VSI Indicator

Question 1

What does the VSI do?

Answer 1

Shows how quickly the airplane is climbing or descending in feet per minute

Detects a rate of pressure change .

Has a 8 sec lag

don’t use to maintain level flight ( use altimeter to keep continuous flight level )

Question 2

Parts inside the VSI

Answer 2

Calibrated leak- air comes in the wafer , the leak calibrates the air the change more slowly. That’s why we can have a 8 sec delay.

Direct static pressure

Diaphragm

Uses aneroid waifers just 1

Question 3

What if the pitot gets blocked

Answer 3

We can turn on pitot heat if its ice

Can look for bugs or mud

Check tiny drain hole preflight

The VSI wont work

Question 4

What if the static vents become clogged

Answer 4

The airspeed indicator , altimeter , and vertical speed indicator will become inoperative .

The VSi will show level flight and altimeter will be frozen at the altitude it got blocked at.

The airspeed will act like an altimeter , will show an increase in airspeed in a climb , it will go down with descent.

Question 5

If the pitot tube and outside static vents become clogged, the….

Answer 5

the altimeter , airspeed indicator , and vertical speed indicator will be affected .

Question 6

If the static port is blocked you can pull a ?

Answer 6

Static port knob - wont be completely accurate but better than nothing

If you don’t have that , you can crack the glass to create a back up on your VSI