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Conceptual Design Of An Integrative Hypersonic Vehicle Based On 3D Inward-Turning Inlet

Posted on:2012-10-04Degree:MasterType:Thesis
Country:ChinaCandidate:X H XiangFull Text:PDF
GTID:2132330338495838Subject:Aircraft design
Abstract/Summary:PDF Full Text Request
According to the latest research results and future trends of airbreathing hypersonic technology, the high lift-to-drag ratio characteristic of waveriders and excellent intake capability of 3D inward-turning inlet are combined to obtain a higher-performance hypersonic vehicle. Waveriders, inlet, integration of aerodynamic configuration/propulsion system and other aerodynamic designing problems are studied in this paper as follows:Methods of three conventional waveriders based on the flow field of wedge, cone and osculating cone are elaborated and programmed, the resulting three waverider configurations are validated and analyzed with numerical methods.In accordance with the starting and self-starting performance of the Jaws inlet in low Mach numbers, structures of the shock-waves and cross-section of the inlet are suitably changed, and a new inlet shape (denoted"Sim-Jaws") which could be integrated with aerodynamic configuration is gained, and also optimized by genetic algorithm. The optimized geometries are analyzed by numerical simulations.With the obtained waveriders and the Sim-Jaws inlet, integration design for overall vehicle configuration is discussed, which mainly include waverider-front body/inlet and afterbody/nozzle. In addition, the up surface of aircraft is designed as free expansion and waverider-wing is added to the lateral margin of vehicle body. By simplifying isolator, combustor, nozzle, stabilizer and other components, the overall configuration of aircraft which satisfy to the required size, capture area , effective volume and other design requirements are acquired.The aerodynamic interface division of airbreathing hypersonic vehicle is analyzed. By using CFD software, a variety of aircraft configurations in this paper are carried out with inviscid and viscous numerical calculation, and compared with foreign similar hypersonic vehicle.
Keywords/Search Tags:Airbreathing hypersonic vehicle, waverider, 3D inward-turning inlet, integration, numerical simulation
PDF Full Text Request
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