https://twitter.com/YHI_aerospace/statu ... XCMc3npN5Q
Yeah, Nagoya University in Japan tested First Gundam's atmospheric reentry in a hypersonic wind tunnel.
The paper can be read here: https://www3.chubu.ac.jp/documents/facu ... 981e1d.pdf (This is what the tweet took the image from, in part 6.5.)
https://www.jsass.jp/conference/nenkai41.php (A30 of this conference is ref 29 of the above paper, which is the actual experiment, but the link consist of only the first page of the paper)