| Popis: |
Comprehensive infrastructure analysis is central to developing architectures necessary to support the Space Exploration Initiative. In the ‘‘Split Sprint’’ architecture, the cargo is split from the crew. An efficient low thrust ‘‘slow boat’’ is used for the cargo and a high thrust ‘‘sprint’’ vehicle is used for the crew. Infrastructure analysis is utilized in developing initial element designs to meet the transportation system requirements of the slit sprint architecture. Infrastructure analysis considers technology availability, launch vehicle volume and lift requirements, on orbit assembly, trajectory design and optimization, system reduncancy requirements and evolutionary capability. The resulting infrastructure includes propulsion system options for the crew and cargo space transfer vehicles. For the cargo, an SP‐100 derived nuclear electric propulsion system was developed. For the crew, either a conventional cryogenic (LO2/LH2) propulsion system or nuclear thermal propulsion system is utilized. It is... |
