Vertical Speed Indicator Flashcards
1
Q
How does the Vertica-speed Indicator work?
A
In the VSI, changing pressures expand or contract a diaphram connected to the indicating needle through gears and levers.
The VSI is connected to the static pressure line through a calibrated leak; it measures different pressures.
2
Q
What are the limitations of the Vertical-Speed Indicator?
A
It is not accurate until the aircraft is stabilized.
Sudden or abrupt changes in the aircraft attitude will cause erroneous instrument readings as airflow fluctuates over the static port.
