Nikita NB-160 Durva

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Nikita NB-160 Durva
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Role Heavy Bomber
National origin Tennai
Manufacturer Nikita Aircraft
Designer Kapishan Mishaani
First flight February 1934
Introduction July 1935
Retired 1955
Status Retired
Primary user Royal Tennaiite Air Force
Produced 1935-1950
Number built 8,389
Developed into Nikita NB-170

The Nikita NB-160 Durva was a four-engined heavy bomber developed in the 1930s for the Royal Tennaiite Air Force. The bomber saw extensive use during the Siduri war were it proved a reliable and effective bomb platform.

Development

In 1932, Tennaiite military personnel undertook work to flesh out a new all- modern bomber - one that could carry a war load of at least 2,500 lb out to distances of 5,000 miles while maintaining a speed of 200 miles per hour. The Royal Tennaiite Air Force (RTAF) developed "Project-A" around these specifications and this was presented in 1933 to large-aircraft makers Cheppali and Devati. The intent was to develop an bombing platform capable of reaching (and subsequently protecting) far-off Tennaiite interests at home and abroad.

Devati's submission to the project was known internally as "Model 155". To contend with the requested range and performance, a four-engined layout was selected - power stemming from 4 x Kamala TU-1710 liquid-cooled inline piston engines of 1,100 horsepower each. This proved something of a departure for the RTAF as its contemporary stock of large aircraft relied heavily on trusty air-cooled radial piston engines. Liquid-cooled inline engines aided high-altitude performance and could be fitted within more streamlined nacelles, therefore inherently improving aerodynamic efficiency. The trade off in selecting an inline engine, however, was in the increased vulnerability to enemy fire due to the internally fragile nature of such an engine.

The wide-spanning wing elements (showcasing a combined 140 foot span) were mid-mounted. Each wing was held a pair of engine nacelles that were well-contoured into the general shape of the wing elements themselves. The cockpit was stepped (the pilot's overlooking the aircraft's nose section) and window panes accompanied the bombardier's position at the nose.

Design

Variants

  • A1
  • A2
  • A3
  • B1
  • B2
  • C1
  • C2

Operational History

Siduri War

Operators

 Tennai

Specifications (NB-160 C2)

General characteristics

  • Crew: 10 ( Pilot, co-pilot, navigator, bombardier/nose gunner, flight engineer/top turret gunner, radio operator, waist gunners (2), ball turret gunner, tail gunner)
  • Length: 35 m (114 ft 10 in)
  • Wingspan: 43 m (141 ft 1 in)
  • Height: 5.5 m (18 ft 1 in)
  • Wing area: 161.3 m2 (1,736 sq ft)
  • Empty weight: 14,500 kg (31,967 lb)
  • Gross weight: 19,285 kg (42,516 lb)
  • Max takeoff weight: 47,600 kg (104,940 lb)
  • Powerplant: 4 × Kamala TU-1717 turbosupercharged V-12 inverted liquid-cooled piston engines, 1,268 kW (1,700 hp) each
  • Propellers: 4-bladed constant-speed propellers, 5.5 m (18 ft 1 in) diameter

Performance

  • Maximum speed: 580 km/h (360 mph; 313 kn) at 7,000 m (22,966 ft)
  • Cruise speed: 377 km/h (234 mph; 204 kn)
  • Range: 8,047 km (5,000 mi; 4,345 nmi)
  • Combat range: 4,828 km (3,000 mi; 2,607 nmi)
  • Service ceiling: 13,000 m (43,000 ft)
  • Rate of climb: 24 m/s (4,700 ft/min)
  • Time to altitude: 6,000 m (19,685 ft) in 5 minutes 12 seconds

Armament

  • Guns:
    • 14 × 12.72 mm (0.501 in) machine guns (2 in the chin turret, 2 on nose cheeks, 2 staggered waist guns, 2 in upper turret, 2 in ball turret in belly, 2 in the tail and 2 firing upwards from radio compartment behind bomb bay)
  • Bombs
    • Up to 6,351 kg (14,002 lb) bombs