www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Top Stories

Solar-powered craft can drone on for months, reaches new high

By Zhao Lei | China Daily | Updated: 2017-06-02 07:18

China's largest and most advanced solar-powered unmanned aircraft has set a domestic record for flight ceiling by reaching an altitude of over 20,000 meters, according to its designer.

The Caihong, or Rainbow, solar-powered drone, developed by the China Academy of Aerospace Aerodynamics, set the record during a test flight last week at an unidentified airport in Northwest China. It flew at an altitude of 20,000 meters long enough for the flight to be classified as a success, Shi Wen, head of unmanned aircraft development at the academy, said in an exclusive interview on Thursday.

He said the drone took off in the morning and flew back to the airport late at night. It will take several years for designers and engineers to improve and test the aircraft before it is delivered to users.

The aircraft is able to fly above a large area and features flexibility and good economy. Future improvements will enable it to remain aloft several months or even several years. Potential buyers mainly will be government departments and companies involved in communications, internet, Earth observation, emergency response and marine survey and inspection, according to Shi.

He declined to reveal the size of the drone, but earlier reports said a similar type aircraft developed by his team was 14 m long with a 45 m wingspan.

The designer explained that normally, a fuel-powered military drone can fly to a maximum altitude of up to 8,000 m while a handful of top surveillance drones like the Northrop Grumman RQ-4 Global Hawk in the United States are capable of reaching altitudes of 18,000 m.

In the category of solar-powered drones, Chinese institutes have developed some experimental models, but they are smaller and technologically unsophisticated compared with the Caihong, and their highest operational altitudes are at thousands of meters, Shi said.

His comments were echoed by Wang Yangzhu, president of Beihang University's Unmanned System Institute and a senior drone expert. Wang said Beihang University in Beijing, Nanjing University of Aeronautics and Astronautics in Jiangsu province and Northwestern Polytechnical University in Shaanxi province had made experimental, solar-powered drones to verify technologies and their types "could hardly fly any higher than 10,000 m".

"Therefore, the Caihong has made a remarkable achievement," Wang noted.

Shi said the higher a solar-powered drone can fly, the longer it is able to remain in the sky because there are no clouds 20,000 m above the ground and the airflow there is stable. Thus, the drone can fully use its solar cells to generate power. As long as the solar power system works well, the aircraft can stay in the air as long as the controllers wish.

Previously, the US and United Kingdom developed solar-powered drones capable of flying as high as 20,000 m. The altitude record for a solar-powered drone, 29,524 m, was made by the US Helios Prototype, developed by AeroVironment Inc in California, in August 2001.

Drones made by the China Academy of Aerospace Aerodynamics have been used in more than 10 foreign countries, according to the academy.

Contact the writer at zhaolei@chinadaily.com.cn

 

Solar-powered craft can drone on for months, reaches new high

The Caihong drone flew over 20,000 meters high.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 亚洲一级毛片视频 | 一区二区三区高清不卡 | 一区二区精品视频 | 国产一级久久免费特黄 | 国产欧美在线观看视频 | 男女扒开双腿猛进入免费网站 | aa级毛片毛片免费观看久 | 国产成人综合网亚洲欧美在线 | 97高清国语自产拍中国大陆 | 中文 日本 免费 高清 | 99国产精品高清一区二区二区 | 国产精品亚洲欧美一级久久精品 | 亚洲综合视频在线观看 | 亚洲人成网站在线在线 | 日本免费www| 国产成人看片免费视频观看 | 国产不卡精品一区二区三区 | 日韩精品视频免费在线观看 | 草草影 | 国产亚洲精品九九久在线观看 | 99精品免费在线 | 香蕉成人在线 | 97婷婷狠狠成人免费视频 | 日本韩国三级在线观看 | 国产精选一区二区 | 农村寡妇女人一级毛片 | 成人a毛片手机免费播放 | 丁香久久| 欧美丝袜自拍 | 久久久成人网 | 日本尹人综合香蕉在线观看 | 日本免费一区视频 | 国产成人精品午夜免费 | 久久九九免费视频 | 最新中文字幕一区二区乱码 | 狼人总合狼人综合 | a级毛片免费播放 | 欧美巨大另类极品videohd | 欧美三级做爰全过程 | 99视频在线精品免费观看18 | 精品videosex性欧美 |