According to CCTV, the reporter learned from the aviation industry group that on May 12, China's new multi-purpose helicopter ac352 completed the last flight test subject approved by the Civil Aviation Administration and landed steadily on Jiansanjiang wetland airport in Heilongjiang. This marks the full completion of the approval and test flight of ac352 helicopter and the countdown of model certification.
The test flight of ac352 helicopter specially approved by the Civil Aviation Administration includes 87 subjects such as class a takeoff and landing, airspeed indication system, level flight performance, climb performance, stability and low-speed control characteristics, with a total flight time of 37.25 hours.
During the flight test, CAAC has systematically evaluated the performance, handling quality and equipment operation of ac352 helicopter by checking the flight test data submitted by the applicant.
Subsequently, ac352 helicopter will carry out function and reliability test flight.
Ac352 helicopter is an advanced medium-sized multi-purpose helicopter. This model adopts conventional pneumatic layout, dual engine, wide fuselage, retractable wheel landing gear at the first three points, and the cockpit space can carry 14 to 16 passengers, which can meet the diversified needs of users.
Ac352 helicopter made its first successful flight in Harbin in December 2016. In November 2019, it officially entered the applicant's clause verification test flight.
The advent of ac352 helicopter fills the gap in the 7-ton pedigree of Chinese civil helicopters, which is of great significance to promote the seriation development of helicopters and expand the scale of civil helicopter industry in China
It is reported that ac352 helicopter is a 7-ton civil helicopter developed in accordance with the airworthiness regulations of cs29 / ccar-29. It adopts a variety of mature advanced technologies such as 4-axis digital automatic flight control system (AFCS), highly integrated avionics, 5-rotor ball flexible main hub and crash resistant fuselage. It has the ability to fly day and night under visual and instrument flight rules.
The maximum takeoff weight is 7500kg, the maximum economic cruise speed is 280 km / h, and the maximum range is more than 1000 km.
At the beginning of the development of ac352 helicopter, the comprehensive support project was fully implemented to optimize the preventive maintenance procedure. The fuel consumption rate per kilometer is significantly lower than that of similar engines, which effectively improves the range capacity and endurance time of ac352 helicopter.
High strength aluminum alloy is selected as the main structural material of the fuselage, which not only meets the strength requirements, but also reduces the production cost of the aircraft.
In addition, the service life of ac352 helicopter rotor system and fuselage can reach 20000 hours, and the overhaul interval of transmission system and engine can reach 5000 hours, which greatly reduces the user's use cost**
