I suspect that a problem would have been the accuracy of the
pitot-static system to indicate supersonic flight.

The only indicator of a supersonic flight that Mutke had was a tingling in his
balls. No person on the ground reported a sonic boom, no aircraft was logged as
damaged during an inflight event by his unit on the date Mutke claims, etc.,
etc., etc. I have no doubt he went fast that day, but supersonic?? NO.

I don't think that
any of the prop planes mentioned had a flight-test-type boom stuck out
ahead of the fuselage, prop, wings, etc., not to mention any position
error corrections for transonic flight.

Same with Mutke's vanilla Me 262 fighter - no onboard instrumentation that
could have determined if transonic flight were actually occurring.

In other words, these aircraft
may have gone supersonic, but there was no way to know.

In the case of the 262, it was somewhat easier to tell, since its intakes and
rounded nose preclude any such supersonic event.

v/r
Gordon
====(A+C====
USN SAR Aircrew

"Got anything on your radar, SENSO?"
"Nothing but my forehead, sir."