Rocket Motor - Dual Pulse

The Phase II Rocket Motor-Dual Pulse program is planned to advance technologies associated with rocket motor case materials and manufacturing, propellant grain designs with burn rate augmentation, insensitive munitions compliance, thermal barrier propellant grain segregation devices, high volumetric propellant loaded case assemblies and non-eroding nozzle systems. The program consists of a design phase in which one or more candidate 7-inch diameter high performance propulsion system defined during the Phase I studies will be subjected to detailed design and ballistic performance analyses. Analysis information will be provided to the Raytheon Company to have an analytical mission performance assessment of the candidate motor(s) completed for to air-to-air missile performance. Burn rate augmentation tests will be completed using aluminized HTPE insensitive munitions propellant and an array of candidate rate augmentation materials with goals of achieving a burn rate to meet thrust goals for Pulse 2 operation using a high volumetrically loaded propellant grain. Data from these tests will then be used to design and support manufacture and testing of a full scale pulse 2 propellant grain in which the gases are exhausted over pulse 1 case insulation materials and throttled thru a non-eroding throat nozzle. The program culminates in a 7-inch diameter dual pulse motor demonstration static test firing.