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Questions and Answers
What mechanism holds the landing gears in the retracted position during normal flight?
What occurs when the landing gear control lever is in the off position?
At what airspeed does the safety valve close to isolate the hydraulics from the landing gear?
Which of the following statements is true regarding hydraulic pressure during normal flight?
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What happens in an electrical system when there is no lever off position?
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Study Notes
Landing Gear Isolation
- During normal flight, landing gears on most aircraft are isolated from hydraulic pressure
- A mechanical locking system (e.g., an uplock hook) keeps the landing gears retracted
- Aircraft with three-position landing gear control levers isolate the gears from the hydraulic system when the lever is moved to the "off" position
- In electrically controlled systems without an "off" position, hydraulic supply is automatically shut off when airspeed reaches approximately 250 knots
- A safety valve closes at this airspeed, cutting off hydraulic supply to the selector valves
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Description
Test your knowledge on the mechanics of landing gear isolation in aircraft. This quiz covers the hydraulic systems, mechanical locking, and electrical controls involved in landing gear operation during flight. Ensure you understand how these systems work to maintain safety and functionality.
