Since the features and characteristics of the OTV's that result from each option will be a significant factor in the systems evaluation it will be necessary to develop a cargo OTV (COTV) for each assembly option to a sufficient level of detail to permit a comparative evaluation. Preliminary ground rules, mission requirements, and performance requirements were generated to provide an initial transportation system baseline and to assist in coordinating requirements and capabilities. Since a prototype requirements document was desired, the level of detail in some cases goes beyond the cjrrent requirements for design concepts and beyond the present need or capability to quantify. General ground rules, applicable to all transportation system elements are: a. The SPS transportation system elements, with the exception of the Shuttle, are dedicated and optimized for the installation, operation, and maintenance of the SPS. b. The SPS transportation system will be designed for minimum total program cost. c. Energy requirements will be minimized consistent with minimum cost. d. Environmental impact will be minimized and, so far as possible, protective measures needed will be factored into cost analyses. e. The use of critical materials will be minimized consistent with cost, energy and environmental impact requirements. Ground rules and requirements developed for each type of vehicle are: 2.1 Heavy Lift Launch Vehicle (HLLV) Ground Rules a. The HLLV may impose up to 4g's on the payload during delivery to the staging orbit. b. The maximum temperature within the HLLV payload bay shall be 200°F or less. c. The acoustic and structural dynamic loading on HLLV payloads shall be equal to or better than the Shuttle orbiter payload bay requirements. d. The HLLV launch reliability shall be 0.97 or better. e. The HLLV will provide no services to the payload and shall require no services from the payload.
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