新闻
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China

困扰中国多年仅次核武的第二大敏感技术,有盼头了!

2017-09-27 09:14:26   瞭望

战后,普·惠决定制造英国罗·罗公司的尼恩发动机。

然而,当时喷气发动机普遍存在四个重大缺陷:高油耗、低推力、加速慢、噪音大,严重制约了实际应用。

为了克服这些缺陷,该公司于1946年作出重大决策:投入巨资建设新的研发机构和相应测试设施,以追赶竞争对手。

英国的国宝级企业罗尔斯·罗伊斯公司

5年以后,普·惠公司研制出双转子发动机J57,把推力提高了一倍多,油耗率也大大降低。

J57的成功,不仅为美国的B52、F-100、F-101、F-102、KC-135等多种战机和轰炸机及加油机提供了动力,而且,J57的商用型JT3还成为波音707的动力,直接促成了远程军用/商用运输机的大发展。

换言之,J57奠定了美国在喷气发动机领域领先地位的第一块基石。

3

“美国心”如何止住了痛?

在很长一段时间里,“美国心”也“很痛”。

比如,通用电气研制的J79,是世界公认的最重要、最具革命性的一款喷气发动机。

然而,在研发起步阶段,J79这颗“心脏”也曾面临难产的窘境。

发动机研发进度远远赶不上飞机出新品的速度。

XF—104闪亮登场时,它的标配“心脏”J79还没出世,不得不拿J65-B-3发动机来代替。

可是,J65-B-3根本hold不住原设计的2倍音速,只勉强达到马赫数1。这事使那时候的美国航空成了笑柄。

后来,随着一系到技术突破,J79获得了成功,给F-104、以色列“幼狮”、F-16出口型等战机提供了强劲动力,进一步奠定了美国喷气发动机工业的全球领先地位。

不仅如此,美国普·惠F100-PW-100发动机,也曾令F-15战机“很心痛”。

F100-PW-100发动机

1972年,该型发动机首次装备F-15。初期,出现了损耗过快、压气机失速、以及加力点火困难等一大堆难缠的问题,导致大批飞机“趴窝”。

直到14年后,1986年,上述问题才得以妥善解决。

上一页3/7下一页
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China

相关阅读

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/13000808/20170927/31519684_3.html
Server: cms-8-251
Date: 2024/12/29 02:32:39

Powered by China
China