Laminated thermoplastic radome
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorEdward E. Greene
Life of this patent
Estimating the term…
Abstract
An improved rain resistance radome C-sandwich wall is constructed of thermoplastic polycarbonate material. The cores are either posts or tubes and are bonded to the skins with polyurethane. The percentage of core material to air is adjusted by electrical tuning to make the optimum dielectric value for use in the gigahertz radar frequency range.
Claims6
A radome wall for use in a radome of a supersonic aircraft, said radome being substantially resistant to rain erosion, said radome having a C-sandwich construction, said radome wall comprising:
- an outside skin, said outside skin composed of a thermoplastic selected from a group consisting of polyarylate, polycarbonate, polyetherimide, and polysulfone;
- a center skin, said center skin composed of said thermoplastic;
- an inside skin, said inside skin composed of said thermoplastic;
- an outside core between said outside and said center skins, said outside core composed of said thermoplastic;
- an inside core between said center and said inside skin, said inside core composed of said thermoplastic and structurally similar to said outside core, said outside and said inside cores comprising a plurality of periodic structures, said structures being posts or tubes and substantially perpendicular to said skins;
- and
- an adhesive for bonding said outside skin, said outside core, said center skin, said inside core, and said inside skin together.
A radome wall for use in a radome of a supersonic aircraft, said radome being substantially resistant to rain erosion, said radome having a A-sandwich construction, said radome wall comprising:
- an outside skin, said outside skin composed of a thermoplastic selected from said group consisting of polyarylate, polycarbonate, polyetherimide, and polysulfone;
- an inside skin, said inside skin composed of said thermoplastic;
- a core between said outside skin and inside skin, said core composed of said thermoplastic, said core comprising a plurality of periodic structures, said structures being posts or tubes and being substantially perpendicular to said skins;
- and
- an adhesive for bonding said outside skin, said core, and said inside skin together.
Dependencies are inferred from the claim text.