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首页> 外文OA文献 >Pressure and heat-transfer distributions in a simulated wing-elevon cove with variable leakage at a free-stream Mach number of 6.9
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Pressure and heat-transfer distributions in a simulated wing-elevon cove with variable leakage at a free-stream Mach number of 6.9

机译：自由流马赫数为6.9时具有可变泄漏的模拟机翼-埃文港湾的压力和热传递分布

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摘要

An experimental aerodynamic heating investigation was conducted to determine effects of hot boundary-layer ingestion into the cove on the windward surface between a wing and elevon for cove seal leak areas nominally between 0 and 100 percent of cove entrance area. Pressure and heating-rate distributions were obtained on the wing and elevon surfaces and on the cove walls of a full-scale model that represented a section of the cove region on the space shuttle orbiter. Data were obtained for both attached and separated turbulent boundary layers upstream of the unswept cove entrance. Average free-stream Mach number was 6.9, average free-stream unit Reynolds numbers were 1.31 x 10 to the 6th power and 4.40 x 10 to the 6th power per meter (0.40 x 10 to the 6th power and 1.34 x 10 to the 6th power per foot), and average total temperature was 1888 K (3400 R). Cove pressures and heating rates varied as a function of seal leak area independent of leak aspect ratio. Although cove heating rates for attached flow did not appear intolerable, it was postulated that convective heating in the cove may increase with time. For separated flow, the cove environment was considered too severe for unprotected interior structures of control surfaces.
机译：进行了一项实验性的空气动力学加热调查，以确定热边界层吸入机翼和elevon之间的迎风表面上的凹处，使凹处密封泄漏面积名义上介于凹处入口面积的0％至100％之间。在全尺寸模型的机翼和天体表面以及凹室壁上获得了压力和加热速率分布，该模型代表了航天飞机轨道飞行器凹室区域的一部分。获得了未掠过的小海湾入口上游附着和分离的湍流边界层的数据。平均自由流马赫数为6.9，平均自由流单位雷诺数为每米6次幂1.31 x 10和6.40 x 6次方每米功率（0.40 x 10至6次幂和1.34 x 10至6次幂每英尺），平均总温度为1888 K（3400 R）。孔的压力和加热速率随密封件泄漏面积的变化而变化，与泄漏长宽比无关。尽管对附加流动的海湾加热速度似乎无法忍受，但据推测，海湾中的对流加热可能随时间增加。对于分离流，对于不受保护的控制表面内部结构，海湾环境被认为过于严酷。

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