| 词条 | Dornier Do 317 | |||||||||||||||||
| 释义 |
The Dornier Do 317 was a planned German heavy bomber of World War II. Design and developmentIn June 1940, Dornier produced plans for further development of the Do 217, which would have a pressurized cabin and more powerful engines (DB 604 or Jumo 222). Designated Do 317, it was one of the proposals submitted to the RLM for the "Bomber B" project. Two versions of the Do 317 were proposed: the simplified Do 317A, powered by two DB 603A engines and featuring conventional defensive armament, and the more advanced Do 317B with the heavy 1.5 tonnes apiece, counter-rotating DB 610A/B "power system" engines, remotely aimed Fernbedienbare Drehlafette (FDL)-style gun turrets, heavier bombload, and an extended wing. Six prototypes of the Do 317A were ordered, and the first of these, the Do 317 V1, commenced its flight test program on 8 September 1943. The Do 317 V1 was very similar in appearance to the later Do 217K and -M subtypes, with a visually reframed slight variation of its multiple glazed-panel "stepless cockpit", fully glazed nose design that accommodated a pressurized cabin provision, and triangular tailfins. Trials with the Do 317 V1 revealed no real performance advance over the Do 217, so it was decided to complete the remaining five prototypes without cabin pressurization equipment and fit them out with FuG 203 Kehl radio guidance transmitting gear to employ them as Henschel Hs 293 missile launchers. In this form, the prototypes were redesignated Do 217R. At this time, the Do 317B project was abandoned due to changing wartime conditions. Specifications (Do 317A){{Aircraft specs|ref=Die Deutsche Luftrüstung 1933–1945[1] |prime units?=met
Do 317B - {{convert|26|m|ft|abbr=on|0}} |height m=5.44 |wing area sqm=68 |gross weight kg=20,140 |gross weight note= Do 317B (estimated) - {{convert|24,000|kg|lb|abbr=on|0}}
Do 317B - 2x Daimler-Benz DB 610A/B (twinned DB605 engines) rated at {{convert|2171|kW|hp|abbr=on|0}}
Do 317B (estimated) - {{convert|670|km/h|mph|abbr=on|0}} at {{convert|7,620|m|ft|abbr=on|0}} |cruise speed kmh=420 |cruise speed note= Do 317B (estimated) - {{convert|537|km/h|mph|abbr=on|0}} |stall speed kmh=133 |range km=3,980 |range note= Do 317B (estimated) - {{convert|3,600|km|mi|abbr=on|0}} |ceiling m=9,800 |ceiling note= Do 317B (estimated) - {{convert|10,515|m|ft|abbr=on|0}}
Do 317A 3 × {{convert|13|mm|in|abbr=on|3}} MG 131 machine gun in upper turret, rear dorsal, and rear ventral positions 2 × {{convert|7.92|mm|in|abbr=on|3}} MG 81 machine gun in nose 1 × {{convert|15|mm|in|abbr=on|3}} MG 151 cannon in nose Do 317B 4 × {{convert|13|mm|in|abbr=on|3}} MG 131 machine gun in forward and rear dorsal turrets 2 × {{convert|7.92|mm|in|abbr=on|3}} MG 81 machine gun in a nose barbette 1 × {{convert|20|mm|in|abbr=on|3}} MG 151/20 cannon in a tail barbette |bombs= Do 317A Up to {{convert|4,000|kg|lb|abbr=on|0}}of disposable stores Do 317B Up to {{convert|9,200|kg|lb|abbr=on|0}}of disposable stores }} See also{{Aircontent|related=* Dornier Do 217 |similar aircraft=* Focke-Wulf Fw 191
|sequence= |lists=* List of military aircraft of Germany |see also= }} Notes1. ^{{cite book|last=Nowarra|first=Heinz J.|title=Die Deutsche Luftrüstung 1933–1945 : Band 1 Flugzeugtypen AEG - Dornier|publisher=Bernard & Graefe Verlag|location=Koblenz|date=1993|volume=1|page=41|isbn=3-7637-5465-2}} References{{commons category|Dornier aircraft}}{{refbegin}}
7 : Abandoned military aircraft projects of Germany|Dornier aircraft|German bomber aircraft 1940–1949|World War II heavy bombers of Germany|High-wing aircraft|Aircraft first flown in 1943|Twin piston-engined tractor aircraft |
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