Developed in 1936 as a mailplane for Deutsche Lufthansa, the Heinkel He-116 made use of design features of the He-70 and He-111, particularly the elliptical wing and tail surfaces. The aircraft was originally to be powered by four Hirth V-engines producing 500 hp each, but theses were not available in time so the 240 hp Hirth HM 508 was substituted. Eight civil aircraft were built with the designation He-116A-0, the first making its maiden flight in the summer of 1937. two were purchased by Manchurian Air transport and made their 9,530 mile delivery flights from Berlin to Tokyo between the 23 and 29 of April 1938, in a time of 54 hours 17 minutes. Another was modified for record breaking, with uprated engines, a wing of increased span and area and provision for possible rocket assisted takeoff equipment. Its designation was He-116R and it set a distance record of 6,214 miles in 48 hours and 18 minutes, beginning on the 30 of June 1938. An He-116B long range high altitude recon variant was also developed in small numbers, the last two civil aircraft being converted as prototypes. A total of 6 were produced
Each aircraft of the aircraft of both series comprised a standard He-70 fuselage with gunner positions faired over as well as a shortened and symmetrical glazed nose section much like that of a He-111. The wing was an enlarged version of the wing fitted to the He-112 with nacelles and mounts for four Hirth engines. The inboard nacelles carried the standard He-111 landing gear. The aircraft stayed true to the dimension of the He-70 including the same span as an He-111H-3 despite the different wing.
(Data applies to B series)
General characteristicsCrew: 3 to 4
Length: 13.70 m (44 ft 11 in)
Wingspan: 22.0 m (72 ft 2 in)
Height: 3.3 m (10 ft 10 in)
Wing area: 62.9 m² (677 ft²)
Empty weight: 4,050 kg (8,930 lb)
Loaded weight: 7,130 kg (15,720 lb)
Powerplant: 4 Hirth HM 508C air-cooled, inverted V8 engines, 182 kW (244 hp) each
PerformanceMaximum speed: 233 mph, 375 km/h (202 kn)
Range: 2,170 mi, 3,500 km (1,900 nmi)
Service ceiling: 7,600 m (24,900 ft)
Wing loading: 113 kg/m² (23 lb/ft²)
Power/mass: 100 W/kg (0.06 hp/lb)









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