Air, Atmosphere And Airspeed Flashcards
1
Q
Fluidity
A
Ability of a liquid or gas to flow
2
Q
Static pressure
A
Weight of air molecules exerting a force (per unit area)
3
Q
Dynamic pressure
A
Pressure of a fluid exerted on a body due to motion
4
Q
Dynamic pressure equation
A
Q = 0.5pV^2
5
Q
What is the ISA at MSL? (Reference density - p)
A
1.225kg/m3
6
Q
When relative density increases (p)…
A
TAS < IAS
7
Q
When relative density (p) decreases…
A
TAS > IAS
8
Q
When TAS doubles…
A
Dynamic pressure quadruples (TAS^2)
9
Q
Indicated airspeed (IAS)
A
- Directly read on ASI
- Causes instrument and positional errors due to Pitot tube
10
Q
Calibrated airspeed (CAS)
A
- Corrects instrument and position errors from IAS
11
Q
Equivalent airspeed (EAS)
A
- Fluids less than Mach 0.3 cannot be compressed
- Corrected from CAS for compressibilty
12
Q
True airspeed (TAS)
A
- Corrected from EAS for differences in density
