Bell 222 is the first dual-engine light civil helicopter developed by Marshbell Helicopter Company of the United States. Its prototype made its first flight in August 1976, was approved by the Federal Aviation Administration in August 16, and was put into mass production in June1980+1October 65438+.
The rotor system of Bell 222 helicopter uses two rotor blades, the hub is made of titanium alloy, the rotor blades are not foldable, and the tail rotor uses two stainless steel blades. The fuselage of Bell 222 is a light alloy semi-hard shell structure, and the key parts are designed with damage safety. The landing gear is a hydraulic retractable front three-point landing gear, and the power unit (type B) is two turboshaft engines (LTS101-750c-1) of Mashrecoming Company, with a single takeoff power of 5 10 kW and the maximum sustained power. The cockpit of Bell 222 can generally accommodate 1 driver and 7 passengers, and can carry up to 9 passengers.
The main types of Bell 222 are: Bell 222A basic type; The improved Zhong 222B Bell 222 executive model is equipped with a full set of instrument flight equipment and a full set of automatic flight control system for single and double pilots; Bell 222UT is a universal type, and the landing gear is a tubular sled. The skid is equipped with detachable wheels for ground control, and emergency floating system, auxiliary fuel tank and avionics are also optional. The following is the data of Bell 222B.
Dimension data: empty weight is 2223 kg, and the maximum takeoff and landing weight is 3800 kg.
Weight data: empty weight 14800 kg, maximum takeoff weight for vertical takeoff 2 1545 kg, and short takeoff 24947 kg.
Performance data: (maximum takeoff weight, international standard atmosphere) maximum speed is 278 dry meters/hour, cruising speed is 259 dry meters/hour, maximum climbing rate (sea level) is 8.53 meters/second, service ceiling is 48 15 meters, hovering height is 2 165 meters with ground effect, and when there is no ground effect/.
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