Pitot-Static System Flashcards
What does the Airspeed Indicator (ASI) measure?
Difference between ram air pressure in pitot tube and ambient pressure in static port
What device does the altimeter use to compare air pressure?
Aneroid barometer
What is the standard altimeter setting above 18,000 feet?
29.92” Hg
What errors is the altimeter susceptible to?
Temperature errors
Fill in the blank: High to low, look out _______.
below
What does the Vertical Speed Indicator (VSI) show?
Rate of climb
How does the VSI create a lag between indicated and actual rate?
Using a calibrated leak within the unit’s pressure chambers
What happens when the front of the pitot tube is blocked and the static port is clear?
Reads zero
What is the result when the front and drain of the pitot tube are blocked but the static port is clear?
Increases with altitude
What occurs with our airspeed when the pitot tube is clear and the static port is blocked? What happens to our altitude?
Decreases with altitude
What happens to the VSI when it is frozen in place?
Reads zero