g. Orbital assembly requires remote controlled manipulators. h. Maximum on orbit manufacturing and assembly will be necessary when using the Shuttle transportation or other options with small volume capacity requiring high launch packaging densities to achieve payload performance. 5.2 RECOMMENDATIONS Technology issues for mechanical systems are listed and discussed in Section 4 of Section 8 (Mechanical Systems and Flight Operations). This listing identifies areas in technology where more work needs to be done and suggests approaches for accomplishing these tasks. The following simplified list is incorporated here as recommendations for further detailed investigation. a. Evaluate alternate power transfer and drive devices for the rotary joint. b. Conduct detailed control system analysis. c. Conduct detailed investigations of composite structures and assembly techniques. d. Investigate tension-brace concepts and compare them with the built-up section approach. e. Evaluate the local crippling stress characteristics of the basic thin material elements of the structure. f. Establish the design environments for launch into low earth orbit, transfer to synchronous orbit as well as those associated with fabrication and assembly.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==