Modular Aerospike Engine

Arctic Slope Technical Services is pleased to present this proposal for the development of a low cost thater ballilstic missile target that uses an advanced, high performance storable propellant rocket engine. Our modular aerospike engine is capable of achieving significantly higher nozzle area ratios than traditional bell nozzles, when designed to the same volume and weight limitations. Most notably, the modular approach means that multiple combustion chambers are used, instead of a single large chamber. This enables the use of an additive manufacturing approach, a proven method for significant reduction in cost. The modular approach also greatly reduces development costs because a single small thruster module can be qualified without the need for full-up engine tests. The modular design also simplifies engine throttling, should it be necessary, because individual thruster modules can be started and stopped on command, which avoids the complications associated with throttling fixed-orifice injectors. Our Phase I project, together with internal R&D funds we have invested, clearly show significant range increases can be expected from adopting the aerospike engine. Approved for Public Release 15-MDA-8169 (20 March 15)