X-15 carry before launch

X-15 carry before launch

This photo from a chase plane probably was taken shortly before launch.  The visible hydrogen peroxide jettison is part of item 6 in the countdown checklist (1962 procedures),  Less obvious vapor emissions probably are from simultaneously tested jettison of LOX (liquid oxygen) and ammonia.

This image was scanned from an original photographic print of a US Air Force photo.


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