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Busek Co. Inc.    |    11 Tech Circle, Natick, MA 01760    |    508-655-5565    |    Home    |    Contact
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AMMONIA MICRO-RESISTOJET Through a AFRL-Kirtland sponsored SBIR, Busek has developed an integrated primary & attitude control  propulsion system.  It features safe, non-volatile propellant, consumes 1.0 U, less than 15W and under 1.25kg. Busek uses ammonia propellant for several reasons including: (1) relative high specific impulse, (2) ammonia is  self pressurizing, (3) ammonia is benign and relatively easy to handle and store, and (4) Busek has experience  and a working knowledge base for this propellant.  Additional propellants have been proven, including Dupont  Suva(R) R-134A and R-236fa refrigerants. Assuming 15W available power, 10 mN thrust is possible for a total delta-V of 60 m/s (assuming a 4 kg  spacecraft). 
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