Vertical Speed Indicator | IVSI

Question 1

IVSI stands for ___ VSI

Answer 1

Instantaneous

Question 2

It uses ___ accelerometers, connected to the same static line, to reduce lag errors.

Answer 2

two

Question 3

The accelerometers are small ___ with weights inside, held in balance by springs and their own mass.

Answer 3

cyclinders

Question 4

The weights are centralised when stabilised in the climb/descent, but when levelling, they act in ___ direction to sharply reduce the instrument indications by puffing air into the appropriate places.

Answer 4

opposing

Question 5

When returning to level flight from large angles of bank, the IVSI will initially show a ___

Answer 5

climb

Question 6

If a turn with a large angle of bank is maintained, the IVSI will stabilise to zero, then indicate a ___ on rollout

Answer 6

descent

Question 7

IVSIs should not be relied upon while initiating or ending turns at bank angles of more than __ degrees

Answer 7

40