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

US EUROPE AFRICA ASIA 中文
China / Government

Plane development problems 'still to be solved'

By Zhao Lei (China Daily) Updated: 2015-05-13 07:43

China must resolve a host of technological and technical difficulties before it can develop a reliable short takeoff and vertical landing aircraft, aviation industry insiders say.

"STOVL aircraft use some extremely sophisticated technology and techniques," said Song Xinzhi, an aviation equipment expert in Beijing who served in the PLA air force for more than three decades.

"Even the US, which boasts the highest level of aviation technology, has spent about 20 years on its Lockheed Martin F-35B project."

Despite the fact that the F-35B will soon start active service in the US military, some problems linger, casting a shadow over its deployment, Song said.

"For instance, the heat caused by its engine exhaust can easily melt the steel deck on the carrier ship, and the United States is still figuring out a solution, otherwise the vertical takeoff capability will be disabled."

The plane's complex structure and extra instruments result in the fuel tank and weapons bay being smaller than in conventional fixed-wing aircraft, meaning that engineers have to use delicate designs to offset the disadvantage, Song added.

Wang Mingliang, a professor at the PLA Air Force Command College, said the thrust vectoring system, balancing instruments and nozzle materials are major technological obstacles that the Aviation Industry Corp of China must overcome to build a STOVL aircraft.

Wang Ya'nan, deputy editor-in-chief of Aerospace Knowledge magazine, said that although China is facing these difficulties, it should persist in the development of the STOVL fighter jet.

"The F-35B project has cost the US a lot of money and resources, but the Americans have never given it up. This is because they clearly know the STOVL aircraft's importance in naval and amphibious operations.

"The British navy has also said that it would have been a disaster for its fleet if there had been no Sea Harrier jump jets in the 1982 Falklands War (also known as the Malvinas War)."

The US Marine Corps has had a standing force of STOVL aircraft for more than 30 years and is expecting to commission its first Lockheed Martin F-35Bs, the most advanced STOVL aircraft in the world.

Wang Ya'nan said, "At the initial stage, we needn't set a standard as high as that of the F-35B for our STOVL fighter jet.

"Instead, our designers should set a technically feasible goal, so that they can make a basic version as soon as possible. ... After that, they can gradually develop more advanced, upgraded variants.

"Unlike the F-35B, I don't think our STOVL aircraft will need stealth capability, so the aerodynamic design will be easier."

Plane development problems 'still to be solved'

Highlights
Hot Topics
...
主站蜘蛛池模板: 日本黄色毛片 | 亚洲第一页在线播放 | 三级全黄a| 欧美一级毛片免费播放aa | 欧美日本亚洲国产一区二区 | 成人视视 | 欧美亚洲一区二区三区 | 亚洲欧美日韩在线不卡中文 | 精品高清国产a毛片 | 成人自拍小视频 | 欧美一级特黄刺激爽大片 | 亚洲精品自产拍在线观看 | 福利社在线 | 中文字幕日韩一区二区不卡 | www.久久久| a中文字幕1区 | 91久久精品国产免费一区 | 波多野结衣在线观看高清免费资源 | 国内精品一区二区在线观看 | 欧美成人午夜 | 在线播放性xxx欧美 在线播放亚洲视频 | 亚洲一级毛片视频 | 免费一级毛片在线播放欧美 | 精品成人毛片一区二区视 | 尹人成人 | 国产a久久精品一区二区三区 | 亚洲欧美高清视频 | 亚洲精品人成网在线播放影院 | 亚洲国产欧美日韩 | 国产精品一国产精品免费 | 国产原创系列在线 | 日韩一级欧美一级在线观看 | 黄色三级视频在线播放 | 一级欧美日韩 | 日本特黄aaaaaaa大片 | 国产午夜精品一区二区三区不卡 | 久久久精品久久久久久久久久久 | 成年人国产| 亚欧美视频| 国产一级成人毛片 | 亚洲欧美视频在线播放 |