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Heinkel He 274
S.N.C.A.C. AAS 1

he274

A four engine bomber, the Heinkel He 274 was the detail design responsibility of Societe Anonyme des Usines Farman's Suresnes factory in occupied France. Fitted with a pressurised cabin in the nose, the aircraft was powered by four 1305kW Daimler-Benz DB 603A-2 engines and featured a lengthened version of the He 177A-3 fuselage, with a new high-aspect-ratio wing and twin fins and rudders.
Two prototypes were ordered in May 1943, together with four He 274A-0 pre-production examples, which were to have 1417kW DB 603G engines. Despite an unsuccessful German attempt to destroy the almost-complete first prototype when they retreated from Paris in July 1944, the aircraft was finished by the French after the liberation. The first flight was from Orleans-Bricy on 30 December 1945 as the AAS 01 A.
Two prototypes were built in France by the S.N.C.A.C.
It was used later to test-fly models of such aircraft as the Aerocentre NC 270 and the Sud-Ouest SO 4000.

He 274
Engines: 4 x Daimler-Benz DB-603A2, 1850 hp
Propellers: metal three-bladed variable pitch
Wingspan: 44,20 m
Length: 23,80 m
Height: 5,50 m
Wing area: 142,00 sq.m
Aspect ration: 13,2
Fuel: 10130 lt
Empty weight: 21300 kg
Max weight: 38000 kg
Wing loading: 267,605 kg/sm.m
Power loading: 5,135 kg/hp
Max speed: 580 km/h
Cruise speed: 180 km/h
Ceiling: 14300 m
Range: 4250 km
Endurance: 7 hours 45 min

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