Undetermined edition: The X-43A Six Degree of Freedom Monte Carlo Analysis. Meeting Paper AIAA-2008-203, Research and Engineering, NASA Dryden Flight Research Center [electronic resource].

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Title
  • The X-43A Six Degree of Freedom Monte Carlo Analysis. Meeting Paper AIAA-2008-203, Research and Engineering, NASA Dryden Flight Research Center.
Other Creators
  • Baumann, Ethan (Creator)
  • Bahm, Catherine (Creator)
  • Strovers, Brian (Creator)
  • Beck, Roger (Creator)
  • Richard, Michael (Creator)
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  • [electronic resource]
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Summary
  • This report provides an overview of the Hyper-X research vehicle Monte Carlo analysis conducted with the six-degree-of-freedom simulation. The methodology and model uncertainties used for the Monte Carlo analysis are presented as permitted. In addition, the process used to select hardware validation test cases from the Monte Carlo data is described. The preflight Monte Carlo analysis indicated that the X-43A control system was robust to the preflight uncertainties and provided the Hyper-X project an important indication that the vehicle would likely be successful in accomplishing the mission objectives. The X-43A inflight performance is compared to the preflight Monte Carlo predictions and shown to exceed the Monte Carlo bounds in several instances. Possible modeling shortfalls are presented that may account for these discrepancies. The flight control laws and guidance algorithms were robust enough as a result of the preflight Monte Carlo analysis that the unexpected in-flight performance did not have undue consequences. Modeling and Monte Carlo analysis lessons learned are presented.
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