2.0 HIGH-THRUST COTV (John C. Hooper, Primary Propulsion Branch, EP2) 2.1 GROUND RULES & ASSUMPTIONS The high-thrust COTV is used to transport material for construction of the SPS from a LEO staging orbit to GSO. The high-thrust COTV is able to operate at a high T/W (greater than 0.1) since the payload is packaged in such a manner that it can withstand such loads. Because of the nature of the payload, it is not capable of supplying power to the COTV and the dependent power option considered for the low-thrust COTV does not exist for the high-thrust case. An HLLV payload capability of 10$ Ibm to a LEO staging point where the payload/COTV rendezvous could take place and where COTV propellant tanking could occur for a reusable COTV was assumed.
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