Optimal trajectory and heat load analysis of different shape lifting reentry vehicles for medium range application
| Autor: | Da-jun Xu, S. Tauqeer ul Islam Rizvi, Lin-shu He |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Engineering
Hypersonic speed Medium range Computational Mechanics Pseudo-spectral method Aerospace engineering Hypersonic boost-glide Cross-range business.industry Mechanical Engineering Pseudospectral method Metals and Alloys Aerodynamics Trajectory optimization Optimal control Heat capacity rate Nonlinear system Wing-body Military Science Lifting-body Ceramics and Composites Dynamic pressure Down-range Hypersonic missile business Heat rate limit Waverider vehicle |
| Zdroj: | Defence Technology, Vol 11, Iss 4, Pp 350-361 (2015) |
| ISSN: | 2214-9147 |
| DOI: | 10.1016/j.dt.2015.06.003 |
| Popis: | The objective of the paper is to compute the optimal burn-out conditions and control requirements that would result in maximum down-range/cross-range performance of a waverider type hypersonic boost-glide (HBG) vehicle within the medium and intermediate ranges, and compare its performance with the performances of wing-body and lifting-body vehicles vis-a-vis the g-load and the integrated heat load experienced by vehicles for the medium-sized launch vehicle under study. Trajectory optimization studies were carried out by considering the heat rate and dynamic pressure constraints. The trajectory optimization problem is modeled as a nonlinear, multiphase, constraint optimal control problem and is solved using a hp-adaptive pseudospectral method. Detail modeling aspects of mass, aerodynamics and aerothermodynamics for the launch and glide vehicles have been discussed. It was found that the optimal burn-out angles for waverider and wing-body configurations are approximately 5° and 14.8°, respectively, for maximum down-range performance under the constraint heat rate environment. The down-range and cross-range performance of HBG waverider configuration is nearly 1.3 and 2 times that of wing-body configuration respectively. The integrated heat load experienced by the HBG waverider was found to be approximately an order of magnitude higher than that of a lifting-body configuration and 5 times that of a wing-body configuration. The footprints and corresponding heat loads and control requirements for the three types of glide vehicles are discussed for the medium range launch vehicle under consideration. |
| Databáze: | OpenAIRE |
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