| Autor: |
D Bose, Mark Stephenson, John G. Martin, J Pahle, J Selmon, Jr J. Davidson, John D. Mcminn, F Lallman |
| Rok vydání: |
1999 |
| Předmět: |
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| Zdroj: |
Guidance, Navigation, and Control Conference and Exhibit. |
| DOI: |
10.2514/6.1999-4124 |
| Popis: |
The goal of the Hyper-X program is to demonstrate and validate technology for design and performance predictions of hypersonic aircraft with an airframe-integrated supersonic-combustion ramjet propulsion system. Accomplishing this goal requires flight demonstration of a hydrogen-fueled scramjet powered hypersonic aircraft. A key enabling technology for this flight demonstration is flight controls. Closed-loop flight control is required to enable a successful stage separation, to achieve and maintain the design condition during the engine test, and to provide a controlled descent. Before the contract award, NASA developed preliminary flight control laws for the Hyper-X to evaluate the feasibility of the proposed scramjet test sequence and descent trajectory. After the contract award, a Boeing/NASA partnership worked to develop the current control laws. This paper presents a description of the Hyper-X Research Vehicle control law architectures with performance and robustness analyses. Assessments of simulated flight trajectories and stability margin analyses demonstrate that these control laws meet the flight test requirements. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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