Fluid reaction surfaces (i.e. – impellers) – Support mounting – carrier or fairing structure – Spinner or fairwater cap
Patent
1996-06-28
1998-05-05
Kwon, John T.
Fluid reaction surfaces (i.e., impellers)
Support mounting, carrier or fairing structure
Spinner or fairwater cap
416245A, F04D 2918
Patent
active
057465800
ABSTRACT:
Apparatus is provided for creating heat by electromagnetic induction between relatively rotating components. In RAT applications, part of the nose cone (34) is formed from electrically conductive material (106) which is in thermally conductive relation to the nose cone exterior. A magnetic field is created by components (60) that are spaced apart from the electrically conductive material and relatively rotatable with respect to that material. The electrically conductive material intersects the magnetic field, at least in part, such that eddy currents are created in the electrically conductive material by relative rotation with respect to the magnetic field. These eddy currents create heat which is conducted to the exterior surface of the RAT nose cone. Preferably, the magnetic field is created by a pair of spaced-apart permanent magnets (60) mounted on a support plate (62) inside the RAT hub (28) and immediately behind the nose cone. The effect of the magnetic field in heating the nose cone can be increased by use of magnetically permeable material to form the support plate and/or part of the nose cone adjacent or integral with the electrically conductive material. The nose cone includes an annular lip at the outer circumferential edge thereof which permits the forces of the air stream to drive liquid from the nose cone rather than to flow down the sides thereof.
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Brown Neil Leonard
Krinickas Alexander
Parker Barry John
Stilwell John Douglas
Crowe Lawrence E.
Kwon John T.
Sundstrand Corporation
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