ESPA On-orbit Maneuvering System (OMS)

Busek Co. Inc. proposes to develop a low-cost, multi-mode propulsion module that can be added to an EELV Secondary Payload Adapter (ESPA), turning it into a self-propelled free flying spacecraft (S/C). This Orbit Maneuvering System (OMS) is enabled by the availability of Busek’s high Isp electric propulsion technology. The baseline system includes four BHT-200 Hall Effect Thrusters (HETs) currently flying on TacSat2, a COTS hydrazine resistojet, and eight flight qualified hydrazine monopropellant thrusters for attitude control. This 800 W propulsion system can deliver deltaV >1000 m/s to a 500 kg S/C. Most or all of the deltaV is provided by the HET. Responsive, high thrust deltaV1000 m/s to a 1200 kg system. In Phase I, the propulsion system and OMS architecture will be defined and the selected system will be developed into a preliminary design. To assist, Busek will subcontract CSA Engineering, which builds the ESPA ring, and include MicroSat Systems Inc. in its integrated product team. In Phase II, MSI will be an explicit subcontractor to Busek.