Flight instruments Flashcards
(23 cards)
What happens to VSI, ASI, ALT when static port blocked?
VSI - return to/stay at 0
ASI - under-read more as you climb
over-read as you descend
ALT - stop moving
what happens to ASI if pitot tube is blocked?
climb = airspeed increase
descent = airspeed decrease
what is indicated altitude
altitude read off dial
what is pressure altitude
altitude when set to 29.92
true altitude
exact height above mean sea level
density altitude
pressure altitude corrected for nonstandard temp
compass variation
difference between true and magnetic north (isogonic lines)
compass deviation
variation of compass reading inside vs outside plane
northerly turning error
north lags, south leads
acceleration and deceleration errors
EWANDS
East and West headings - acceleration north, deceleration south
What do RMI and HSI use?
Radio magnetic indicator
horizontal situation indicator
gyro-magnetic compass
mechanical friction (heading indicator)
precession caused by bearing friction
how much greater is TAS than IAS per 1,000ft?
2%
ASI bottom of green arc
clean stall speed, power idle
bottom of white arc ASI
idle power full flaps stall speed
if static port blocked VSI will
return to 0
how to find angle bank for rate 1 turn
(TAS/10) + 7
what does a turn and bank indicator show
yaw
what does a turn coordinator show
roll and yaw
why does heading indicator need to be reset
mechanical precession
gyroscopic precession is caused by
the Earth’s rotation
what is skidding turn
too little wing down for rate of turn
what causes left turning tendency during takeoff roll
gyroscopic precession and p-factor
