LOW-COST RAMJET COMBUSTOR INSULATORS

"Mississippi Polymer Technologies, Inc. (MPT), in cooperation with Atlantic Research Corporation, proposes to develop ultra-high performance Parmaxr Self-Reinforcing Polymers (SRPs) for ramjet combustor applications. Parmaxr SRPs, which offer strengthscomparable to mild steels and specific strengths comparable to titanium alloys, are thermoplastic polyparaphenylenes with superior ablative properties. This combination of low-cost thermoplastic processing and high char-yield makes Parmaxr SRPs idealinsulators.Parmaxr SRPs provide a rigid char that will withstand the combustor flow field shear forces without degrading the produced energy; offering lighter weight and higher performance (thermal diffusivity, conductivity, and ablative performance) than existingsilica-filled silicone rubber materials. Additionally, Parmaxr SRPs will offer enhanced bondability and minimized off-gassing at the case bondline.In fact, because of their great strength, Parmaxr SRPs may offer the capability to fabricate ramjet or integrated rocket/ramjet engines without the use of an insulated steel case. This will provide tremendous system performance increases, includingincreased range/payload, reduced logistical cost, and potentially reduced lifecycle cost as a result of reduced corrosion concerns. Parmaxr SRPs are able to offer this unparalleled capability because of their unique chemistry - no other material inexistence is comparable to these amorphous t