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 > PPT文档下载
    分享到微信 分享到微博 分享到QQ空间

    A Case Study of the Boeing B-47 Stratojet.ppt

    • 资源ID:377806       资源大小:1.28MB        全文页数:16页
    • 资源格式: PPT        下载积分:2000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2000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。

    A Case Study of the Boeing B-47 Stratojet.ppt

    1、,A Case Study of the Boeing B-47 Stratojet,Joel Grasmeyer Troy JonesDana Horn Duane Knill,Outline,The political and economic climate The evolution of the B-47 B-47 innovations in aerodynamics, stability and control, and structures The legacy of the B-47,At This Time in History .,Its 1943 and World W

    2、ar Two is raging Aircraft production in the U.S. is staggering Aircraft development is rapid Piston engine technology reaching limits Turbojet engines show promise Britain and Germany have advantage Reports of German fighter jets prompt U.S. to consider jet bombers,Origins of the B-47,Air Corps Desi

    3、gn Competition, 1944 Design high speed jet bomber, 500 mph + 8,000 pound payload Range of 2,500 to 3,500 miles Service Ceiling of 40,000 feet Designs submitted in 1944 North American B-45 Convair B-46 Boeing B-47 Martin B-48,Evolution of the B-47,B-47 began as straight wing design Limited top speed

    4、to under 500 mph Operation Paperclip Adolph Busemann Swept wing theory in 1935 Engines and more engines Fuselage and wing mounted Four or six?,Evolution of the B-47,Evolution of the B-47,Image from: The Politics of the U.S. Strategic Bomber ProgramMichael E. Brown, 1992.,The Production B-47,Images F

    5、rom: American Warplanes, Bill Gunston, 1986.,Podded Engines on the Wing,Image From: American Warplanes, Bill Gunston, 1986.,Podded Engine Advantages,Interference drag was reduced in the wind tunnel Strut weight was minimal Increased span loading Reduced the wing root bending moment Reduced wing weig

    6、ht Forward mass increases flutter resistance Increased accessibility for maintenance Increased passenger safety in case of an engine fire,Pitch-up Problems (Dana),Longitudinal Stability (Dana),The Yaw Damper (Dana),The Flexible Wing,Long range transonic cruise requirements: Large span for minimum in

    7、duced drag (116 ft.) Thin airfoils for minimum wave drag (12%) This led to a very flexible wing The load distribution was shifted inboard at high gs This allowed an 8 ft. span extension at each tip without changing the original wing structure or engine locations Acted as a shock absorber to reduce g

    8、ust loads,The Legacy of the B-47,The B-47 led directly to the development of the 707 Todays commercial transports follow the design paradigm of the B-47/707,Boeing 720 1960,Boeing 777 1996,References,Brown, Michael E., Flying Blind - The Politics of the U.S. Strategic Bomber Program. Cornell Univers

    9、ity Press, London, 1992. Cook, William H., The Road to the 707, TYC Publishing, Bellevue, 1991. Donald, David, Ed. American Warplanes of World War II. Aerospace Publishing Limited, London 1995. Gunston, Bill, American Warplanes. Salamander Books, New York, 1986. Irving, Clive, Wide-Body: The Triumph of the 747, William Morrow, New York, 1993.,


    注意事项

    本文(A Case Study of the Boeing B-47 Stratojet.ppt)为本站会员(周芸)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