涡流检测发现F-35引擎叶片裂纹

热度 28已有 953 次阅读2013-2-23 11:51 | 美国国防部, 战斗机, 检测, 联合

      美国国防部22日发表声明说,由于一架F-35联合攻击战斗机引擎发现裂痕,美军已停飞所有这种战斗机。眼下相关部门正在进行更全面的检查,以确定出现这一问题的原因。

      最早发现的裂纹是加利福尼亚州爱德华兹空军基地,维护人员对一架F-35A型战机用内窥镜进行目视检查时,在战机引擎低压涡轮的一个叶片上发现疑似裂痕。随后进行的涡流检测证实了这一迹痕确实是裂纹。眼下,发现裂痕的叶片已经送至航空发动机制造商普惠公司位于康涅狄格州米德尔敦的引擎工厂。技术人员正对其进行更加全面的检查,以找出这一问题的根源。最终结论将在对裂痕开展全面技术分析后作出,需要大约一星期时间。

    为安全起见,美军停飞了空军、海军和海军陆战队三个批次的全部F-35联合攻击战斗机。

    F-35联合攻击战斗机是美英等国联合研制的第五代多用途作战飞机。它采用隐形技术和其他高技术装备,将取代美国空军、海军及海军陆战队多种现有型号飞机。但这种战斗机在研发过程中问题不断,预算不断超支,交付日期也不停推后。根据现有预测,如果五角大楼按原计划在未来25年内装备2443架F-35,这一项目总花费将接近4000亿美元,成为美国历史上最昂贵的武器项目。

【原文】
WASHINGTON (AP) — The Pentagon on Friday grounded its fleet of F-35 fighter jets after discovering a cracked engine blade in one plane.

The problem was discovered during what the Pentagon called a routine inspection at Edwards Air Force Base, Calif., of an F-35A, the Air Force version of the sleek new plane. The Navy and the Marine Corps are buying other versions of the F-35, which is intended to replace older fighters like the Air Force F-16 and the Navy F/A-18.

All versions — a total of 51 planes — were grounded Friday pending a more in-depth evaluation of the problem discovered at Edwards. None of the planes have been fielded for combat operations; all are undergoing testing.

In a brief written statement, the Pentagon said it is too early to know the full impact of the newly discovered problem.

A watchdog group, the Project on Government Oversight, said the grounding is not likely to mean a significant delay in the effort to field the stealthy aircraft.

"The F-35 is a huge problem because of its growing, already unaffordable, cost and its gigantically disappointing performance," the group's Winslow Wheeler said. "That performance would be unacceptable even if the aircraft met its far-too-modest requirements, but it is not."

The F-35 is the Pentagon's most expensive weapons program at a total estimated cost of nearly $400 billion. The Pentagon envisions buying more than 2,400 F-35s, but some members of Congress are balking at the price tag.

Friday's suspension of flight operations will remain in effect until an investigation of the problem's root cause is determined.

The Pentagon said the engine in which the problem was discovered is being shipped to a Pratt & Whitney facility in Connecticut for more thorough evaluation.

 

 


路过

雷人
25

握手
1

鲜花

鸡蛋

刚表态过的朋友 (26 人)

发表评论 评论 (3 个评论)

回复 阿黃 2013-2-24 20:10
美國軍方的NDT人員做法正確,內窺鏡看到的只是「肉眼所見」,並不能
肯定是裂紋,用渦流覆檢才能分辨真假裂紋。我在檢測牙齒輪箱時就是應用這兩種方法。
各位同仁千萬不要完全相信我們的眼睛!
回复 xiaowang 2013-2-26 11:41
不错啊
回复 000040 2013-3-21 10:13
各行各业都离不开我们这些探伤工啊

facelist doodle 涂鸦板

您需要登录后才可以评论 登录 | 注册