Abstract: 1. A method of making a solid propellant rocket motor having a shaped fuel charge which comprises the steps of: forming a one piece motor casing having an aperture therein, assembling within said one piece casing a mandrel having an overall diameter larger than the diameter of said aperture, casting a solidifiable propellant within said casing above said mandrel, curing said propellant and thereafter removing said mandrel from said motor.
Type:
Grant
Filed:
January 16, 1963
Date of Patent:
January 4, 1977
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
Inventors:
Joseph G. Thibodaux, Jr., Donald J. Lewis
Abstract: Oxygen difluoride, OF.sub.2, is reacted with ethylenically unsaturated fluorocarbon compounds. Depending upon the fluorocarbon material and reaction conditions, OF.sub.2 can chain extend fluoropolyenes, convert functional perfluorovinyl groups to acyl fluoride and/or epoxide groups and act as a monomer for an addition type copolymerization with diolefins.
Type:
Grant
Filed:
June 11, 1970
Date of Patent:
January 6, 1976
Inventors:
George M. Deputy Administrator of the National Aernautics and Space Administration, with respect to an invention of Low, Madeline S. Toy
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