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What are landing gear doors?
The landing gears and landing gear doors are operated and controlled electrically and hydraulically. In abnormal operation, the landing gear can be extended by gravity. An Auxiliary Ground Door Opening System allows on-ground access to each landing gear bay for maintenance purposes.
How does the landing gear work?
The purpose of the landing gear in an aircraft is to provide a suspension system during taxi, take-off and landing. It is designed to absorb and dissipate the kinetic energy of landing impact, thereby reducing the impact loads transmitted to the airframe.
What holds the landing gear system in the up position after you raise the gear handle in flight?
Hydraulic pressure holds the gear up, so there are no uplocks as on some aircraft. The landing gear retracts or extends in about seven seconds.
Why does the 737 not have landing gear doors?
Since the plane was deliberately designed to be low, there wasn’t enough space under the aircraft to accommodate wheel well doors for the main landing gear. If the 737 were to be equipped with landing gear bay doors, and they fail to close up before landing, things wouldn’t be good when the plane touches down.
What is the force of the landing gear?
At the bottom of the landing gear stroke the vertical velocity, Vs = 0 and K.E. = 0 and the force that the tires and landing gear leg exert upward on the aircraft is, F = X K (6) For a linear spring constant K, the energy that has been absorbed by the landing gear is,
How are main landing gear doors designed to work?
Door designed with intentional warp to provide stress against latches, to prevent rattling. Door can restrain landing gear that is inadvertently deployed yet can be opened if door hydraulics fail. Five of six stringers cobonded with door skin for maximum weight savings.
Where does the shock absorption of landing gear occur?
The shock absorption of the landing shock occurs just as the tires touch the ground and continues as the tire and landing gear leg deflect and absorb the energy of the vertical sink velocity, Vs, of the landing gyroplane. A simplified view of the two conditions of landing are shown in figure 2.
How can you tell the landing gear on a gyroplane?
This analysis is that means. The main landing gears on a gyroplane may be viewed by looking at the aircraft from the front as shown in figure 1.