Starlionblue wrote:For the nose gear, it doesn't matter, and it has no brakes anyway, so there's a snubber that stops the wheels as it comes in. You can often hear this as a little screech sound in the cockpit.
gregorygoodwin wrote:.... if the main gear has multiple axles on the bogie beam, such as a 757, 767, etc, the bogie must be centered upon gear retraction to go up into the gear well. This is done by a actuator on the bogie beam.
Not necessarily actively 'centered', the 767 I believe for example has no active bogie positioning other than a passive jack that returns the bogie to it's 'default' nose-down postion when in the air. This came up in a thread a few years ago concerning the 767 retraction dynamics and the necessary 'little door' on the wing top surface that opens & closes during the retraction sequence. Apparently, on the 767 there is no active bogie positioning - the forward sweep of the retraction axis allows alignment of the nose-down bogie into the wheel well.
DH106 wrote:Okay - I stand corrected, the 767 bogie is actively positioned during retraction?
In the previous thread I mentioned one poster stated that the gear retracts with the bogie in it's default nose-down position, with no active positioning for retraction.
fr8mech wrote:I guess it depends what “active positioning” means. Once the gear is off the ground, the bogie is automatically positioned at the correct angle to enter the wheel well. If the bogie is not in the proper position, the gear handle will not move from the down position.
kalvado wrote:If I remember correctly, A-380-800 doesn't have a full set of brakes on mains. How they handle the free axle?
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