Rotor is an important component of a helicopter. It moves horizontally and rotates, so complicated aerodynamic problems are produced. The rotor blades generally use the thin airfoil with a high aspect ratio. Limited structural layout space brings difficulties for dynamic design.Since the establishment of Beijing ZhongHangZhi Technology Co., Ltd., (hereinafter referred to as ZHZ), a great deal of manpower and material resources has been invested in rotor design and so far, a helicopter rotor system R&D talent team covering aerodynamics, payload, strength, dynamics, and structural design and technological processes has been built. It is capable of design of the fourth-generation rotor and has researched and development multiple rotor systems.The rotor system can be tailored to you.

We have complete experience from parts and components to systems and from conceptual design to product delivery. We adhere to a high-performance and low-cost development idea to make the products more competitive in the market.

High reliability: test capabilities from parts and components to systems; reliable and endurable products

Lower vibration and noise levels and higher drive efficiency are possessed by means of gear quality control and CAE simulation analysis.

Environmental adaptability: The product is adaptable to different operation environments of low temperature, high temperature, high humidity, mildew, and fog salt.

Because of application of several light metals such as titanium alloy, aluminium alloy, and magnesium aluminium, the weight is lighter with other indexes the same.

With consideration of reliability, safety, and low-cost design and factors such as environmental sounds, detailed design was performed based on the existing military and civil flight control and avionics systems, different levels of UAV flight control and avionics systems have been customized, including the following characteristics.

Modular platform: Modular system software and hardware is used. The flight control and avionics system supports function and interface expansibility and aircraft platform compatibility.

High-reliability system architecture: Multiple Redundant Systems and Components; "LOCKSTEP" MCU architecture

System development efficiency can be increased and productization time can be shortened based on graphic guidance law and control law development modes in model design.

The products are electromagnetically compatible, comply with IP67 environmental protection, and meet the requirements for specific service environments.

The whole system supports an MTBF of over 1000 hours.

A precise flight dynamics model plays an important role in unmanned helicopter flight control, flight quality analysis, and simulation verification. Since the establishment, ZHZ has always been dedicated in iterating and optimizing the modeling method so as to improve the unmanned helicopter modeling accuracy. Currently, it has already possessed two modeling methods of "First-Principle" and "System Identification".

Among the two methods, models based on "First-Principle" can help engineers understanding the helicopter theories and flight better while models based on "System Identification" are comprehensive and accurate, meeting the high-bandwidth control requirements.

By means of thorough understanding and practice of the two modeling theories, the company has been leading the flight dynamics modeling technology in the helicopter industry.

The company is able to supply services of engineering consultation, project seminar, and project management to satisfy specific requirements of customers in different phases.In order to deal with those engineering project conditions flexibly, we provide various project consultation services in order to supply a complete rotor system solution for customers, including screening of rotor configurations, optimized selection of airfoil configurations, evaluation of rotor performance, payload, strength, and dynamics, compilation of structure design and technological process documents, manufacture of composite components (hubs and blades), and ground tests and flight tests (performance tests and blade load test).

Expert Teams:

In Integration (General): Tian Gangyin, Liu Fangguo, Zhang Yajun, Yang Shitao, Zhang Yuanrui, Sun Tao, and Li Weile.

In Aerodynamics: Li Quan, Tong Chao, Li Cheng, Xu Qian, and Wei Lin.

In Payload, Strength, and Dynamics:

Fan Jianfeng, Gao Lei, Liu Shuyan, Guan Chuangchuang, and Zhang Yuhang.

In Structure: Han Shuhong, Zhang Ruifang, Bai Xuegang, and Liu Chenming.

In Technological Process: Li Yi

In Test: Liu Shuyan, Li Xiao, Zuo Xiu, Peng Junshu, Li Chuang, and Yang Pengfei.

In Structure: Han Shuhong, Zhang Ruifang, Bai Xuegang, Liu Chenming, and Meng Cheng.

We provide professional airworthiness and safety consultation services for different types of UAV R&D, verification and certification, and airworthiness certification activity. Following professional consultations are available:

Capable of establishing a design guarantee system complying with the inherent characteristics of an enterprise in UAV R&D.

Capable of providing professional compliance techniques against airworthiness terms

Capable of supporting airworthiness compliance design and verification.

Capable of providing safety design and evaluation technologies in levels of UAS, subsystems, and equipment.

Capable of providing consultation services regarding UAV verification and certification and airworthiness certification.