In a barometric type Instantaneous Vertical Speed Indicator (IVSI), what is used to quickly respond to altitude changes and provide instant climb/descent indications?

Question

Accepted Answer

An accelerometer to temporarily change the pressure in the capsule.

Answer

Information from an air data inertial reference system.

Answer

An accelerometer mechanically linked to the capsule, to expand it faster.

Answer

A piston to temporarily change the diameter of the metering unit.

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In a barometric type Instantaneous Vertical Speed Indicator (IVSI), what is used...

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