pitot/static

Question 1

what are the pitot static instruments

Answer 1

ALTIMETER, airspeed and vertical speed indicator

Question 2

what is the pitot tube

Answer 2

it’s is the instrument on the wing of a plane that has a pitot mast & ram air. it measures the incoming air pressure

Question 3

what instruments work off the pitot tube

Answer 3

airspeed indicator

Question 4

what is the static port

Answer 4

it’s on the side of the plane and it takes in the SURROUNDING/ AMBIENT air around the plane

Question 5

what instruments work off the static port

Answer 5

ALTIMETER, airspeed and vertical speed indicator

Question 6

how does the altimeter work (steam gauges)

Answer 6

aneroid barometer

a stack of sealed android wafers expand and contract with changes in atmospheric pressure received from the

a mechanical linkage between the aneroid and the display translates the sensed pressure to an altitude indication

Question 7

how does the altimeter work overall

Answer 7

it shows the height above a given PRESSURE LEVEL, based on STANDARD PRESSURE lapse rate of 1000’ per inch of mercury

Question 8

what setting should the altimeter be set at BELOW 18,000’ MSL

Answer 8

regularly set to a station with in 100NM.

Question 9

what setting should the altimeter be set at ABOVE 18,000’ MSL

Answer 9

set to the standard sea level pressure of 29.92” Hg

Question 10

when should you use caution when using the altimeter

Answer 10

flying HIGH —> LOW pressure & HOT —> COLD temperatures

Question 11

what happens if you do not adjust the altimeter

Answer 11

altitude will indicate HIGHER and the pilot will fly lower then they desire

Question 12

what does the vsi indicate

Answer 12

the rate of climb in feet per minute (fpm)
AND
rate trend

Question 13

what lags does the vsi have

Answer 13

rate of climb has a 6-9 second lag
rate trend is immediate

Question 14

how does the vsi work in steam gauges

Answer 14

-a diaphragm inside the instrument connects directly to the static source
- the area outside the diaphragm also receives static pressure but via a calibrated leak ( a restricted leak)

• this configuration responds to static pressure change over time
• as the diaphragm expands or contracts, a mechanical linkage moves the pointer need to display current rate of climb to the pilot

Question 15

what is instantaneous vsi (ivsi)

Answer 15

it solves the lag issue with the addition of vertical accelerometers

Question 16

what is dynamic pressure (airspeed)

Answer 16

impact pressure (ram air) MINUS static pressure

Question 17

how does the airspeed indicator work (steam gauge)

Answer 17

a diaphragm in the instrument reduces fam air pressure from the pitot tube. the area outside the diaphragm is sealed and connected to the stuck port. a mechanical linkage converted the expansion and compression of ten diaphragm to airspeed shown on the display dial