航空学报 > 1986, Vol. 7 Issue (2): 212-216

应用于风洞密度场测量的双全息术

丁汉泉, 陈兴一, 陈守之   

  1. 北京航空学院
  • 收稿日期:1985-03-06 修回日期:1900-01-01 出版日期:1986-04-25 发布日期:1986-04-25

APPLICATION OF DUAL HOLOGRAM INTERRFEROMETRY TO DENSITY FIELD DETERSMINATION IN WIND TUNNEL

Ding Hanquan, Chen Xingyi, Chen Shouzhi   

  1. Beijing Institute of Aeronautics and Astronautics
  • Received:1985-03-06 Revised:1900-01-01 Online:1986-04-25 Published:1986-04-25

摘要: 当今,脉冲双曝光全息术已普遍应用于高速风洞流场参量的探测。它是在一张全息底片上记录流场处于两个瞬态的全息图。如果在两次曝光之间,参与记录的所有元件不发生相对位移,则再现干涉图将准确地反映其相对参量。但在风洞试验中,由于吹风时振动的强烈干扰,很难避免这些元件不受扰动,致使干涉图上掺进离散背景条纹而失真。

Abstract: This paper presents the make use of the dual hologram interferometry for obtaining finite fringes holographic interferogram of the axisymmetric flow field with shock waves, and the density distributions computed by four mathematical models.