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Mod 11 > 11.5.1 > Flashcards

11.5.1 Flashcards

1
Q

How much does pressure decrease at sea level

A

28hpa per 1000 feet

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2
Q

How much does temp decrease in troposphere

A

Minus 2 degrees per 1000 feet

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3
Q

Systems supplied by pitot static

A

Altimeter , ASI, VSI, air data computer

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4
Q

Which pitot tube supplies captain

A

Left hand side

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5
Q

Instruments using static pressure only

A

Altimeter , VSI

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6
Q

Instruments using static and pitot

A

ASI , Mach indicator

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7
Q

How are pitot tubes installed

A

So they are pointing into relative airflow

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8
Q

What are static probes

A

Small holes on either side of fuselage , senses pressure of still or static air

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9
Q

Purpose of air data module

A

Converts pitot or static pressure into digital output signals

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10
Q

What is an altimeter

A

A barometer that measures the absolute pressure of he air

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11
Q

QNH

A

Altitude

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12
Q

QFE

A

Height

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13
Q

QNE/STD

A

Flight level

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14
Q

Difference in height and altitude

A

Altitude is sea level , height is terrain

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15
Q

What is a vertical speed indicator

A

Rate of climb indicator , uses a bellows or pressure capsule similar to an altimeter

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16
Q

Operation of VSI

A

As aircraft climbs pressure inside capsule decreases

17
Q

Instantaneous VSI

A

Gives a faster reading

18
Q

Airspeed indicator

A

Is a differential pressure gauge that measures difference between pitot and static pressure

19
Q

True airspeed indicator

A

Uses airspeed capsule and a temperature sensor and an altitude bellows to give a more accurate reading

20
Q

Static air temp

A

Measures Un disturbed air around the aircraft

21
Q

Machmeter

A

When aircraft close to speed of sound a measurement is needed that compares speed of aircraft with speed of sound

22
Q

How is stall warning system operated

A

Electrically

Mod 11 (19 decks)

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