Uplock
Support
Function and Design |
Installed Uplock Support
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In addition to supporting
the closed gear door, the uplock also has two emergency functions--
The box has to be
strong enough to support the weight of the landing gear, if the gear control system should
loose hydraulic pressure and the landing gear releases in the closed wheel well.
If there is a tire burst in the wheel
well, the support box has to be robust enough to resist damage and to retain function
after side, bending, and bursting loads.
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The mechanical requirements in the high stress areas of the
support are:
-- 50 ksi ultimate tensile strength, 40 ksi yield strength, and 5%
elongation
In other areas the
mechanical requirements are:
-- 45 ksi ultimate tensile strength, 36 ksi yield
strength, and 3% elongation.
These strength requirements have to
be met while minimizing weight. |
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