P-42 (record-breaking SU-27) could accelerate through vertical, 90 degrees
flight.

Nele

NULLA ROSA SINE SPINA

Jim Thomas wrote in message ...
I hadn't read this post at my last reply. This description sounds
accurate for the Streak Eagle flights. I'm still not sure that the
aircraft accelerated through Mach 1 in vertical flight; it sure could
have, if it did so during an Immelman!

Jim Thomas