ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,339, issued on Sept. 23, was assigned to X-Bow Launch Systems Inc. (Albuquerque, N.M.).
"Methods for rocket fuel grain coating and unitary manufacture" was invented by Jason Hundley (Albuquerque, N.M.), Mark Kaufman (Auburn, Calif.), Michael McPherson (Socorro, N.M.) and Jillian Marsh (Austin, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for making a unitary fuel grain for use in a rocket motor or gas generator comprising forming a fuel grain coating substantially free of gas-permeable voids, forming a succession of additional coats of oxidizer depleted grain material substantially free of gas-permeable voids. The fuel grain is the...