欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    REG NASA-LLIS-0376--1995 Lessons Learned - Galileo Spacecraft Transporter Excessive Humidity (2007 Revision).pdf

    • 资源ID:1018023       资源大小:14.52KB        全文页数:3页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    REG NASA-LLIS-0376--1995 Lessons Learned - Galileo Spacecraft Transporter Excessive Humidity (2007 Revision).pdf

    1、Lessons Learned Entry: 0376Lesson Info:a71 Lesson Number: 0376a71 Lesson Date: 1995-01-30a71 Submitting Organization: JPLa71 Submitted by: R.F. CollinsSubject: Galileo Spacecraft Transporter Excessive Humidity (2007 Revision) Abstract: The Galileo spacecraft sustained water damage when its environme

    2、ntally controlled shipping container was left open at the launch facility, allowing humid air to enter throughout a holiday weekend. Controlled environment containers should have continuously visible indicating recorders including an alarm feature. Novel operational modes require hazard analysis.Des

    3、cription of Driving Event: The Galileo Spacecraft was shipped to the launch site in a custom made transporter with the RHUs (Radioisotope Heating Units) installed. Removal of the heat from the RHUs required external cooling to an ambient air temperature between 48 degrees and 59 degrees F., which wa

    4、s provided by the transporter air conditioning system. The spacecraft also had an internal purge system which protected sensitive elements from uncontrolled humidity and airborne contamination during shipment.Upon arrival at The Cape, the transporter was placed indoors under guard in environmentally

    5、 controlled conditions. Once inside the transporter air conditioners were transferred to facility power and the purge gas supply was transferred to facility nitrogen. The pressurized enclosure seal of the transporter door was relieved. Since the S/C was not to begin processing until after the year-e

    6、nd holiday interval at KSC, it remained in the controlled environment under guard with periodic monitoring until after the holidays when the mechanical crew arrived and commenced KSC operations. When the transporter was opened, puddles of water were noted on the floor of the transporter and external

    7、 spacecraft surfaces exhibited corrosion, characteristic evidence of excessive humidity. The conclusion after intensive inspection and extensive additional analysis by all subsystem cognizant personnel was that only external and cleanable damage occurred.Provided by IHSNot for ResaleNo reproduction

    8、or networking permitted without license from IHS-,-,-Additional Keyword(s): Environmental ControlLesson(s) Learned: If the humidity inside the transporter had been monitored, the super saturation condition produced by 70 degree room air entering the 50 degree transporter environment would have been

    9、detected early and negligible damage to the spacecraft would have occurred.Recommendation(s): 1. Whenever environmental conditions are specified for a container, the specified parameters should be provided with continuously visible indicating recorders including an alarm feature if limits are exceed

    10、ed.2. When a device is operated in a mode which was not contemplated, analysis should be conducted to determine whether this new operational mode could be hazardous to the device or personnel.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): N/A

    11、Additional Key Phrase(s): a71 Environmenta71 Packaging Handling Storagea71 TransportationAdditional Info: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Approval Info: a71 Approval Date: 1986-05-30a71 Approval Name: ghendersona71 Approval Organization: HQProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


    注意事项

    本文(REG NASA-LLIS-0376--1995 Lessons Learned - Galileo Spacecraft Transporter Excessive Humidity (2007 Revision).pdf)为本站会员(testyield361)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开