Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Aerodynamic Heating"”.
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Aerodynamic Heating of a Hypersonic Naval Projectile Launched At Sea Level
… efficient codes are available that can model the aerodynamic heating response for a fully detailed projectile, including all subassemblies, over an entire trajectory. Although the codes obtained were not applicable to a fully detailed thermal soak analyses they were useful in providing insight …
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Model Reduction of Computational Aerothermodynamics for Multi-Discipline Analysis in High Speed Flows
… reduction techniques for the computation of aerodynamic heat flux and pressure loads for multi-disciplinary analysis of hypersonic vehicles.NASA and the Department of Defense have expressed renewed interest in the development of responsive, reusable hypersonic cruise vehicles capable of …
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An Optimization Method for the Preliminary Design of Interplanetary Aerobraking Missions (Spacecraft, Orbit Mechanics)
… are compared. The first simulation assumes only aerodynamic drag perturbations and uses simplified analytical expressions. The second is a detailed numerical integration including perturbations due to drag, atmospheric rotation, planet oblateness, third-body effects, and solar radiation pressure. …
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Behavior of a cantilever plate subjected to rapid edge heating
… encountered in thin solid wings subjected to aerodynamic heating induce thermal stresses that may effectively reduce the stiffness of the wing. The effects of this reduction in stiffness were investigated experimentally by rapidly heating the edges of a cantilever plate. The midplane thermal …
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Modeling of high enthalpy flows for hypersonic re-entry and ground-based arc-jet testing
… electric field. The electric field and the Joule heating term are computed using a Poisson equation and the generalized Ohm's law. A standard two-temperature model is implemented to account for non-equilibrium effects. A numerical method based on the streamline upwind Petrov-Galerkin (SUPG) finite …
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Sounding Rocket Redesign And Optimization For Payload Expansion And In Flight Telemetry Transmittal
… rocket, the mechanical loading and finally the aerodynamic heating. Semi-empirical methods were used whenever possible to allow comparison with experimental data. This procedure revealed that larger diameter upper stages might be used up to a reasonable maximum of four inches. The four-inch …
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Optimal trajectories for hypervelocity flight
… problem is studied: (P4) minimize the peak heating rate. Numerical solutions for Problems (P1), (P2), (P3), (P4) are obtained by means of the sequential gradient-restoration algorithm for optimal control problems. The engineering implications of the results obtained are discussed. In …
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Exploratory Study on the Design of Combined Aero-Thermo-Structural Experiments in High Speed Flows
… These vehicles experience combined extreme aerodynamic heating and pressure loads. In addition, the structural loads are greatly affected by temperature-dependent material properties. Prediction of the response of these structures requires accurate, coupled fluid-thermal-structural analysis …
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A Lagrangian, Discontinuous-Galerkin Material Response Solver for the Analysis of Ablative Thermal Protection Systems
… safeguarding aerospace vehicles from the intense aerodynamic heating encountered during hypersonic flight. One category of TPS materials manages extreme heat through pyrolysis, a process in which the elevated temperatures trigger an endothermic reaction that decomposes the material into char and …
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Improving the Performance of Re-entry Vehicle in Hypersonic Flow by Morphing Nose cone by Bio-Mimicking Honey Bee Abdomen
… the morphing nose cone is undertaken to assess aerodynamic performance. The ability to morph is crucial for aerospace vehicles to effectively utilise aerodynamics, mobility, and flight control while penetrating and re-entering the environment. Nevertheless, the present aerospace vehicle still …