The Lippisch P.13a was an experimental ramjet-powered delta wing interceptor aircraft designed in late 1944 by Dr. Alexander Lippisch for Nazi Germany. The aircraft never made it past the drawing board but testing of wind-tunnel models in the DVL high-speed wind tunnel showed that the design had extraordinary stability into the Mach 2.6 range.
It is the successor of the Akaflieg Darmstadt-Akaflieg München DM1 ,
Lippisch P.13a is the predecessor of the Convair XF-92.