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Ultimately, with a standard instalation, the gear can be made to come
down by opening the "dump" valve equalizing pressure between the HI
and LO sides letting gravity and springs do the rest with only
friction to contend with. This, of course, requires intervention by the
pilot while he is ocupied with the chores of landing.
If the gear system had been doing what it is expected to do, this
distraction at a critical time would not be neecessary.
If this happens during takeoff, gravity is of no help and a landing to
correct the problem is required.
Automatic action by my module can prevent these problems for both up and
down gear operation.
Wolfgang
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Bill,
While one could expect the gear to not come down, there are many
imbalances while the gear is up - gravity and the nose gear gas spring
come to mind - this should relieve the pressure as soon as the dump valve
is selected.
On the other hand, the gear down and locked is in a very stable
condition - so one should only need such a switch for gear
retraction.
Scott |
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