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F-35被五花大绑1000天,美国:一数据远超中国苏-35!

1.95神龙合击 张若昀在本期节目当中则突破形象,首次当爹,据悉,这位父亲一去客栈就为一对儿女阿拉蕾李亦航选了最贵的房间,在曝光的剧照中他还满脸爱意蹲下身给小朋友零食,观众看后不禁期待起张若昀的父爱首秀。


来源:战驴

文/江城子


正如所有的机械一样,飞机的机身也有使用寿命,而与这一标准紧密关联的是机身的结构强度。随着人们对飞机的速度要求越来越高,全金属机身也随之诞生,飞机设计者们在考虑气动外形的过程中不得不着重考虑飞机如何在尽量减轻重量的前提下保证飞机的结构强度。随着时代的进步与技术的革新,对飞机的结构强度的测试方式也在日益改变。静力试验作为结构强度测试的一项重要标准,人们需要借此了解一款飞机在正常状态放置下,当机体受到在静止状况下模拟出来的各种力量载荷时,机体的寿命是多少。


1


战斗机作为一种重要的作战机型,在作战时会携带大量的武器弹药进行机动,机体结构强度的保证既能够有利于完成作战任务,还能保障飞行员的生命安全。所以,静力试验的结果就显得就尤为重要。新浪军事援引美国洛克希德马丁公司官网消息,F-35战机完成了静力和耐坠性能测试表明,F-35战机结构寿命好于预期,将增加这种战机的使用寿命。


article_4__main


尽管洛克希德马丁公司在本月早些时候已经完成了300架F-35战机的交付,但这一测试结果的公布无疑是对采购F-35战机的国家来说是一件利好的消息。在设计之初,F-35战机的机身设计指标是八千小时,虽然与F-15“鹰”的指标持平,但考虑到垂直起降与更高的时速性能,这一寿命要求其实并不过分。而最新的俄制非隐形战机苏-35的机体寿命仅为6000小时!


web_photo__main


根据测试指标,如果机身寿命能够达到八千小时,机身必须要经过其两倍设计寿命的考核。而实际情况令所有人吃惊,F-35战机经受住了整整一千天的不间断静力测试的考验!这也就说明,F-35战机的飞行员,在做高难度的机动的时候不必再战战兢兢,可以尽情去做。而洛克希德马丁公司负责F-35项目的副总裁格雷格·厄尔莫也认为:“机身耐力测试的好成绩,将增加飞行员使用这种飞机的信心。”


F-35_End_of_SDD_Flight_Test_--_Infograph2


战机如何在强度与飞行性能之间找寻平衡点,一直是令各国飞机设计者所头痛的一个问题。只顾飞行性能而不注意机体强度,一味减重就会影响飞行安全,最著名的例子就是“俯冲能解体”的零战11型;而只注意机体强度,机身重量就会直线增加,影响飞行性能,著名的SR-71“黑鸟”就是这一理论的受害者(不过“黑鸟”并不需要多么高的机动性能罢了)。


尽管美国战机一直被人称作是“力大砖飞”,但是如若抹去强势的航空发动机带来的那一层光环,我们就能发现美国战机的机体寿命一直睥睨众生,这不单单得益于美国科学家在材料科学领域的造诣,仰仗的还是战机设计者的辛劳与汗水。

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