Back to results
US 4,574,700 AGranted
Solid rocket motor with nozzle containing aromatic amide fibers
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorJoseph W. Lewis
Life of this patent
Estimating the term…
Abstract
A solid rocket motor is provided which comprises a rocket case and a centrally ported propellant grain comprising a main portion and a nozzle portion, wherein the main portion is a shaped and cured first propellant and wherein the nozzle portion comprises a shaped and cured second propellant composition having a lower burn rate than the first composition and having a plurality of aromatic amide fibers dispersed therethrough.
Claims5
In a solid rocket motor comprising
- a. a rocket case having a closed first end and an open second end;
- and
- b. a centrally ported propellant grain comprising:
- i. a main portion consisting of a shaped and cured first propellant composition, and
- ii. a nozzle portion consisting of a shaped and cured second propellant composition;
- wherein said second composition has a lower burn rate than said first composition;
- and wherein said nozzle portion has a diverging exit cone in communication with the central port extending through said nozzle portion and into said main portion;
- the improvement which comprises a plurality of aromatic amide fibers homogeneously dispersed through said nozzle portion.
5 more elements
Dependencies are inferred from the claim text.