Re: HS Trident/More weirdness

Date:         28 Jul 97 01:13:30 
From:         don@toyunix.zl2tnm.gen.nz (Don Stokes)
Organization: The Wolery
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Darren Rhodes <D.P.Rhodes@lboro.ac.uk> wrote:
>The description above is the correct layout of the undercarriage on a
>Trident. The undercarriage is also fairly unique in that to stow the 4
>wheels on a single main gear axle, the leg shortens and rotates
>through 90deg. so that the wheels occupy the minimum space possible.
>Of course the extra complexity added weight to the design - hence this
>approach hasn't been used since on civil aircraft.

Concorde also shortens its rather lanky gear prior to retraction.  The
main gear is the traditional two-axle variety, so it doesn't need to do
the rotation.

Question: how is the shortening done?  (Both on Concorde & Trident?)

-- don