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US 8,617,326 B1Granted
Bipropellants based on chosen salts
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsStefan Schneider, Tommy W. Hawkins, Michael S. Rosander
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Abstract
Advanced bipropellant fuels with fast ignition upon mixing with storable oxidizer (N2O4, nitric acid) have been synthesized and demonstrated. The bipropellant fuels are based upon salts containing dicyanamide or tricyanomethanide anions and employ at least two hydrazine functionalities in the cations.
Claims6
A hypergolic bipropellant comprising:
- a) an ionic liquid fuel comprising:
- (1) an open chain alkylhydrazidium cation having at least two hydrazine moieties;
- and
- (2) a dicyanamide anion;
- and
- b) nitrogen tetroxide operable as an oxidizer.
3 more elements
A hypergolic bipropellant comprising:
- a) an ionic liquid fuel comprising:
- (1) an open chain alkylhydrazidium cation having at least two hydrazine moieties;
- and
- (2) a dicyanamide anion;
- and
- b) nitric acid operable as an oxidizer.
3 more elements
Dependencies are inferred from the claim text.