6320 Eng Start, Control and Fuel Systems Revision 2

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