Helicopter Bell H-12. Specifications. A photo.
Helicopter Bell H-12. Specifications. A photo.

Helicopter Bell H-12. Specifications. A photo.


Bell H-12 - American multi-purpose helicopter, developed by «Bell Helicopter» in 1946 year.


Photo Bell H-12


The design of the helicopter model Bell H-12, also known under the name Bell 48, was started by American engineers-designers in 1944. The helicopter had to be exclusively military, and used to carry out tasks such as transporting people, transporting goods, carrying out observation flights and patrolling the terrain. This model could not be positioned as an independent combat aircraft, however, for initiators of the beginning of work in this direction, in particular, it concerns the command of the US Armed Forces, it was not required, since in fact, for similar purposes, aircraft of this type and Was not planned to be applied.

Despite the fact that the draft of the helicopter Bell H-12 certainly are promising, the military command of the armed forces of the USA, has decided to abandon the use of such a helicopter as irrational, and therefore, for the whole period of development, aircraft manufacturers of the company «Bell Helicopter» it was built only 12 aircrafts of this model, a part of which was used for testing in the armed forces of the country.


Bell H-12 photo


Depending on the modifications and variants of the aircraft on board the helicopter can carry up to 10 people, including one pilot and 9 soldiers, while, in addition to the transportation of people, helicopter Bell H-12 could also be used for the transport of goods, the only condition which was to preserve the dimensions of the cargo and not to exceed the maximum take-off mass of air tools.

Experts believe that the main reason for not using model helicopters Bell H-12, is their low maneuverability that does not always satisfy the goals and objectives set by the military.


Helicopter Bell H-12


The power plant of the Bell H-12 helicopter consists of one Pratt & Whitney R-1340-55 Wasp nine-cylinder radial aircraft engine, which, with a thrust of 600 hp, allowed the aircraft to reach a speed of 170 km / h. (maximum rate). The maximum flight range of this aircraft is 485 kilometers, which, along with the speed, is very acceptable.

The options helicopter Bell H-12:

  • Bell Model 42 - 5-seater prototype of the helicopter intended to be used in civil aviation;
  • Bell Model 48 - The military version of the version of Bell Model 42;
  • Bell Model 48A - Ten-option of military aircraft, equipped with a more powerful force ustanvokoy;
  • Bell XR-12 - Prototype aircraft equipped 8 places;
  • Bell R-12A - The production version of the helicopter;
  • Bell XR-12B - 12-seater prototype of the helicopter, with improved power plant;
  • Bell YR-12B - production version of the Bell XR-12B version, equipped with a Pratt & Whitney R-1340-55 aircraft engine;
  • Bell XH-12 - An analog version of Bell XR-12;
  • Bell XH-12B - An analog version of Bell XR-12;
  • Bell YH-12B - An analog version of Bell YR-12.


Specifications Bell H-12.


  • Crew: 1 people;
  • Capacity: 9 people (depending on version);
  • helicopter length: 17,3 m (depending on version).
  • The height of the helicopter: 3,44 m (depending on version).
  • The diameter of the rotor: 14,48 m (depending on version).
  • Weight of empty helicopter: 1870 kg. (Depending on version);
  • Maximum takeoff weight: 2850 kg. (Depending on version);
  • Cruising speed: 145 km \ h. (Depending on version);
  • Maximum flight speed: 170 km \ h. (Depending on version);
  • Maximum flight distance: 485 km .;
  • Maximum flight height: 4570 m .;
  • Powerplant: Pratt & Whitney R-1340-55 Wasp (depending on version);
  • Power: 600l.s. (Depending on version).


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