In late 1944, the RLM went to manufacturers for a new high-altitude fighter with excellent performance; the Ta 152H (an inline engined version of the Focke-Wulf Fw 190) was in limited production but Heinkel was contracted to design an aircraft and Siegfried Günter was placed in charge of the new Projekt 1076. The new design was similar to the He 100 but many detail changes resulted in an aircraft that looked all new. It sported a new and longer wing for high-altitude work, which lost the inverted gull wing bend and was swept forward slightly at 8°. Flaps or ailerons spanned the entire trailing edge of the wing giving it a rather modern appearance. The cockpit was pressurized for high-altitude flying and covered with a small bubble canopy that was hinged to the side instead of sliding to the rear. Other changes that seem odd in retrospect is that the gear now retracted outward like the original Bf 109 and the surface cooling system was re-introduced. Planned armament was one MK 103 cannon firing through the propeller hub and two wing mounted 30mm MK 108 cannons.