Instrumentation

Question 1

Total Air Temp Formula

Answer 1

TAT = SAT x (1 + 0.2KM^2)

Temp in kelvin!

Question 2

EMF produced by thermocouple formula

Answer 2

E = K x Th

Question 3

Altimeter required accuracy

Answer 3

+/- 60ft for test range up to 30,000ft
+/- 80ft for test range up to 50,000ft

Question 4

Density altitude formula

Answer 4

Density Altitude = Pressure Altitude + (120 x ISAdev)

Question 5

Pitot blockage in descent.
ASI will?

Answer 5

Under-read

PuD

Question 6

Static port blockage in descent.
ASI will?

Answer 6

Over-read

SoD

Question 7

CAS corrected for compressibility is…

Answer 7

EAS (equivalent air speed)

Question 8

Compressibility becomes significant above…

Answer 8

200 KT CAS and 10,000 ft

Question 9

True Airspeed is…

Answer 9

Equivalent Air Speed corrected for air density

Question 10

Airspeed correction pneumonic

Answer 10

ICET

PCD

Question 11

Local speed of sound formula

Answer 11

LSS = 38.94*sqrt(T)

T in kelvin

Question 12

Relationship between Mach number, true, equivalent and calibrated air speed

Answer 12

E C T M graph

Question 13

Climb or descent through an isothermal layer

Answer 13

Both true airspeed and Mach number remain constant

Question 14

Climb or descent through an inversion layer

Answer 14

True airspeed and Mach number relationship is swapped/inverted