the basic data for determining the feasibility of structural assembly. Tests of production rate, structural alignment and strength will be required. Figure 14-7(a) is a schematic of the equipments used in Mission 3. The payload will consist of manufacturing facilities to fabricate the basic structural elements, teleoperators (both attached and free flying) and the tools and equipments necessary in an EVA mode of assembly. The Shuttle support equipments required are: the RMS, Pallet, Airlock, and Spacelab. A Stationkeeping/Docking Module, which is attached to the assembled Structural Bay, is used to maintain the assembly until the next mission, in which waveguides are attached to the supporting structure. Figure 14-7(b) is a matrix of Shuttle flights and test requirements broken down into options for materials, scale, joint method and assembly techniques. Flight 1 is designed to provide basic data on fasteners using small scale models. The objective is to determine production rate and joint integrity. The second and third flights construct 18 x 18 m antenna structural bays in aluminum using candidate assembly methods. Flights 4 and 5 perform similar operations on a composite structure. / Mission 4 - Waveguide Fabrication Technology The objective of this mission is to demonstrate the fabrication and/or deployment of a waveguide subarray. Demonstration of this function in both aluminum and composite is necessary. Mating of the fabricated and/or deployed waveguide subarray to the structure assembled in Mission 3 will also be demonstrated. Tests will include: measurements of mechanical accuracy of the waveguide, assessment of production rates, and tests for structural integrity, before and after mating to the free-flying structure. Figure 14-8(a) is a schematic of equipment required in Mission 4. Included are deployable waveguide sections, waveguide fabrication modules (composite and aluminum), assembly jigs, and teleoperators. Shuttle support equipments include the RMS, Pallet, Spacelab, and Auxiliary Power and Heat Rejection Module, the latter required because the waveguide assembly fixture blankets the Shuttle radiators.
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