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首页> 外文会议>56th International Astronautical Congress 2005 vol.8 >ANALYSIS OF SHOCKWAVE INTERACTIONS FOR A GENERIC SPACE PLANE CONFIGURATION AT HYPERSONIC SPEEDS AND ESTIMATION OF HEAT FLUX GENERATION ON THE STRUCTURE
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ANALYSIS OF SHOCKWAVE INTERACTIONS FOR A GENERIC SPACE PLANE CONFIGURATION AT HYPERSONIC SPEEDS AND ESTIMATION OF HEAT FLUX GENERATION ON THE STRUCTURE

机译：超声速下一般空间平面构型的冲击波相互作用分析及结构热通量的估算

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Any vehicle travelling at hypersonic speed such as a spaceplane, either in the ascent or re-entry phase, can be subjected to extreme local heating due to the effects of interacting Shockwaves. These interactions have been classified in the past into five types (Ⅰ-Ⅴ). The most critical is the Type Ⅳ interaction which can subject the structure to very high temperatures and heat fluxes. These can significantly exceed the material's heat capacity leading to catastrophic failure. A geometrical analysis was performed on a simplified model of the Skylon spaceplane. Assuming a configuration in which a cigar shaped fuselage has high sweep, low aspect ratio wing and engines mounted on the wing tips, it was shown that a number of shock interactions occur during both ascent and re-entry phases. During ascent, critical Type IV interactions were found to occur on the outboard section of the wing. Stagnation temperatures peaked at Mach 14 reaching values of 4807 Kelvin. Convective heat transfer analysis assuming a laminar boundary layer showed that the resulting heat W/2 fluxes were of the order of 10~5 W/m~2. Under the assumptions made, no Type Ⅳ interactions were found for the re-entry case. Analysis was performed assuming a calorifically perfect gas (no molecular disassociation occurs), but taking into account a variation of γ.
机译：由于冲击波的相互作用，任何在上升或再进入阶段以超音速行驶的车辆（例如太空飞机）都可能遭受极端的局部加热。这些相互作用过去被分为五种类型（Ⅰ-Ⅴ）。最关键的是Ⅳ型相互作用，它会使结构经受很高的温度和热通量。这些可能会大大超过材料的热容量，从而导致灾难性的故障。在Skylon太空飞机的简化模型上进行了几何分析。假设雪茄形的机身具有高后掠角，低纵横比的机翼以及安装在机翼尖端的发动机，表明在上升和再进入阶段都会发生许多震动相互作用。在上升过程中，发现关键的IV型相互作用发生在机翼的外侧部分。停滞温度在14马赫时达到峰值，达到4807开尔文的值。假设为层流边界层的对流传热分析表明，所得的W / 2通量约为10〜5 W / m〜2。在作出的假设下，未发现重入事件的Ⅳ型相互作用。假设分析的气体是发热量极高的气体（没有发生分子解离），但考虑到γ的变化进行分析。

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