INSTRUMENT SYSTEMS 11.5.1 Flashcards
Which flight deck indications occur if the pitot tubes are completely blocked?
The airspeed indicators react like altimeters
Which parameter has the greatest effect on the Static Source Error (SSE)?
Mach number
Concerning pitot/static systems, what happens if there is an ingress of water and the traps are already full?
In the digital ADC, the same transducer type is used for static and pitot pressure
An aircraft is on the ground and the altimeter is set to QNH pressure. What height is displayed?
Airport elevation
Which statement is correct about ADIRU?
The ADIRU has no pressure transducers, but the computational part of a DADC and IRU are integrated
Why does a vertical gyro require an erection system?
To ensure the gyro axis is vertical with reference to the surface of the earth
You fly from Cardiff, which has an actual pressure of 1030hPa, to Edinburgh at indicated altitude of 1000ft. What is your true altitude over Edinburgh when the sea level pressure is 1025hPa?
1360ft
Which statement is true concerning ADC data calculations?
The analogue ADC calculates all outputs in 3 modules at the same time
What does the slaving annunciation of a compass system indicate?
The difference between flux valve heading and the heading indication
Which statement is correct about compass compensation?
The deviation is recorded on the ground during a 360° turn
Which components are used to measure the motions along the aircraft axes?
Accelerometers
What is the purpose of the stick shaker?
To simulate the effect of a real stall in the flight controls
How does the stick shaker move the control column?
A motor on the control column causes it to vibrate
What is deviation?
It is the angle between magnetic north and compass north
What is the function of the SSEC circuit in an ADC?
The SSEC carries out a temperature compensation for the Mach module
