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テーパ型超音速複葉翼の始動特性と翼端板効果

机译:锥形超音速双翼飞机叶片的启动特性和叶顶板效应

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摘要

本研究ではPSP計測とCFD解析を併用して,テーパ型rn超音速複葉翼の始動特性および翼端板がテーパ翼の始動特rn性と空力特性に及ぼす影響を調べた.PSP計測とCFD解rn析の結果を統合して得られた結果を以下にまとめる.%The aerodynamic characteristics and the effects of winglets of a tapered supersonic biplane during thernstarting process have been investigated through Experimental and Computational Fluid Dynamics (EFD/CFD). Three types of the tapered biplane model were used: without winglet (type-N); with the winglet which covers only the aft-half of the wing tip (type-A); with the winglet which covers the entire wing tip (type-B). Experiment was conducted in the supersonic blow-down wind tunnel with 600 mm × 600 mm cross section located at the High-speed Wind Tunnel Facility of Institute of Space and Astronautical Science, JAXA. The flow conditions covered from M_∞ = 1.5 to 1.9 with increments of 0.1. Pressure-Sensitive Paint was applied to measure pressure distributions on the surface of supersonic biplane models. CFD simulations were conducted to compare with experiment and to investigate effects of the Mach numbers in detail. The tapered biplane without the winglet was found to start between M_∞ = 1.8 and 1.9. The difference of the starting Mach numbers between type-N and type-A was small. On the other hand, the starting Mach number of type-B was about 0.05 higher than that of type-N.
机译:在这项研究中,我们使用PSP测量和CFD分析研究了锥形rn超音速双翼飞机叶片的启动特性以及端板对锥形叶片的启动特性和空气动力学特性的影响。通过汇总PSP测量结果和CFD分析获得的结果总结如下。通过实验和计算流体动力学(EFD / CFD),研究了锥形超音速双翼飞机在启动过程中的气动特性和小翼的影响。使用了三种类型的锥形双翼飞机模型:小翼仅覆盖翼尖的后半部分(A型);小翼覆盖整个翼尖(B型);在600 mm×的超音速放空风洞中进行了实验位于JAXA航天航空科学研究所高速风洞设施的600 mm横截面,流动条件从M_∞= 1.5到1.9,增量为0.1,使用压敏涂料测量管道上的压力分布进行了CFD仿真以与实验进行比较并详细研究马赫数的影响。发现没有小翼的锥形双翼飞机开始于M_∞之间分别为1.8和1.9.N型和A型之间的起始马赫数相差很小;另一方面,B型的起始马赫数比N型高约0.05。

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