On April 28th, at Qixia General Airport in Yantai City, Shandong Province, a small white aircraft completed three stages of "takeoff climb cruise flight glide landing" within 38 minutes, and finally landed smoothly. This is the first domestically produced manned rotary wing aircraft that strictly follows China's civil aviation airworthiness certification regulations and procedures, and is independently developed and manufactured throughout the entire process. The overall posture of the machine is stable and the control is precise. The power, rotor, avionics, and flight control systems operate stably, and all performance indicators fully meet the design and airworthiness certification expectations. ”The successful maiden flight marks China's breakthrough in key technological bottlenecks in the industry, such as the co solidification of the fuselage and the all carbon fiber supported fuselage. It fills the gaps in the forward design, airworthiness verification, and overall manufacturing system of China's lightweight rotary wing aircraft, and ends the situation where core technology is subject to human control. The rotary wing aircraft is an aircraft between helicopters and fixed wing aircraft, which relies on the airflow blowing the rotor to rotate and generate lift during forward movement. When the engine is stopped, it can spin down without power, and has the advantages of high safety, simple operation, ultra short takeoff and landing, low altitude low-speed flight stability, etc. Its biggest highlight is' forward development '. ”Zhang Jingyuan said that the so-called "forward development" of aircraft starts from the original requirements, and carries out system design, analysis, and verification from top to bottom. The designer fully masters the aerodynamic shape, load scheme, structural topology, system logic, full chain design rights, and original data sources, that is, fully masters the core technology of the entire process, rather than conducting reverse research or imitation based on existing products. At present, most of the self rotating rotor aircraft used in China are foreign agents or authorized products. ”The technical personnel of the enterprise introduced that after two years of hard work, the project team has broken through key technologies such as aerodynamic and dynamic design of self rotating rotors, lightweight composite material structures, and airworthiness compliance verification. It has multiple independent intellectual property rights such as small aircraft autopilot and CNC full cabin rotary wing aircraft, and has established a complete capability system of "design trial production test airworthiness certification". At the time of research and development, we had to confront three major technological barriers. ”Zhang Jingyuan said that they are difficult problems in the design of all carbon fiber supported fuselage, co curing integrated molding process, rotor aerodynamics and algorithms. The co curing integrated molding process is the first application in China for manned rotary wing aircraft, while traditional rotary wing aircraft generally use non load bearing structures instead of carbon fiber integrated molding. They conducted carbon fiber force transmission path analysis and layer structure design based on the characteristics of rotary wing aircraft. ”Zhang Jingyuan introduced that the rotor of a rotary wing aircraft has no direct power drive and relies entirely on the rotation of the oncoming airflow to generate lift. It is necessary to accurately construct an aerodynamic structural coupling model to solve core problems such as aerodynamic elastic divergence, rotor vibration suppression, low altitude anti turbulence, and unpowered smooth landing, ensuring flight safety in level 9 strong winds and complex turbulent environments. When it comes to the innovation of this rotary wing aircraft, Zhang Jingyuan said that in terms of structure, we use all carbon fiber composite materials instead of traditional materials. Through mechanical simulation and strength testing, we have achieved a balance between weight reduction and high rigidity of the fuselage; In terms of craftsmanship, we have overcome the challenges of integrated manufacturing, achieving lightweight body, minimal splicing, and high reliability. In the aviation field, the biggest advantage of a rotary wing aircraft is that it can achieve a smooth landing without power during engine shutdown, with strong safety. Zhang Jingyuan said, "We take safety as the core design concept, and have core advantages such as short takeoff and landing capability and strong adaptability to the site. We can quickly take off and land in complex scenarios such as fields, township roads, mountainous forests, and offshore platforms. Therefore, we can be widely used in aviation sports, rescue, power inspection, agricultural and forestry plant protection, low altitude sightseeing and other fields, providing lightweight, safe and cost-effective solutions for low altitude economy. After the first flight is completed, we will continue to carry out verification flights, and will enter the airworthiness certification test flight stage in the second half of this year. We expect to obtain the model qualification certificate within the year and strive to complete the production license approval by 2027. ”Zhang Jingyuan said. (Looking into the New Era)