Questions tagged [landing-gear]

The wheels of an airplane. Sometimes replaced by floats or skis.

3 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
155 views

What is the difference between a pressure switch, high-pressure control, and low-pressure control in a landing gear hydraulic system?

This is an Arrow II landing gear diagram. In the diagram, the high and low pressure controls look like check valves. The pressure switch is unclear. What are these three items, and what purpose ...
0
votes
0answers
119 views

What purpose of the thermal relief valve in PA-44?

In landing gear part, As I know, the valve will open to relieve pressure as a result of temp and pressure changes as airplane climbs or descends, but I do not know What purpose of the thermal relief ...
0
votes
0answers
188 views

How long does the gear extension/retraction takes on the ATR-42?

Which is typical time of landing gear extension in normal conditions ? I would like to know it especially for the ATR-42 but any other typical value is welcome ! Furthermore can you provide any link ...