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The He 70 was produced as a commercial and military high-performance monoplane, powered by a 469.5kW or 559kW BMW VI engine. It first flew on 1 December 1932 as a commercial type, accommodating a pilot, navigator and four passengers (an additional folding seat for a passenger was provided behind the pilot). Aft of the passenger cabin was a baggage compartment. The low cantilever wings tapered in chord and thickness and were of spruce construction, planked with plywood. The fuselage was an oval duralumin monocoque, and the landing gear was retractable. Deutsche Luft-Hansa received 14 aircraft, although actual production of the passenger-carrying variants was 28.
Meanwhile the He 70's military potential had not gone unnoticed and, following the delivery to the Luftwaffe of a number of He 70D for communications duties, the He 70E and He 70F appeared as three-seat light-bombing and reconnaissance aircraft respectively. Only the F entered production, numbers serving with the Luftwaffe and going to the Condor Legion and the Nationalist forces in Spain during the Civil War. The production total of nearly 300 military He 70 included 18 He 170A exported to Hungary during 1937-38, each of these powered by a 678kW Gnome-Rhone 14K Mistral Major radial engine and armed with two 7.8mm Gebauer machine-guns for defence.
| MODEL | He-70D |
| CREW | 1-2 |
| PASSENGERS | 4-5 |
| ENGINE | 1 x BMW VI 7.3, 559kW |
| WEIGHTS |
| Take-off weight | 3640 kg | 8025 lb |
| Empty weight | 2530 kg | 5578 lb |
| DIMENSIONS |
| Wingspan | 14.80 m | 48 ft 7 in |
| Length | 11.70 m | 38 ft 5 in |
| Height | 3.25 m | 10 ft 8 in |
| Wing area | 36.51 m2 | 392.99 sq ft |
| PERFORMANCE |
| Max. speed | 360 km/h | 224 mph |
| Ceiling | 5485 m | 18000 ft |
| Range | 1250 km | 777 miles |
 | A three-view drawing (1000 x 719) |
| Raymond G. Wiles, www.airmanwiles(@)yahoo.com, 26.01.2008 Do you have any other aircrft aavailable | | Christopher Crossley, chrisrccrossley(@)hotmail.com, 31.10.2007 On June 3, 1936, the then-chief of staff of the Luftwaffe, Lt. Gen. Walther Wever, who was bound for Berlin to attend the funeral of a World War I aviator, was killed along with his flight mechanic when taking off in an He 70 at Dresden. He had inadvertently forgotten to release the aileron locking controls after allegedly neglecting to conduct a ground check of the aircraft beforehand.
Source: Corum, James S. (1997) "The Luftwaffe: Creating the Operational Air War, 1918-1940", Lawrence (KS), University of Kansas Press, p.179. | | Bob, bigbangsops(@)f2s.com, 05.09.2007 An He70 was bought by Rolls Royce in 1936-37 to use as an engine testbed as several engineers could monitor the engine in flight |
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