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中国如何将俄制发动机延寿2/3 取决于这一关键部件

2019-08-25 15:14 来源:腾讯健康

  中国如何将俄制发动机延寿2/3 取决于这一关键部件

  同时,大学6个校门和校园中心区域安装了9台人脸识别闸机系统,游客不仅需要提前预约,还得凭身份证“刷脸”入校。同时,烟台和荣成方向也是石济高铁开通后,动车组首次延伸直达。

这也是大马士革成为穆斯林世界里第四大圣地的重要原因。        中国空军航空兵某团团长陈亮:    无论训练环境多么复杂,训练区域多么陌生,飞行员们都勇往直前,一直保持临战的思想、迎战的姿态、实战的标准,锤炼了“一不怕苦、二不怕死”的血性胆魄,提升了备战打仗、能打胜仗的本领。

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  中国如何将俄制发动机延寿2/3 取决于这一关键部件

 
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中国如何将俄制发动机延寿2/3 取决于这一关键部件

1
2019-08-25 10:01Xinhua Editor: Gu Liping ECNS App Download
A view of the cockpit of C919, China's first domestically produced large passenger plane. The plane's maiden flight will take off from Shanghai Pudong International Airport. (Photo/Xinhua) 人生不如意事十之八九顶梁柱,请想想你的妻女,重新振作起来,望着流淌的金水河水,45岁的袁伟(化名)心里的憋屈再次涌上来,选了一块草坪躺下后,他便拿出包里的刀,用力在左手腕处割了三刀。

A view of the cockpit of C919, China's first domestically produced large passenger plane. The plane's maiden flight will take off from Shanghai Pudong International Airport. (Photo/Xinhua)

The aircraft is developed by the Commercial Aircraft Corporation of China (COMAC). Its main rivals will include Airbus 320 and Boeing 737. (Photo/Xinhua)

The aircraft is developed by the Commercial Aircraft Corporation of China (COMAC). Its main rivals will include Airbus 320 and Boeing 737. (Photo/Xinhua)

While the much-awaited first Chinese-built passenger jet C919 is ready to make its maiden flight Friday, it may take much longer for the newcomer to take off in the aviation market.

Shaking the dominance of aviation giants Boeing and Airbus in the near future is unrealistic, observers say, but the Chinese jetliner could be a strong option for global carriers in decades to come.

Scheduled to depart from Shanghai Pudong International Airport on May 5, the C919, with 158 seats and a standard range of 4,075 kilometers, is expected to compete with the updated Airbus 320 and Boeing's new generation 737.

A total of 23 foreign and domestic customers, including China's national carrier Air China and leasing company GE Capital Aviation Service, have placed orders for 570 aircraft, according to the Commercial Aircraft Corporation of China (COMAC).

But this is only the very first step. Even in China's domestic market, COMAC has a long way to go to turn technical success into business success.

Currently, Chinese airlines seem to be more keen to spend money on wide-body aircraft to enhance their global routes with rising enthusiasm for overseas travel. Those jets are still the exclusive province of Boeing and Airbus.

China Eastern Airlines signed contracts in 2016 to buy 20 A350-900 aircraft from Airbus and 15 B787-9 aircraft from Boeing to be delivered between 2018 and 2022.

China Southern Airlines announced in April that it will buy 20 A350-900 with a total catalog price of nearly 6 billion U.S. dollars.

Boeing and Airbus are very mature aircraft manufacturers, and COMAC should seek further cooperation with them to learn from their experiences, according to aviation analysts.

But looking ahead, single-aisle planes like C919 will be the market mainstream and COMAC should do well in the Chinese market, one of the most competitive.

Boeing predicted last year that China will become the world's top aviation market within 20 years, projecting a demand for 6,810 new aircraft in the next two decades with a total value of 1 trillion U.S. dollars.

China will need 5,110 new single-aisle airplanes through 2035, accounting for 75 percent of the total new deliveries, according to Boeing.

The C919 will be a strong competitor in this field being economical and comfortable, according to a research note from Guosen Securities.

If the maiden flight is successful, COMAC will seek airworthiness certificates from the Civil Aviation Administration of China and foreign aviation safety regulators before making its first deliveries.

Also, to pave way for C919 to enter foreign markets, the airworthiness certification of the jet will be a part of bilateral air safety agreement talks between China and the EU.

China has invested heavily in commercial passenger jet manufacturing. In 2007, plans to develop a domestic large passenger jet were approved by the State Council. In November 2015, the first C919 jet rolled off the assembly line.

The ARJ21, the country's first regional aircraft also produced by COMAC, began commercial operations in June 2016 following its maiden flight in 2008.

  

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