Naval Research Laboratory, 4555 Overlook Ave. S.W., Washington, D.C., 20375

70 -- SOFTWARE SOL N00173-98-Q-0120 POC Darlene Copp, Purchasing Agent, (202) 767-2374 The Naval Research Laboratory has a requirement for a Spacecraft Systems Engineering Software package that must consist of a central program (a program manager) which manages the use of other high level tools to conduct a system engineering approach to satellite design. This software environment must be able to allow addition to and/or creation of new tools as needed. In addition to specific subsystem software tools, this environment must incorporate productivity tools to support management activities. This environment must allow a user to enter system level requirements, and from those, autonomously determine subsystems requirements and direct the calling of tools needed to analyze and design a spacecraft to meet the entered requirements. This program manager must maintain linkages of the various subsystems so that trade studies can be performed and all the interactions of the subsystems are accounted for. Configuration management is a critical function and historical records of changes must be maintained. The following software programs or their equivalents must be included as tools in the software environment. For orbital dynamics, constellation design, eclipse times, etc. Satellite Toolkit by AGI should be used. For Computer Aided Design and detailed drawings, Unigraphics by McDonnell Douglas or AUTOCAD by AUTODESK should be used. For visualization, Spectrum Visualizer, by C.E.S. For cost estimates, PRICE by Lockheed-Martin, for mathematical calculations, MATLAB by the MATHWORKS, for knowledge based tables, EXCEL by Microsoft must be integrated with easily used interfaces. For structural analysis a powerful Finite Element Analysis (FEA) program must be used, examples of acceptable FEA programs are: NASTRAN, or GENESIS by VMA Engineering. Others of equal or greater capability may also be used. For RF link budgets, knowledge based tables using EXCEL or MATLAB should be used. For thermal analysis, TRASYS and SINDA are suggested, but others of equal or greater capability may be used. For attitude control, a demonstrated internally written program must be used. Demonstration of its accuracy and robustness must be furnished. Other subsystems must be addressed using appropriate codes as required. Demonstrations of the accuracy of each must be demonstrated. This includes programs for electrical power systems, launch vehicle environments, mechanisms, propulsion, reaction control, ground operations and control and data handling. Please visit our web site http://heron.nrl.navy.mil/supply for copies or solicitation packages. Paper copies will not be issued. See Note(s): 1. Posted 08/14/98 (I-SN237183). (0226)

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