This inventor holds 1 USPTO granted patent. Top assignee: Thiokol Corporation. Active years: 1993.
Company Filing History:
Years Active: 1993
Title: Innovations by David Lefgren in Rocket Propellant Bonding
Introduction
David Lefgren is an accomplished inventor based in Garland, UT (US). He has made significant contributions to the field of rocket propulsion through his innovative patent. His work focuses on enhancing the bonding of propellants within rocket motors, which is crucial for the efficiency and safety of rocket launches.
Latest Patents
David Lefgren holds a patent for "Methods and compositions for bonding propellants within rocket motors." This invention presents a system and composition that binds rocket motor propellants directly to the insulation layer within the rocket motor. Traditionally, a liner layer is required between the insulation and the propellant. However, Lefgren's method allows for a more efficient process, particularly with hydroxy-terminated polybutadiene-type (HTPB) propellants. The method involves coating the insulation layer with a reactive material, such as a solution of isophorone diisocyanate (IPDI), which penetrates the insulation layer. Once sufficient penetration is achieved, the HTPB-based propellant is applied, forming a strong bond between the insulation and the propellant.
Career Highlights
David Lefgren has worked at Thiokol Corporation, where he has been instrumental in developing advanced technologies for rocket motors. His innovative approach to bonding propellants has the potential to improve the performance and reliability of rocket systems. With a total of 1 patent, Lefgren's contributions are noteworthy in the aerospace industry.
Collaborations
Throughout his career, Lefgren has collaborated with notable colleagues, including James W Sinclair and Kyung J Min. These collaborations have likely contributed to the advancement of technologies in rocket propulsion.
Conclusion
David Lefgren's innovative work in bonding propellants within rocket motors showcases his expertise and commitment to advancing aerospace technology. His patent represents a significant step forward in improving the efficiency and safety of rocket launches.