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首页> 外文期刊>Journal of Aircraft >Glide Slope Control Authority for Parafoil Canopies with Variable Incidence Angle
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Glide Slope Control Authority for Parafoil Canopies with Variable Incidence Angle

机译：入射角可变的翼型机盖的滑坡控制权

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摘要

The addition of glide slope control to guided airdrop systems has the potential to provide dramatic improvements in landing accuracy. Dynamic rigging incidence control has been demonstrated in flight tests and shown to provide effective glide slope control. The current work presents flight-test results exploring the range of glide slope control that can be achieved with high-performance parafoil canopies of two different aspect ratios. The low- and medium-aspect-ratio canopies have peak glide ratios of 4.4 and 4.9, respectively. By varying the incidence angle in flight, the glide slope can be reduced from these peak values to a glide slope near two for both canopies. Flight tests investigating the relationship between symmetric brake and incidence control demonstrate that symmetric braking produces effective airspeed control with little effect on glide slope, the incidence angle produces significant effects on both glide slope and airspeed, the rapid variation of the incidence angle in flight can lead to significant long period oscillations in both glide slope and airspeed, and the coupled effect of the control mechanisms of incidence angle and symmetric brake can produce dramatic changes in glide slope in any wind condition.
机译：在制导空投系统中增加滑行坡度控制功能有可能显着提高着陆精度。在飞行测试中已经证明了动态索具入射控制，并且可以提供有效的滑坡控制。当前的工作提出了飞行测试结果，探索了可以使用两个不同纵横比的高性能翼型顶篷实现的滑坡控制范围。低和中长径比的顶篷滑坡比分别为4.4和4.9。通过改变飞行中的入射角，可以将两个机盖的滑行坡度从这些峰值减小到接近两个的滑行坡度。通过飞行试验研究了对称制动与入射控制之间的关系，结果表明，对称制动可以有效地控制空速，而对滑坡的影响很小，入射角对滑坡和空速的影响都很大，在飞行中入射角的快速变化会导致会导致滑坡和空速出现明显的长期振荡，并且入射角和对称制动的控制机制的耦合作用会在任何风况下产生滑坡的急剧变化。

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  • 来源
    《Journal of Aircraft》 |2013年第5期|1504-1513|共10页
  • 作者

    Michael Ward; Alek Gavrilovski; Mark Costello;

  • 作者单位

    Graduate Research Assistant, School or Aerospace Engineering. Georgia Institute of Technology, Atlanta, Georgia 30332;

    Graduate Research Assistant, School or Aerospace Engineering. Georgia Institute of Technology, Atlanta, Georgia 30332;

    Professor, Guggenheim School of Aerospace Engineering, Woodruff School of Mechanical Engineering. Georgia Institute of Technology, Atlanta, Georgia 30332;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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