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US 5,310,142 AGranted
Dimple pattern pneumatic deicer assembly
AssigneeThe B. F. Goodrich Company
InventorNorbert A. Weisend, Jr.
Life of this patent
Estimating the term…
Abstract
A deicer assembly 32 for attachment to an airfoil includes a plurality of substantially parallel tube-like passages 36 formed by stitching parallel lines 78 through a pair of intermediate plies 52, 54. A zig-zag stitch line 76 criss-crosses the parallel tube lines 78 so that when the deicer is inflated by pressurized fluid a dimple matrix inflation pattern is formed.
Claims31
An apparatus for removing ice from an airfoil utilizing pressurized fluid, said apparatus comprising,
- a bottom layer of a first fabric;
- a top layer of a stretchable second fabric;
- said top and bottom layers being stitched together in a predetermined pattern comprising a plurality of substantially parallel stitch lines and a zig-zag stitch line provided along each of at least two adjacent ones of said plurality of substantially parallel stitch lines, said plurality of substantially parallel stitch lines forming a plurality of tube-like passages which are inflated by the fluid, each said zig-zag stitch line forming a zig-zag pattern,
- wherein the pressurized fluid is communicated across said stitch lines, said stitch lines thereby providing a plurality of dimples in said tube-like passages when said tube-like passages are inflated.
1 more element
A pneumatic deicing system comprising:
- an airfoil to be deiced;
- fluid source means for providing pressurized fluid;
- a bottom layer of a first fabric attached to said airfoil;
- a top layer of a stretchable second fabric;
- said top and bottom layers being stitched together in a predetermined pattern comprising a plurality of substantially parallel stitch lines and a zig-zag stitch line provided along each of at least two adjacent ones of said plurality of substantially parallel stitch lines, said plurality of substantially parallel stitch lines forming a plurality of tube-like passages which are inflated by the fluid, each said zig-zag stitch line forming a zig-zag pattern,
- wherein the pressurized fluid is communicated across said stitch lines, said stitch lines thereby providing a plurality of dimples in said tube-like passages when said tube-like passages are inflated.
3 more elements
An apparatus for removing ice from an airfoil utilizing pressurized fluid, said apparatus comprising:
- a bottom layer of a first fabric;
- a top layer of a stretchable second fabric for expanding away from said bottom layer;
- and,
- a plurality of attachment means for attaching said top and bottom layers together at isolated points, such that said top layer is able to expand away from said bottom layer 360.degree. around said isolated points, thereby creating a dimple at each one of said isolated points when said top layer is expanded away from said bottom layer by the pressurized fluid, said attachment means being arranged in a predetermined pattern.
1 more element
Dependencies are inferred from the claim text.