Evaluation of the X-43A Scramjet Engine Controller Performance by Monte Carlo Technique
Jones, Thomas P. and Baumann, Ethan (2003) Evaluation of the X-43A Scramjet Engine Controller Performance by Monte Carlo Technique. Technical Report NASA/TM-2003-212036, Research Engineering, NASA Dryden Flight Research Center.
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Abstract
A Monte Carlo analysis has been conducted to evaluate the performance of the scramjet engine controller for the X-43A. The Propulsion System Controller (PSC) logic was evaluated to assess the effectiveness of a proposed unstart protection algorithm with regard to preventing engine unstarts and achieving vehicle performance goals. The Monte Carlo data obtained from a high fidelity simulation predicts that utilizing the unstart protection logic significantly reduces the risk of unstart by keeping the isolator margin at or above its desired value. The results also show that the unstart protection algorithm does not significantly reduce the probability of meeting the project’s primary acceleration goal, thus justifying its suitability for use within the X-43A PSC.
| EPrint Type: | NASA Technical Memorandum |
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| Keywords: | Engine control, Monte Carlo, Scramjet, Unstart, X-43 |
| Subjects: | Aircraft/Project: X-43A Hyper-X (01 - 09) Aeronautics: (07) Aircraft Propulsion And Power |
| ID Code: | 25 |
| Deposited On: | 28 May 2004 |
| Additional Information: | 21 pages. Also presented at the AIAA/ASME/SAE/ASEE Joint Propulsion Conference, July 20-23, 2003, Huntsville, Alabama, AIAA 2003-5192 |
