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US 10,633,291 B2Granted
Window material for seeker missiles
AssigneeNokomis, Inc.
InventorRobert M. Nichol
Life of this patent
Estimating the term…
Abstract
A window pane for an interceptor missile includes a light transmissive base material and light transmissive additive particles dispersed within a thickness of the light transmissive base material so as to define stress nodes, the stress nodes localizing, upon applied thermal shock or thermal heating, crack propagation around each stress node and/or between two or more adjacent stress nodes and preventing a continuous crack propagation through any one of a length, a width and a thickness of the window pane.
Claims14
A window pane for an interceptor missile, comprising:
- a first surface and a second surface, said second surface being spaced apart from said first surface to define a thickness of said window pane;
- a light transmissive base material comprising from about 90% to about 99.9% by weight, said light transmissive base material being disposed within said thickness between said first and second surfaces;
- and
- a light transmissive additive material comprising particles dispersed within said light transmissive base material and within said thickness between said first and second surfaces, said light transmissive additive particles comprising from about 0.1% to about 10% by weight;
- said light transmissive additive material being different than said light transmissive base material;
- said base material and said particles defining a polycrystalline composition with stress nodes.
3 more elements
A window pane for an interceptor missile, comprising:
- a first surface and a second surface, said second surface being spaced apart from said first surface to define a thickness of said window pane;
- a light transmissive base material, said light transmissive base material being disposed within said thickness between said first and second surfaces;
- and
- a light transmissive additive material comprising particles dispersed within said light transmissive base material and within said thickness between said first and second surfaces so as to define a polycrystalline composition with stress nodes, said stress nodes localizing, upon applied thermal shock or thermal heating, crack propagation around each stress node and/or between two or more adjacent stress nodes and preventing a continuous crack propagation through any one of a length, a width and said thickness of said window pane.
1 more element
Dependencies are inferred from the claim text.