Aeronautics and astronautics – Aircraft structure – Ice prevention
Patent
1989-12-22
1992-07-14
Peters, Jr., Joseph F.
Aeronautics and astronautics
Aircraft structure
Ice prevention
244134A, B64D 1500, B64D 1516
Patent
active
051295989
ABSTRACT:
An attachable electro-impulse de-icer for de-icing an aircraft structural member includes an inductor coil disposed in proximity with the outer surface of the structural member. The coil is supported by a flexible, ice-accumulating support member (surface ply) that permits the coil to move relative to the structural member. Preferably the coil and support member are formed in an integral construction that can be attached to the leading edge of the structural member. The coil and support member are rapidly, and forcefully, displaced away from the structural member upon passing a short-duration, high-current pulse through the coil. The current flow creates an electromagnetic field that induces eddy currents in the support member (if made of metal), and the structural member (if made of metal). Upon collapse of the electromagnetic field in the coil, the support member is pulled rapidly to its rest position adjacent the structural member. Alternative arrangements are provided wherein (1) a metal target is disposed in proximity with the outer surface of the coil, (2) a metal target is disposed in proximity with the outer surface of the structural member, and (3) an additional target (doubler) is attached to the inner surface of the structural member.
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Adams Lowell J.
Weisend, Jr. Norbert A.
Wohlwender Thomas E.
B. F. Goodrich Co.
Kannofsky James M.
Peters Jr. Joseph F.
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