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. Production prototype 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 worsening war situation led to the expedited, but risky, approach of building a full-scale prototype in parallel with detail construction and continuing statistical calculation, while existing components such as the wings (Me 262), landing gear (extended Bf 109), and flight components were utilized where feasible. It was also intended for the test flights to be conducted with 35, 40, and 45-degree wing sweep. Production of the V1 prototype was begun at Messerschmitt's Bavarian Oberammergau Complex with a projected first flight in June 1945. The P.1101 V1 prototype was of duralumin fuselage construction, retaining the outer wing section of the Me 262, but with larger slats and, as mentioned previously, the wing sweep could be adjusted on the ground from 30, 40, to 45 degrees; this was for testing only and never intended as an operational feature. The fuselage-mounted tandem intakes of the preliminary designs were replaced by a single nose intake, and the canopy became a bubble design, which afforded better allround vision than the initial integrated canopy offered. The production prototype also incorporated a more conventional swept tail design, which was constructed out of wood and remained mounted on the tapered tailboom. A T-tail was also designed. The tricycle undercarriage consisted of a steerable, rearward-retracting nosewheel and long forward-retracting wing root-mounted main gear. The prototype was fitted with an apparently inoperable Heinkel He S 011 jet engine, but given the non-availability of this engine, a Jumo 004B was fitted for test flights. (Changing the type of engine was meant to be comparatively easy.) In addition, the production model was to be equipped with a pressurized cockpit and armored canopy, and to be armed with two or four MK 108 cannons, Ruhrstahl X-4 air-to-air missiles, or both. Postwar By the time an American infantry unit discovered the Oberammergau complex on 29 April 1945, the V1 prototype was approximately 80% complete. The wings were not yet attached and appear to have never had skinning applied to their undersides. The airframe was removed