中国研制小型多旋翼无人机，最高飞行高度5000米

China has developed an X-M20 "Crane," a small-size multi-rotor unmanned aerial vehicle (UAV), which can climb up to 5,000 meters, said the China Helicopter research and Development Institute (CHRDI) Tuesday.

中国直升机研究与发展研究所周二表示，中国已经研发出一种X - M20“Crane”，这是一种小型多旋翼无人飞行器，可上升至5000米。

The electric-powered small UAV features distinctive pitch control technique, which makes it unique in the UAV market, said China’s leading helicopter research organ of Avicopter under the Aviation industry Corporation of China (AVIC).

中国航空工业集团公司下属的中国领先直升机研究机构Avicopter表示，电动小型无人机具有独特的俯仰控制技术，这使其在无人机市场上独树一帜。

X-M20, with the weight only 20 kilograms, is designed to have a service ceiling up to 5,000 meters and wind resistance capacity up to level seven.

X-M20的重量只有20公斤，其最高飞行高度可达5，000米，抗风能力可达7级。

As to the outstanding endurance capacity, the small UAV can fly about one hour with its maximum payload of five kilometers.

至于卓越的续航能力，小型无人机可以飞行约一小时，最大有效载荷为五公里。

Typically, the multi-rotor aerial vehicle in the market is controlled by changing the rotating speed, while the X-M20 adopts pitch rotor control technique.

市场上的多旋翼飞行器一般是通过改变转速来控制的，而X-M20采用的是俯仰旋翼控制技术。

X-M20 is controlled by changing the angle of rotors, thus the small UAV is endowed with higher efficiency, flexibility and wind-resistance capacities, CHRDI said.

CHRDI说，X-M20是通过改变转子的角度来控制的，因此小型无人机具有更高的效率、灵活性和抗风能力。

It is configured with high-performance blades, which reduces its power consumption and noise level and makes it more capable of long-endurance flight.

配备高性能叶片，降低功耗和噪声水平，提高了飞机的续航能力。

The small multi-rotor UAV could be used in multiple missions such as border patrol, anti-terrorism, line patrol, geographical surveys and traffic monitoring.

小型多旋翼无人机可用于多项任务，如边境巡逻、反恐、线路巡逻、地理调查和交通监测。

China has become a major player in the global helicopter market. Avicopter has mastered more than 50 models in 12 series of helicopters, making it among the world’s seven leading helicopter manufacturers.

中国已成为全球直升机市场的主要参与者。Avicopter公司已经掌握了12个系列直升机中的50多种机型，使其跻身世界七大直升机制造商之列。