# Aircraft Structure Problem

grayworks
Hi I'm very new so I'm not sure if this is the best place to put this in. I've got a problem that I'm having trouble working out and any help would be great.

'A retracting nose wheel assembly is raised by the application of a torque T applied to link BC through a shaft at B. The wheel and arm AO have a combined mass of 50kg with a centre of mass at G. Find the value of T necessary to lift the wheel when D is directly under B at which position angle is 30degrees.

Cheers

#### Attachments

• picture1.jpg
12.8 KB · Views: 1,027

Staff Emeritus
The torque acts on a moment arm, and one must determine the necessary force at D (normal) the arm AO.

So the force/moment is applied at D, but that moment must be at least equal to the moment of wheel and arm AO. That information is given - "a combined mass of 50kg with a centre of mass at G."

This post belongs in the Engineering and Technology Homework Forum.

grayworks
k I've worked out the moment between A-G is 245Nm but I can't see how this relates to B-C

Staff Emeritus