Convair B-58 Hustler rocket sled designed to evaluate different ejection seat designs.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...d_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...ocket_sled.jpg
Previously:
https://www.homemadetools.net/forum/...377#post185309
https://www.homemadetools.net/forum/...431#post158447
https://www.homemadetools.net/forum/...645#post139710
https://www.homemadetools.net/forum/...009#post133975
https://www.homemadetools.net/forum/...505#post166568