Pitot-Static System Flashcards

1
Q

What does the Airspeed Indicator (ASI) measure?

A

Difference between ram air pressure in pitot tube and ambient pressure in static port

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2
Q

What device does the altimeter use to compare air pressure?

A

Aneroid barometer

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3
Q

What is the standard altimeter setting above 18,000 feet?

A

29.92” Hg

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4
Q

What errors is the altimeter susceptible to?

A

Temperature errors

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5
Q

Fill in the blank: High to low, look out _______.

A

below

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6
Q

What does the Vertical Speed Indicator (VSI) show?

A

Rate of climb

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7
Q

How does the VSI create a lag between indicated and actual rate?

A

Using a calibrated leak within the unit’s pressure chambers

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8
Q

What happens when the front of the pitot tube is blocked and the static port is clear?

A

Reads zero

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9
Q

What is the result when the front and drain of the pitot tube are blocked but the static port is clear?

A

Increases with altitude

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10
Q

What occurs with our airspeed when the pitot tube is clear and the static port is blocked? What happens to our altitude?

A

Decreases with altitude

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11
Q

What happens to the VSI when it is frozen in place?

A

Reads zero

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