K
Kiwiguy
Guest
A friend of mine is a German translator for some leading authors on Luftwaffe aircraft types. He is a very private man and generally does not wish his name mentioned. Recently he alerted me through private correspondence that the Lippisch P.13b had been hushed up and classified top secret by the US Government post December 1944. In NARA archives you can find reports of this aircraft up until December 1944, but not afterwards.
http://en.wikipedia.org/wiki/Lippisch_P.13b
That is because my friend assures me he has come across German archival material that suggest the aircraft was successfully test flown with a coal burning ramjet engine at speeds up to Mach 1.6 before the war ended.
A smaller version of this ramjet engine was successfully test flown atop a Dornier Do-17 in the south of France.
http://en.wikipedia.org/wiki/Lippisch_P.13b
That is because my friend assures me he has come across German archival material that suggest the aircraft was successfully test flown with a coal burning ramjet engine at speeds up to Mach 1.6 before the war ended.
A smaller version of this ramjet engine was successfully test flown atop a Dornier Do-17 in the south of France.