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| sleevevalve, e-mail, 30.10.2016 17:38 Google "NASA SUGAR Volt" The wind tunnel model for this hybrid electric aircraft concept looks very similar to the Hurel-Dubois trussed wing. reply | | Barry, 15.01.2016 15:15 This was a member of family of aircraft centred around the high aspect ratio wing designed by Maurice Hurel. The French government sponsored the development of two prototype airliners, the HD31 and the HD32, which differed only in engine selection. The HD31 had Wright Cyclone C7BA1 and the HD32 had Pratt and Whitney 1830-92 engines. The 24 aircraft order from Air France did not materialise and other schemes came to nothing with the exception of an order from Institut Geographique National This organisation ordered eight HD34 which differed in having a glazed nose and an off set retractable nose wheel.
Spec. HD34
Span 148'7"Length 77'4" Empty 27,000 lb Gross Weight 40.900 lb
Max speed 175 mph Range 1,375 miles Service ceiling 26,000 ft reply | | goutou, 18.06.2011 07:41 hence the glider-like design. About a dozen built, I believe; at least one still existed in the late 90s. reply | | Noname, e-mail, 31.03.2020 10:24 at least one still existed in the late 90s. reply | |
| | Mike D, e-mail, 10.02.2011 15:38 Specialist design for aerial mapping and photography (role long since taken over by satellites), hence the glider-like design. About a dozen built, I believe; at least one still existed in the late 90s. reply |
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