林玉祥, 王琦, 李卫, 杜琪. 带升力风扇飞翼布局飞机机翼开口处二维气动特性研究[J]. 南昌航空大学学报(自然科学版), 2015, 29(3): 21-25,48. DOI: 10.3969/j.issn.1001-4926.2015.03.004
引用本文: 林玉祥, 王琦, 李卫, 杜琪. 带升力风扇飞翼布局飞机机翼开口处二维气动特性研究[J]. 南昌航空大学学报(自然科学版), 2015, 29(3): 21-25,48. DOI: 10.3969/j.issn.1001-4926.2015.03.004
LIN Yu-xiang, WANG Qi, LI Wei, DU Qi. Two-dimensional Aerodynamics Characteristics Study on Lift-fan Aircraft Openings in Flying Wing Configuration[J]. Journal of nanchang hangkong university(Natural science edition), 2015, 29(3): 21-25,48. DOI: 10.3969/j.issn.1001-4926.2015.03.004
Citation: LIN Yu-xiang, WANG Qi, LI Wei, DU Qi. Two-dimensional Aerodynamics Characteristics Study on Lift-fan Aircraft Openings in Flying Wing Configuration[J]. Journal of nanchang hangkong university(Natural science edition), 2015, 29(3): 21-25,48. DOI: 10.3969/j.issn.1001-4926.2015.03.004

带升力风扇飞翼布局飞机机翼开口处二维气动特性研究

Two-dimensional Aerodynamics Characteristics Study on Lift-fan Aircraft Openings in Flying Wing Configuration

  • 摘要: 带升力风扇飞翼布局飞机不仅可实现垂直/短距起降,还拥有飞翼布局飞机的气动优点。为获得开口对机翼气动特性的影响规律,对平飞状态下机翼开口中心处的纵向剖面进行气动仿真,分析升力系数、阻力系数和力矩系数随来流速度和迎角的改变而变化的特性。结果表明:在迎角一定的情况下,随着来流速度的增大,阻力系数和力矩系数呈上升趋势;来流速度一定时,随迎角加大,升力系数增大,阻力系数先减小后增大;力矩系数随之减小,且一直都产生低头力矩。研究结果对开口位置和形状的进一步优化提供了依据。

     

    Abstract: The lift-fan aircraft in flying wing configuration not only can be capable of short distance/vertical takeoff and landing(S/VTOL),but also have the aerodynamics advantages of the flying wing.In order to obtain the effect laws of the opening on the aerodynamic characteristics of the wing,the aerodynamics performance of the longitudinal center section of wing opening is studied by the aerodynamic simulation in horizontal flight.Moreover, the characteristics of lift coefficient,drag coefficient and moment coefficient changing with the change of flow velocity and angle of attack are also analyzed.The study shows that under the same angle of attack, with the increase of flow velocity,drag coefficient and moment coefficient are risen.Under the same flow velocity, with the increase of angle of attack,the lift coefficient is increased,the drag coefficient is decreased first and then increased,the moment coefficient is decreased, and always produce nose-down moment.The study results provide a basis for the further optimization of the opening position and shape.

     

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