Pitot Static System Flashcards
What is atmospheric pressure
The force exerted by the weight of a column of air
What is standard sea level pressure in inches of mercury?
29.92
What is standard sea level temperature in degrees Celsius?
15°C
What is the standard temperature lapse rate?
2°C per 1,000 ft
Define impact pressure.
Static pressure plus dynamic pressure
Define static pressure.
Ambient pressure
Name and define the three types of airspeed
Indicated - read from the dial on the face of the instrument
Calibrated - IAS corrected for instrument and position error
True - CAS corrected for density error
Name and explain the three errors in the airspeed indicator
Installation - misalignment of the pitot tube with the relative wind and position of the static vents
Density - caused by pressure and temperature changes
Instrument - caused by friction in the instrument
Define altimeter setting
Station pressure corrected to MSL
Why is an altimeter setting necessary?
To correct for pressure changes
What is the maximum allowable error in the altimeter?
+- 75 feet
Define true airspeed
CAS corrected for density error
