
Select one or more from the following
Engine Torque
Nf trim
Control channel selection A/B
Gas turbine speed (Ng)
Ambient air pressure
With reference to than ECU which of the following statements are correct?
During normal flight the FADEC balances the load of both engines by matching the torque of both engines within 5% of each other.
Keeps the engines torque matched by sharing torque information with the other ECU’s.
The FADEC’s response to changes in power demand is virtually instantaneous, resulting in minimal Nr droop (Rotor Speed).
Controls the rotor speed – default datum speed is 102%.
Turboshaft engines are most commonly used in applications that require?
Thrust to power military jet aircraft and airliners
A twin spool high or low speed by-pass engine
Shaft power to drive machinery instead of producing thrust
More power and greater efficiency engines at lower flying speeds
The basic components of a starter system are:
Select one or more of the following
Motor
Engine
Ignition System
Flying Controls
Control System
How can Fuel be measured in Airframe Fuel Tanks
Measuring by a dipstick level
Weighing the amount of that is put into a fuel tank
Using sound waves to measure the fuel in the tank
Measure the voltage drop across a variable resistor
With reference to aircraft fuel system requirements, which of the following statements are correct
Optimise the use of fuselage space to carry sufficient quantity of fuel for the aircraft role.
It is essential the fuel loads be delivered to or taken from the aircraft quickly and safely
keep the Centre of Gravity (CoG) within safe limits throughout the complete range of fuel usage.
refuel is often carried out via an individual fuel tank refuel point.
Select one or more of the correct safety precautions associated with the HEIU
Wait at least one second after switching off before touching any part of the system
Wait at least one minute after switching off before touching any part of the system
Always connect the LT lead before the HT lead when reconnecting the HEIU
Never touch an igniter unit output lead, or the igniter plug whilst the HEIU is operating
