"3" represents "Sansheng" in China traditional culture and symbolizes the vigorous development of China helicopter industry; "1" represents the technical level of the helicopter; "3" indicates the number of turboshaft engines installed on the helicopter. [Edit this paragraph] Technical performance AC3 13 Optimized aerodynamic shape of airframe, advanced profile and configuration of rotor blades, high hovering efficiency of rotor and strong lateral wind resistance of tail rotor have broken through the bottleneck technology of flight performance limitation of large transport helicopters in China, and have the ability to fly in plateau, which can better meet the demanding requirements of helicopter flight performance in complex areas such as mountainous areas.
After the test flight, its overall performance has reached the advanced technical level in the world today. Advanced turboshaft engine, transmission system with high power transmission capacity, spherical flexible composite rotor system and integrated avionics system are adopted to improve maintainability and comfort, and the structure and system safety are upgraded in an all-round way. This is a medium and large civil aircraft independently developed by China. Looking at its overall performance, it can rank among the world's advanced helicopters.
Engine development is one of the core technologies of helicopter development. Breakthroughs have been made in the development of key helicopter turboshaft engines in China. The first full indirect heating medium pressure combustion chamber performance tester developed by AVIC Power Research Institute realized the change of heating mode from direct heating to indirect heating, and its variable frequency oil supply system and afterburner were patented respectively. At present, turboshaft engines assembled by helicopters in China are basically imported or copied. The successful development of this testing machine provides a solid experimental research platform for the research of the first key turboshaft engine combustion chamber with completely independent intellectual property rights in China. AC3 13 cockpit
The rotor system adopts advanced composite blades and titanium alloy spherical flexible main hub. The fuselage is made of metal and composite materials, and composite materials account for 50% of the whole machine. The avionics system adopts the internationally accepted 429 data bus to realize digital integrated display control.
The performance of the whole machine has reached the level of the international third-generation helicopter. The key technologies of the breakthrough mainly include: the transmission system meets the safety requirements of "dry operation" for 30 minutes; The fuel system and the structure of the engine body meet the safety requirements of anti-collision and lightning strike; The driver's seat and the co-driver's seat passed the anti-collision dynamic safety test; The airframe structure, control system and rotor system meet the safety requirements of bird impact; Airborne equipment meets the design requirements of lightning strike and high-intensity radiation field protection; The cockpit layout meets the safety requirements for emergency evacuation of passengers; Rotor and composite structure meet the requirements of fatigue assessment based on damage tolerance; The mechanical system meets the design requirements of high-energy rotor fracture protection.
AC3 13 helicopter is characterized by composite ball flexible rotor system, full authority digital electronic control of engine, large-area composite structure, integrated avionics system, digital design and manufacturing, and the latest airworthiness and safety standards. The overall technical level of China's large transport helicopters has leapfrogged from the second generation to the third generation. AC3 13 has made great progress compared with the previous models in the whole life cycle due to its emphasis on operation and maintenance detail design, life reliability design and supportability design.
AC3 13 has seven main features:
-High security. Equipped with three engines, it can continue to fly when one engine fails and land nearby when two engines fail, which greatly improves the survival probability of the people on board.
-Good three-proof performance. Designed in strict accordance with the standards of salt spray prevention, damp heat prevention and mildew prevention, it is suitable for use in harsh environments such as marine climate conditions.
-Big space. The cabin has an effective volume of 23.5 cubic meters and a height of 1.83 meters, and ordinary China people can walk upright in it. Equipped with comfortable aviation seats and interiors, it can be converted into VIP business jets as needed.
-Strong bearing capacity. When used for cargo transportation, it can carry up to 4 tons of cargo in the cabin or 5 tons of external lifting. When used for personnel transportation, it can carry up to 27 passengers, or transport 15 stretchers and a medical staff seat and workbench. Manual or electric winch can be installed in the cabin, and mooring device is left on the floor to facilitate loading, unloading and fixing of goods.
-Sailing. The maximum range of the internal fuel tank is 900 kilometers. When carrying three transition fuel tanks, the transition range can be increased to more than 1400 km.
-Excellent handling performance. The control system is ingeniously designed, with full longitudinal and transverse control linkage, supplemented by four-axis autopilot, with small operating load and good flying quality.
-Wide range of applications. It can be used normally in the temperature range of -40℃ ~+50℃, the maximum flying height can reach 6000m, and it can take off and land at the airport with an altitude of 4500m m.
It is worth noting that the "13 ton class" of AC3 13 model cannot be directly compared with the "20 ton class" of Mi -26. The "13 ton class" of AC3 13 refers to the total takeoff weight, while the "20 ton class" of Mi -26 refers to the load capacity. The total takeoff weight of Mi -26 is "55 tons". (turning)