Marvin C Hawkins

Title: Marvin C Hawkins: Innovator in Propellant Technology

Introduction

Marvin C Hawkins is a notable inventor based in Tremonton, UT (US). He has made significant contributions to the field of propellant technology, holding 2 patents that showcase his innovative approach to solid propellant rocket motors.

Latest Patents

Hawkins' latest patents include a robust polyurethane liner designed for solid propellant rocket motors. This liner is engineered to be insensitive to large variations in stoichiometry and exhibits increased cohesive strength. When combined with a unique two-coat (wet coat) liner process, it modifies the ballistic properties of the adjacent interfacial propellant layer. The liner compositions consist of a polymeric binder with reactive hydroxyl functional groups and a curing agent with reactive isocyanate functional groups. The NCO/OH ratio is carefully selected to range from 1.5 to 4.5. Diisocyanate curing agents are particularly effective in this application. Additionally, a bonding agent, such as a polyfunctional aziridine compound, is included in the liner composition, typically ranging from about 3% to about 5% by weight. An oligomer catalyst is also part of the composition, comprising about 15% to about 50% by weight. Diammonium phosphate serves as both an oligomer catalyst and a ballistic modifier to inhibit propellant burn rate when the liner is cured concurrently with the propellant. A colorant, such as rhodamine B, may be added to assist in determining the coverage or thickness of the liner coating.

Career Highlights

Hawkins has had a distinguished career at Thiokol Corporation, where he has applied his expertise in propellant technology. His work has contributed to advancements in rocket motor design and performance.

Collaborations

Throughout his career, Hawkins has collaborated with notable colleagues, including Larry W Poulter and Ronald W Nelson. These collaborations have further enhanced the innovative work being done in the field of propellant technology.

Conclusion

Marvin C Hawkins is a prominent inventor whose work in propellant technology has led to significant advancements in solid propellant rocket motors. His innovative patents reflect his dedication to improving the performance and safety of rocket propulsion systems.