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What type of landing gear moves into the fuselage to reduce drag?
Wheeled landing gear is the most common with skis or floats needed to operate from snow/ice/water and skids for vertical operation on land. Faster aircraft have retractable undercarriages, which fold away during flight to reduce drag.
What are the two common types of landing gear retraction systems?
Landing gear usually comes in three basic wheel arrangements: conventional, tandem and tricycle-type. Beyond this, landing gear is then classified as either fixed or retractable. Fixed landing gear hangs underneath an aircraft during flight, whereas retractable landing gear is stowed inside an aircraft during flight.
How does a retractable landing gear work on an airplane?
Select the gear handle up, sense the slight change in aerodynamics, hear the retraction mechanism working away, and, finally, feel that solid thunk as the wheels land home in the wells. As the airplane transitions from part tricycle to all bird, we seem to shed finally the equipment needed only on the ground.
Why is the main landing gear tilted during the landing?
Many years ago the Airbus A300 suffered many return to lands in cold weather when the gear would not retract. This was eventually traced to the undercarriage remaining in the rotation tilt position due to cold hydraulic fluid, thereby not moving to the retraction position! The gear is tilted to fit into the wheel well.
Why do you need a squat switch for a retractable landing gear?
The purpose of the squat switch is to keep someone from retracting the gear until the airplane is off the ground. Where it is not feasible to employ a squat switch, some systems use airspeed sensors. Because there’s so much more to a retractable system than for a fixed setup]
Why is there a difference between nosegear retraction?
For both main and nose landing gear the main and really only consideration is where they can make space for the gear (there is no standard direction for retracting the main landing gear either; the Tu-154 retracts main gear rearwards into the anti-shock body ).