【摘要】 无人驾驶战斗机将是未来战斗机发展的可能方向,为了隐身及其他目的,飞翼布局是一种可供选择的形式。这时机身不很细长,在大迎角下的非对称涡将不会出现多涡系,而涡破裂现象会影响机身涡的非对称性及气动特性。提出了在风洞及水洞中进行的不同截面形状的细长机身的实验结果。讨论了迎角、滚转角及截面形状对机身侧力的影响,并结合流态对实验结果进行了分析,有助于加深对这类机身气动力产生机理的了解。更多还原

【Abstract】 In order to strengthen maneuverability of fighter aircrafts and decrease rader wave reflection a tailless fighter aircraft has become one of new research directions.The research work discussed in this paper is based on the background of yawing control project of the tailless fighter.The fineness of the model bodies tested is 5.2.The section shapes of the models are circle,elliptic and elliptic section with a sharp edge,which is similar to the section of the nose of the tailless airplane.The flow phenomenon,especially asymmetric one,over different bodies were investigated at angles of attack ranging from 0° to 90° in a water tunnel.Measurement of forces was performed in a wind tunnel.Test results show that side force change of the cone-cylinder body is very large.The body with the sharp edge has minimum side force compared with other two configurations of body.更多还原