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首页> 美国政府科技报告 >LOW-SPEED CHARACTERISTICS OF A 1/20-SCALE FOUR-ENGINE TRANSPORT MODEL WITH LARGE BODIES MOUNTED ABOVE THE FUSELAGE
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LOW-SPEED CHARACTERISTICS OF A 1/20-SCALE FOUR-ENGINE TRANSPORT MODEL WITH LARGE BODIES MOUNTED ABOVE THE FUSELAGE

机译：安装在大型燃烧室上的大型1/20尺寸四发动机运输模型的低速特性

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摘要

An investigation was made at a Mach number of 0.2 to determine the aero¬dynamic characteristics of a l/20-scale model of a transport airplane having bodies with diameters greater than the fuselage mounted above the fuselage. The bodies represented were the Saturn first stage, a Saturn upper stage, and a capsule large enough to contain either stage. All bodies had nose and tail fairings.nThe addition of bodies to the airplane model resulted in a large loss of directional stability. The airplane-capsule configuration required a vertical-tail area about 5/2 times the original area to provide satisfactory directional characteristics. Although the bodies had a detrimental effect on the longitu¬dinal stability, the modifications to the vertical and horizontal tails that were necessary for directional stability resulted in the combinations having greater longitudinal stability than the basic model. The minimum drag of the airplane-body combinations were 50 to 70 percent greater than that of the orig¬inal airplane configuration.

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  • 作者

    Vernard E. Lockwood;

  • 作者单位
  • 年度 1964
  • 页码 1-67
  • 总页数 67
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业技术;
  • 关键词

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