Electrical Solid Propellents: A Safe, Micro to Macro Propulsion Technology

摘要

In this work we developed three high performance families of plastisol solid propellants that are IM-capable and highly manufacturable, using benign processes and "green" ingredients. Highly aluminized Electric Solid Propellant (ESP) "igniterless" rocket motors have been demonstrated at 4-inch diameter scale. These igniterless rocket motors use inert metal electrodes for direct ignition of the electric solid propellant, thereby eliminating the need for pyrotechnic ignition systems. A fast cook-off Insensitive Munitions test of a 4-inch diameter aluminum-cased ESP motor yielded a Type-V reaction, with no materials ejected from the burn pit. We successfully demonstrated pyrogen-free, igniterless electrically-initiated ignition of 200 lbf thrust class static tests in three separate firings conducted during the development program. In related activities, both nonmetalized minimum signature formulations and reduced-signature boron-fueled plastisol ESP compositions continue to undergo qualification testing for technology transfer applications in defense and commercial endeavors.