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首页> 外文学位 >Design and performance of a ducted coaxial rotor in hover and forward flight.
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Design and performance of a ducted coaxial rotor in hover and forward flight.

机译：管式同轴转子在悬停和向前飞行中的设计和性能。

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摘要

A ducted contra-rotating coaxial rotor system was designed and tested to assess its potential use as a micro aerial vehicle (MAV). Performance measurements (thrust and power) of the system in hover and forward flight were obtained. The influence of several design parameters (rotor spacing, duct inlet shape, position of rotors within the duct, and tip clearance) on performance was determined. Performance measurements of the unducted coaxial rotor, as well as the unducted/ducted single rotor configurations, were also obtained to give a performance baseline for the ducted coaxial rotor. The aerodynamic characteristics of the isolated duct were assessed from loads measurement and surface flow visualization. While the net system performance of operating the coaxial rotor within the confines of a duct was not always improved, the ducted coaxial rotor concept is still attractive for a MAV based on total attainable thrust for a given rotor size and other operational benefits.
机译：设计并测试了管道反向旋转同轴转子系统，以评估其作为微型飞行器（MAV）的潜在用途。获得了系统在悬停和向前飞行中的性能测量值（推力和功率）。确定了几个设计参数（转子间距，管道入口形状，转子在管道内的位置以及叶尖间隙）对性能的影响。还获得了非导管同轴转子的性能测量值，以及非导管/导管单转子配置的性能测量结果，以给出导管同轴转子的性能基线。通过载荷测量和表面流可视化评估了隔离管道的空气动力学特性。尽管在管道范围内操作同轴转子的净系统性能并不能始终得到改善，但对于给定的转子尺寸和其他操作优势，基于总可达到的推力，对于同轴电缆而言，管道同轴转子概念仍然很有吸引力。

著录项

  • 作者

    Lee, Timothy Edward.;

  • 作者单位

    University of Maryland, College Park.;

  • 授予单位 University of Maryland, College Park.;
  • 学科 Engineering Aerospace.
  • 学位 M.S.
  • 年度 2010
  • 页码 181 p.
  • 总页数 181
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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