The He 111Z Zwilling was a design that entailed the merging of two He 111s. The design was originally conceived to tow the Messerschmitt Me 321 glider. Initially, four He 111 H-6s were modified. This resulted in a twin-fuselage, five-engine aircraft. They were tested at Rechlin, and the pilots rated them highly. A batch of 10 were produced and five were built from existing H-6s. The machines were joined by a centre wing formed by two sections 6.15 m (20 ft) in length. The powerplants were five Jumo 211F engines at 1,000 kW (1,340 hp) each. Total fuel capacity was 8,570 L (2,260 US gal). This was increased with the addition of four 600 L (160 US gal) drop tanks. It could tow a Gotha Go 242 glider or Me 321 for up to 10 hours at cruising speed. It could also remain airborne if the three centralised powerplants failed. The He 111 Z-2s and Z-3s were also planned as heavy bombers carrying 1,800 kg (3,970 lb) of bombs and having a range of 4,000 km (2,500 mi). The ETC extensions allowed for a further four 600 L (160 US gal) drop tanks to be installed.

Twee uitvoeringen mogelijk;