PPRuNe Forums - View Single Post - Nose gear lifting and parking brake.
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Old 26th Jan 2005, 23:48
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mono
 
Join Date: Feb 2002
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You guys have all missed Seldom fixit's subtle comment.

There are lots of a/c out there with double, triple or more axle bogies. If the wheel rotated about it's contact patch then a/c with multiple axle bogies would have a problem.As usual the answer is a bit more complicated.

On single axle bogies yes, the wheel will rotate slightly relative to the ground not the a/c.

On multiple axle bogies, the bogie simply tilts slightly.

However, as the a/c is lifted vertically in effect it is pulled slightly forward. The forces acting on the wheel/tyre are minimal when compared to the same forces while braking.

I would always keep the brake on just in case.

Edited for clarification.
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