Název: Name: | Dewoitine D.770 | Dewoitine D.770 |
Originální název: Original Name: | Dewoitine D.770 | |
Kategorie: Category: | bitevní letoun | attack aeroplane |
Výrobce: Producer: | DD.MM.1939-DD.05.1939 Société Nationale des Constructions Aéronautiques du Midi, Toulouse | |
Období výroby: Production Period: | DD.MM.1939-DD.05.1939 | |
Vyrobeno kusů: Number of Produced: | 1 | |
První vzlet: Maiden Flight: | 27.06.1939 | |
Osádka: Crew: | 3 | |
Základní charakteristika: Basic Characteristics: | ||
Vzlet a přistání: Take-off and Landing: | CTOL - konvenční vzlet a přistání | CTOL - conventional take-off and landing |
Uspořádání křídla: Arrangement of Wing: | jednoplošník | monoplane |
Uspořádání letounu: Aircraft Concept: | klasické | conventional |
Podvozek: Undercarriage: | zatahovací | retractable |
Přistávací zařízení: Landing Gear: | kola | wheels |
Technické údaje: Technical Data: | ||
Hmotnost prázdného letounu: Empty Weight: | 3998 kg | 8814 lb |
Vzletová hmotnost: Take-off Weight: | 6097 kg | 13442 lb |
Maximální vzletová hmotnost: Maximum Take-off Weight: | ? kg | ? lb |
Rozpětí: Wingspan: | 15,200 m | 49ft 10,42in |
Délka: Length: | 9,750 m | 31ft 11,86in |
Výška: Height: | 3,230 m | 10ft 7,17in |
Plocha křídla: Wing Area: | 29,85 m2 | 321.3 ft2 |
Plošné zatížení: Wing Loading: | 204,35 kg/m2 | 41.85 lb/ft2 |
Pohon: Propulsion: | ||
Kategorie: Category: | pístový | piston |
Počet motorů: Number of Engines: | 2 | |
Typ: Type: | Hispano-Suiza 12Yjrs/12Ykrs, kapalinou chlazené vidlicové dvanáctiválce s protoběžným chodem, výkon 772 kW. Vrtule trojlisté stavitelné. | Hispano-Suiza 12Yjrs/12Ykrs, twelve-cylinder liquid-cooled opposed-rotation Vee engine, rated at 1,050 hp, driving three bladed variable-pitch propellers. |
Objem palivových nádrží: Fuel Tank Capacity: | 1 200 l | 264 UK gallons |
Výkony: Performance: | ||
Maximální rychlost: Maximum Speed: | 502 km/h v 3200 m | 311.9 mph in 10499 ft |
Cestovní rychlost: Cruise Speed: | 440 km/h v 2800 m | 273.4 mph in 9186 ft |
Rychlost stoupání: Climb Rate: | ? m/s | ? ft/min |
Čas výstupu na výšku: Time to Climb to: | ? min do ? m | ? min to ? ft |
Operační dostup: Service Ceiling: | 8300 m | 27231 ft |
Dolet: Range: | 850 km | 528.2 mi |
Maximální dolet: Maximum Range: | 1250 km | 776.7 mi |
Výzbroj: Armament: | 1x kanón Hispano-Suiza HS-404 ráže 20 mm s 60 náboji a 2x kulomet MAC 1934 ráže 7,5 mm (po 500 nábojích pro každý) 1x pohyblivý kulomet MAC 1934 ráže 7,5 mm na konci horní kabiny s 582 náboji a 1x zdvojený pohyblivý kulomet MAC 1934 ráže 7,5 mm v zadním spodním střelišti (582 nábojů pro každou hlaveň). Pumový náklad: do 400 kg pum (8x 50 kg) | One forward-firing 0.79 inch Hispano-Suiza HS-404 cannon in nose, 60 rounds and two forward-firing 0.295 inch MAC 1934 machine guns in nose, 500 rounds each, one flexible 0.295 inch MAC 1934 machine gun in dorsal turret, 582 rounds and one twin machine gun 0.295 inch MAC 1934 in ventral turret, 582 rounds each. Bomb load: eight 120 lb bombs. |
Uživatelské státy: User States: | | |
Poznámka: Note: | Viz stručná historie typu. | The specification by the Air Ministry from 17 August 1937 included the creation of a three-men-crew bomber attack aircraft category AB3 (Assault-Bombardier) with cannon armament. One of the first firms which presented its draft was Dewoitine. It was a twin-engine all-metal monoplane with a longitudinal placement of the crew. Starting in October 1938 the firm's engineers, commissioned by the Air Force, had developed several options for a ground attacker, the most important among these were the D.770 and D.771. The first flight was done in June 26, 1939 by test pilot Marcel Doret, who was dissatisfied with the flight performance of the new machine. Although the prototype had good speed performance, it was not sufficiently stable in flight. Tests of D.770.01 lasted for about 5 months, however, the specialists of the Dewoitine firm did not achieve significant improvements. At the end of 1939, D.770.01 was sent to the research center for wind tunnel tests. The results of these test only proved once again that this aircraft was far from being perfect and will not go to mass production. Program for further testing was decided to be interrupted, because at that time ground attackers Breguet Br.691 / 693 were produced in numbers, and for 1940, the appearance of large quantities of the multi-purpose bomber Bloch MB.175 was expected. These aircraft were carrying a large bomb load and had much better operational and technical performance. |
Zdroje: Sources: | L+K 12/1991, Václav Němeček, Letadla 1939-45, Dewoitine 770/771. http://www.airwar.ru/enc/bww2/d770.html www.aviafrance.com archiv autora |