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Propulsion and aerodynamic performance evaluation of jet-wing distributed propulsion

机译：喷气翼分布式推进的推进和空气动力性能评估

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摘要

Distributed propulsion is the idea of redistributing the thrust across the drag producing elements of a vehicle. Our configuration has a modest number of engines with part of the exhaust flow vented from thick trailing edges of the wings to cancel the local profile drag and the rest of the exhaust flow providing thrust to cancel the induced drag and drag of the fuselage and tails. CFD studies were performed on two-dimensional wing sections in transonic, viscous flow to (1) investigate the effect of jet-wing on propulsion efficiency and the flow field (2) determine design changes for achieving efficient distributed propulsion, and (3) investigate the effect of jet-flaps with small jet deflection angles on aerodynamic parameters. The jet-wing distributed propulsion can give propulsive efficiencies on the order of turbofan engine aircraft and if the trailing edge of a conventional Outboard airfoil is expanded, efficiency can be increased by 7.5%. An increase in propulsion efficiency was achieved without expanding the trailing edge for a thicker Inboard airfoil. The results of the Outboard airfoil jet-flap cases support the idea of using deflected exhaust jets from trailing edges as control surfaces.
机译：分布式推进是在车辆的阻力产生元件上重新分配推力的想法。我们的配置采用适量的发动机，部分排气流从机翼的厚后缘排出，以抵消局部轮廓阻力，而其余的排气流则提供推力，以抵消引起的机身和尾翼阻力。对跨音速，粘性流的二维机翼截面进行了CFD研究，以（1）研究喷射机翼对推进效率和流场的影响（2）确定设计变更以实现有效的分布式推进，以及（3）研究小偏转角的喷气襟翼对空气动力学参数的影响。喷气翼分布式推进系统可以提供涡轮喷气发动机飞机数量级的推进效率，并且如果扩展传统舷外机翼的后缘，效率可以提高7.5％。在不扩大后缘的情况下，实现了推进效率的提高，从而使舷内机翼更厚。舷外机翼喷气襟翼案例的结果支持了使用后缘偏转的排气喷气作为控制面的想法。

著录项

  • 来源
    《Aerospace science and technology》 |2010年第1期|1-10|共10页
  • 作者

    Joseph A. Schetz; Serhat Hosder; Vance Dippold III; Jessica Walker;

  • 作者单位

    Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States Aerospace and Ocean Engineering Department.;

    Missouri University of Science and Technology, Rolla, MO 65409, United States Mechanical and Aerospace Engineering Department;

    Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States Aerospace and Ocean Engineering Department. Currently at NASA Glenn Research Center, Cleveland, Ohio;

    Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States Aerospace and Ocean Engineering Department. Currently at Centra Technology, Inc., Arlington, Virginia;

  • 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
  • 中图分类
  • 关键词

    jet-wing; propulsion; distributed propulsion; computational fluid dynamics; aerodynamics;

    机译：喷气翼推进力分布式推进;计算流体动力学;空气动力学;

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