Thrust PPL ground lesson 3 stage zero

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53 Terms

1
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pitot tubes measure altitude based on

air pressure difference

2
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atmospheric pressure (increases/decreases) with a decrease in altitude

Increases

3
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atmospheric pressure (increases/decreases) with an increase in temp

increases

4
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pitot tubes measures

ram air (velocity of relative wind)

5
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pitot ram air and static port are compared in the

air speed indicator

6
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VSI and altimeter only get

ambient pressure from static port

7
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static port

flush on side of fuselage to measure ambient pressure

8
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pitot static system is used by

Altimeter VSI ASI

9
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ASI works by

comparing ram air and static air

10
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ASI has a _____ that expands/contracts with_______

diaphragm, pressure

11
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ASI compares

ambient pressure and dynamic pressure

12
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Vs0

stall speed with flaps

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Vs1

stall speed clean

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this always happens before structural damage occurs

stalls

15
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Va range

98-113

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Max weight

2550

17
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Vx is best

angle

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Vy is best

climb

19
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IAS

indicated airspeed, what it reads

20
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CAS

calibrated airspeed, airspeed corrected for installation/instrument error (static port is on the wing, but it would be optimal if it were on the nose)

21
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TAS

true airspeed, CAS corrected for altitude/pressure, non-standard temp

22
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TAS (increases/decreases) with altitude

increases

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GS

groundspeed— TAS adjusted for wind

24
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in a headwind, true airspeed is _____than groundspeed

greater

25
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in a tailwind, true airspeed is ____ than groundspeed

lower

26
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IAS is (higher/lower) at a higher altitude, because there are fewer air molecules to enter the pitot tube. However, true airspeed is the ______

lower, same

27
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mach number is the ratio of the ____ to the ____

true airspeed, speed of sound

28
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the speed of sound is a ___________, therefore mach number changes

function of temperature

29
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altimeter Is affected by changes in _____

pressure

30
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altimeter only receives _____ from the static port

ambient pressure

31
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kollsman window

window where you set the pressure in the altimeter

32
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if you can’t get the altimeter setting, set it to

field elevation

33
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3 stacked aneroid wafers are set to a pressure of ____, but altimeter adjustments and the static port change it

29.92 Hg

34
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ISA

international standard atmosphere

at sea level

15C, 29.92 Hg

35
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Absolute altitude

actual feet AGL

36
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True altitude

feet above MSL

37
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Pressure altitude

distance above standard datum plane at 29.92hg

38
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Density altitude

pressure altitude corrected for non-standard pressure/temp

39
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high to low

look out below (reset your altimeter)

40
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VSI measures a _____ to give you your fpm changes

change in static pressure

41
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VSI gets (ambient/static pressure) from the static port

ambient

42
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VSI has a _____to allow the pressure to “update” via the _____ as you fly

calibrated leak, diaphragm

43
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if the pitot tube (ram air) is blocked,

airspeed drops to zero

44
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if both the pitot tube (ram air) and drain hole are blocked, then you only get air from the static port and the ASI acts like an

altimeter

45
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if the static port is blocked,

ASI: inaccurate

Altimeter: frozen

VSI: zero

Find alt static source

46
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gyroscopic principles operate on

rigidity in space (resists change to movement)

gyroscopic precession (tilting/turning in response to pressure)

47
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attitude and heading indicator are ____powered

vacuum

48
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heading indicator is/is not north seeking, so you need to reset it

is not

49
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turn coordinator Is ____powered

electrically

50
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magnetic compass has no frictional errors because it is

suspended in fluid

51
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magnetic compass errors

Variation

Deviation/dip—caused by metals/electrical fields, caused by magnet wanting to point north. greatest near the poles

Magnetic variation

Oscillation—combo of all errors

Northerly turning errors—NOSE

Acceleration—ANDS

52
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AD-AHRS

air data computer for PFD

Attitude indicator/accelerometer

HSI/magnetometers

Rate turn indicator and sensors

Turn coordination/inclinometers

53
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Air data computer calculates

altimeter tape/VSI