Nitramine propellants
OwnerAlan M. Acting Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Norman S. Cohen +1inventors
InventorsAlan M. Acting Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Norman S. Cohen, Leon D. Strand
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Abstract
Nitramine propellants absent a pressure exponent shift in the burning rate curves are prepared by matching the burning rate of a selected nitramine or combination of nitramines within 10% of burning rate of a plasticized active binder so as to smooth out the break point appearance in the burning rate curve.
Claims10
A gun propellant composition absent an exponent shift in the burning rate curve consisting essentially of a dispersion of
- energetic nitramine particles in
- a plasticized binder having a monopropellant burning rate at selected pressure within .+-.10% of the monopropellant burning rate of the nitramine.
A composition according to claim 9 in which the binder includes nitrocellulose plasticized with trimethylol ethane trinitrate and the nitramine is ethylene dinitramine. 11. A composition according to claim 10 in which the nitramine is selected from cyclotetramethylenetetranitramine or cyclotrimethylenetrinitramine and the binder comprises nitrocellulose and a plasticizer including nitroglycerine
- and a minor amount of inert polyester plasticizer. 12. A composition according to claim 10 in which the nitramine is ethylene dinitramine and the binder comprises nitrocellulose and a plasticizer including
- nitrocellulose and a minor amount of an inert polyester plasticizer. 13. A composition according to claim 2 in which the particle size of the
- nitramine is less than 250 microns. 14. A composition according to claim 12 in which the particle size of the nitramine is less than 8 microns.
Dependencies are inferred from the claim text.