Northrop Grumman Systems Corporation

Alliant Techsystems Inc.

Russell J George

Daniel W Doll

John K Shigley

Martin R Neunzert

James D Rozanski

David W Endicott

Michael T Rose

Jared K Olson

Robert K Roberts

Martin McCulley

Lauren F Breitenbach

R Brad Cragun

Marc Hernandez

Klaron Cramer

Mark A Moore

A liquid rocket engine assembly comprising a thrust chamber, a nozzle, and a joint structure. The joint structure attaches the thrust chamber and the nozzle and comprises at least one seal element and an attachment ring interposed between the thrust chamber and the nozzle. Fasteners extend between the nozzle and the thrust chamber through the at least one seal element and the attachment ring. Materials of the thrust chamber and of the nozzle comprise different coefficients of thermal expansion. A method of forming a liquid rocket engine assembly is also disclosed.

Liquid rocket engine assemblies and related methods

Projectiles containing a fluorophore composition comprising a fluorophore compound and an activator composition comprising an activator compound for marking targets are disclosed. Some embodiments include a nose structure with a cavity radially segmented into a plurality of radially isolated compartments by at least one laterally and radially extending internal wall. Additional embodiments include a fore compartment and an aft compartment sealed by a septum. Yet additional embodiments include at least one pressurized cavity and may further include a plunger positioned and configured to pierce each pressurized cavity. Methods of manufacturing target marking projectiles and methods of marking targets are also disclosed.

Projectiles for marking targets and methods of manufacturing such projectiles

Projectiles for marking targets, methods of manufacturing the same, and methods of utilizing the same

Growing community of inventors

Pleasant View, UT, United States of America

Russell J George