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采用七孔探针在低速风洞中对双三角翼截面和尾流进行流场测量,并进行翼表面测压试验,研究了75°/45°双三角翼在中等迎角到大迎角下的旋涡特性。试验表明,用七孔探针测量空间流场,结果准确可靠。75°/45°双三角翼的流态特点是,由于内翼涡对外翼涡的诱导作用,使外翼涡趋于稳定,在一定迎角下,两涡发生绕合与合并,随迎角增加,合并涡破裂点前移。
The flow field of the double delta wing and the wake were measured by a seven-hole probe in a low-speed wind tunnel and the surface pressure test of the wing was carried out. The effect of the 75 ° / 45 ° double delta wing at medium angle of attack to high angle of attack Vortex characteristics. Experiments show that the use of seven-hole probe to measure the spatial flow field, the results are accurate and reliable. The flow pattern of the 75 ° / 45 ° double delta wing is that the outer vortex tends to be stable due to the induction of the outer vortex vortex of the inner vortex vortex, and the two vortices are wound and merged at a certain angle of attack, Increase, the merger vortex rupture point forward.