The Science Times:

The US Department of Defense solicits ideas for a solid propellant that greatly reduces exhaust infrared signatures — a stealth rocket fuel.

A posting at the Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) website was made by the Missile Defense Agency (MDA). The project looks at solid propellants that reduce IR signatures while keeping thrust to mass ratio performance.

The solicitation opened on September 23 and is set to close on October 22…

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