nemfrog:Air flow at high subsonic speed round a wing section in a wind tunnel - a picture taken at one millionth of second. Space encyclopaedia. 1960.

nemfrog:Air flow at high subsonic speed round a wing section in a wind tunnel - a picture taken at one millionth of second. Space encyclopaedia. 1960.

tags: ,

from: https://rsevn.tumblr.com/post/187627559162