国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

Confidence sky-high over jumbo cargo plane

mail

Aircraft on course for service after successful test flight, designer says

The country's first jumbo airfreighter is set for take-off into official service, its chief designer said weeks after its successful maiden test flight.

When fitted with Chinese-designed and manufactured engines, the Yun-20, or Transport-20, will have a greater take-off weight, longer fuselage and carry more cargo, said Tang Changhong, who has led the design team of the jumbo aircraft since 2007.

It is currently powered by four Russian-made engines, but these will ultimately be replaced by engines designed and made in China.

It will be in service probably within five years, depending on tests, Tang told China Daily.

The 15-meter-high aircraft underwent a successful test flight on Jan 26.

The Ministry of Defense confirmed shortly after the successful test flight that the Yun-20, mainly developed by the Xi'an Aircraft Industry (Group) Co Ltd, has a load-carrying capacity of 66 metric tons.

It is 47 meters long, has a wingspan of 45 meters and a maximum take-off weight of 200 tons, Xinhua News Agency reported on March 3.

"We are still conducting test flights. They are going well, but more tests have to be carried out before it is put into use," Tang said.

Tang made the remarks on the sidelines of the annual session of the National Committee of the Chinese People's Political Consultative Conference, the country's top political advisory body. The meeting concluded last Tuesday.

Even when it is in service, designers will be carrying out upgrades to improve its performance, he said.

Tang revealed that domestically designed and manufactured engines will be tested during test flights and once they have passed various tests they will power the jumbo airfreighter.

The Chinese engines perform better in terms of fuel efficiency and thrust-weight ratio, he said.

Tang also said that, as is international practice, an aircraft could use several types of engines.

China's largest transporter had been the Yun-8, which has a maximum take-off weight of 61 tons. The Yun-8 debuted in 1975.

The Yun-20 can operate in adverse weather and a range of topographical conditions, Tang said.

"It can serve peace-keeping missions and bring in large quantities of aid for humanitarian missions."

Tang, a graduate of the Beijing University of Aeronautics and Astronautics, works at the No 1 Aircraft Design Institute under the Aviation Industry Corp of China.

In addition to the institute, at least 1,000 companies or research institutes have been involved in design and production of the jumbo, according to Tang.

The transport plane puts China in an exclusive club of countries and signals an ability to produce homegrown technology to boost its defense capacity, Xinhua reported in January.

"The successful test flight of the Yun-20 marks a milestone in China's aviation industry and we're moving a step closer toward building a strategic air power for the country," the news agency quoted Tang as saying earlier this month.

zhaohuanxin@chinadaily.com.cn

(China Daily 03/19/2013 page1)

| About us | Contact |

Copyright ? 2012 China Daily. All rights reserved

平和县| 金乡县| 曲麻莱县| 元朗区| 惠水县| 永修县| 红桥区| 安岳县| 象山县| 永和县| 巴马| 六盘水市| 阳新县| 宜章县| 抚顺市| 日喀则市| 三原县| 治县。| 新巴尔虎右旗| 安阳市| 东城区| 利川市| 延庆县| 崇义县| 宕昌县| 尚志市| 大渡口区| 烟台市| 富平县| 集安市| 龙山县| 新闻| 闽清县| 安岳县| 定西市| 桦甸市| 郓城县| 洛浦县| 闻喜县| 连州市| 杂多县|