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Flashcards in Vertical Speed Indicator Deck (15)
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1
Q

The _____ is an instrument that indicates the rate of change of altitude

Uses STATIC pressure and indicated both climb and descent (fpm or ft/min)

senses pressure from static port

A

VSI vertical Speed indicator

2
Q

The ______ inside of the VSI expands or contracts during changes in static pressure.

A

Diaphragm

3
Q

A _____ linkage TRANSLATES the expansion and contraction of the diaphragm into needle movement.

A

Mechanical

4
Q

The _______ compares the incoming static pressure to another older version still present within the system.

A

special air metering unit (SAMU)

5
Q

The _______ functions as a CALIBRATED LEAK ASSEMBLY designed to RESTRICT (slow down) the flow of air pressure INTO or OUT of the instrument case.

A

(SAMU) special air metering unit

6
Q

________ receives INCREASED pressure during a descent.

Case still holds the older and lesser pressure.

A

Capsule

7
Q

Capsule receives INCREASED pressure during a descent.

______ still holds the older and lesser pressure.

A

Case

8
Q

Capsule receives decrease pressure during ______.

A

Climb

9
Q

Case still holds the older and higher pressure during ______.

A

Climb

10
Q

The VSI relies solely on _______ changes to indicate vertical speed of the aircraft

This can result in lags between the start of the actual climb/descent of the aircraft and the indication shown on the VSI

A

static pressure

11
Q

What is developed to reduce the lag?

A

Instantaneous Vertical Speed Indicator (IVSI)

12
Q

IVSI has and additional unit called ________ which is designed to CREATE a more RAPID DIFFERENTIAL PRESSURE effect at the initiation of a climb or descent

A

accelerometer unit

13
Q

Accelerometer response decays after a few seconds, By this time the change in actual static pressure becomes _______.

A

Effective

14
Q

If diaphragm expands, you are _______.

A

descending

15
Q

If diaphragm shrinks, you are _______.

A

climbing