Exact involute ply patterns
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorNicholas J. Pagano
Life of this patent
Estimating the term…
Abstract
A hollow symmetrical structure in the form of a preselected body of revolution, and a method of making same. The structure comprises a plurality of a predetermined number of identically shaped and sized exact involute surface plies which are successively disposed and joined circumferentially in a contacting, stack-like layered, and overlapping relationship. Each ply is made of the same material and with the same ply pattern which is configurated and structured such that the plies made from using it fit together prefectly and their respective boundaries form the preselected body of revolution, without the defects induced by the prior art, such as wrinkles and pattern distortion.
Claims12
A hollow symmetrical structure, in the form of a body of revolution, comprising a plurality of a preselected number of identically shaped and sized exact involute surface plies which are successively disposed and joined circumferentially in a contacting, stack-like layered, and overlapping relationship.
A method of fabricating a hollow symmetrical structure in the form of a preselected body of revolution, comprising the steps of:
- a. forming a plurality of identically shaped and sized plies;
- b. positioning a predetermined number of said plurality of plies successively in alignment in a circumferential fashion and in a contacting, stacked-like layered relationship with each other, such that adjacent plies overlap each other by a predetermined distance;
- and
- c. joining said positioned plies together.
Dependencies are inferred from the claim text.