[2] The single HeS 011 jet engine was to be mounted internally within the fuselage, being aspirated by two rounded intakes located on either side of the cockpit.

[2] The high tail was of a V configuration,[2] and mounted on a tapered boom which extended over and past the jet exhaust, while the cockpit was forward-mounted, with the canopy integrated into the fuselage and forming part of the rounded nose of the aircraft.

By late August 1944, the design, still in paper form, had evolved into a sleeker incarnation, with the previously stout fuselage lengthened and narrowed with a conical nose section, added in front of the cockpit.

This finalized design and associated test data were submitted to the Construction Bureau on 10 November 1944 and the selection of production materials was begun on 4 December 1944.

For example, the cannon installation was proving too crowded, the mainwheel retraction and door mechanisms were too complex, the fuselage needed a great many "strong points" to deal with loads, and the anticipated performance had fallen below RLM specifications, due to increased weight.

Since considerable work had already been done on the P.1101 design, the RLM decided to continue reduced funding in order for Messerschmitt to carry out experimental flights, testing the swept back wing at anticipated speeds up to Mach 1.

The production prototype also incorporated a more conventional swept tail design, which was constructed out of wood and remained mounted on the tapered tailboom.

)[2] In addition, the production model was to be equipped with a pressurized cockpit and armored canopy,[4] and to be armed with two or four 30 mm (1.2 in) MK 108 cannons, Ruhrstahl X-4 air-to-air missiles, or both.

Later, the prototype was shipped first to Wright Patterson AFB, then to the Bell Aircraft Works in Buffalo, New York in 1948 where an Allison J35 engine was attached.

Its tail was of the conventional type and it had a wingspan of 15.4 m and a length of 15.2 m. Data from Luftwaffe secret projects : fighters 1939–1945 [7]General characteristics Performance Armament