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Tupolev ANT-8

From Wikipedia, the free encyclopedia
ANT-8
RoleMaritime patrol aircraft
Type of aircraft
ManufacturerTupolev
First flight30 January 1931
StatusRetired
Primary userTupolev Factory
Number built1

TheANT-8 was an experimentalflying boat designed byTupolev. It was designated the "MDR-2" (MDR meaningMorskoi Dalnii Razvedchik, or Naval Long-Range Reconnaissance) by the military.

Design and development

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Tupolev and theTsAGI were asked to build the ANT-8 in 1925, but other projects were deemed more important. Thus, little was completed on the ANT-8. Finally, in 1930, with Ivan Pogosski leading, actual work was started on the aircraft. Its first flight was on January 30, 1931, piloted by S. Riballschuk. Shortly after the ANT-8 flew for the first time, theANT-14 lifted off the ground.

Construction

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The ANT-8 was chosen to be made entirely from metal, with aDuralumin hull and similar wings to theTupolev R-6. Thefuselage received much attention from the designers and it was decided to have the floats included in the load-bearing structure. Power came from two pusherBMW VIengines mounted over the wings. The aircraft was fitted with an enclosed cockpit for the two pilots, while turrets were mounted in the bow and aft of the wing, each mounting twoDA-2machine guns. Up to 500 kg (1,102 lb) of bombs could be carried under the wing roots.[1]

Although the aircraft demonstrated excellent seaworthiness, and Tupolev learned much about flying boat hulls from it, continuation of the ANT-8 project was deemed unnecessary by theSoviet Navy, as it was believed that it was obsolete and would soon be superseded by theChetverikov MDR-3. Only one was built, although its hull was modified several times.

Operators

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 Soviet Union

Specifications (MDR-2)

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Data fromThe Osprey Encyclopedia of Russian Aircraft 1875–1995[2]

General characteristics

  • Crew: 4-5
  • Length: 17.03 m (55 ft 10 in)
  • Wingspan: 23.7 m (77 ft 9 in)
  • Height: 5.67 m (18 ft 7 in)[3]
  • Wing area: 84 m2 (900 sq ft)
  • Airfoil:root:Tupolev A0 (20%) ;tip: Tupolev A0 (14%)[4]
  • Empty weight: 4,560 kg (10,053 lb)
  • Gross weight: 6,920 kg (15,256 lb)
  • Max takeoff weight: 8,160 kg (17,990 lb)[3]
  • Powerplant: 2 ×BMW VI V-12 water-cooled piston engines, 507 kW (680 hp) each
  • Propellers: 2-bladed fixed-pitch propellers

Performance

  • Maximum speed: 203 km/h (126 mph, 110 kn)
  • Cruise speed: 166 km/h (103 mph, 90 kn)
  • Range: 1,062 km (660 mi, 573 nmi)
  • Endurance: 5 hours
  • Service ceiling: 3,350 m (11,000 ft)
  • Time to altitude: 1,000 m (3,300 ft) in 7 minutes
  • Power/mass: 0.066 kW/kg (0.040 hp/lb)

Armament

  • Guns: 4 × DA-2 machine guns in nose and dorsal turrets
  • Bombs: Up to 500 kg (1,102 lb) bombs

References

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  1. ^Gunston 1995, p.389.
  2. ^Gunston 1995, p.390.
  3. ^abDuffy and Kandalov 1996, p.208.
  4. ^Lednicer, David."The Incomplete Guide to Airfoil Usage".m-selig.ae.illinois.edu. Retrieved16 April 2019.

Bibliography

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Wikimedia Commons has media related toTupolev ANT-8.
  • Duffy, Paul and Andrei Kandalov. (1996)Tupolev, The Man and His Aircraft. Warrendale, PA: Society of Automotive Engineers.
  • Gunston, Bill.The Osprey Encyclopedia of Russian Aircraft 1975–1995. London: Osprey, 1995.ISBN 1-85532-405-9.
Tupolev aircraft
Civilian
Military
Unmanned
Experimental
Proposed,
cancelled
Early period
Sovietscout aircraft designations, 1923–1940
Scout (R)
Shipboard scout (KR)
Cruiser scout (KR)
  • KR-11
  • KR-21
  • KR-31
  • KR-41
  • KR-51
  • KR-6
Shipboard catapult-scout (KOR)
Scout seaplane (MR)
Short-range scout seaplane (MBR)
Long-range scout seaplane (MDR)
Open-sea scout seaplane (ROM)
Descriptors
1 Unknown/not assigned
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