装载约束下飞翼布局气动与隐身综合设计

• 作 者: 张乐 周洲 许晓平
• 机 构: 中国工程物理研究院总体工程研究所,西北工业大学航空学院,
• 出 处: 飞行力学
• 发表日期: 2017年04期
• 关键词: 飞翼 双鼓包 综合设计 低鼓包 装载布置 隐身性能 迎角 气动特性 模型表面 内翼

基于飞翼布局大鼓包式机身,在装载布置约束下开展了气动与隐身综合设计,提出了一种机身低鼓包和双鼓包模型。结合可靠的CFD和隐身计算方法,初步探索了低鼓包和双鼓包气动与隐身特性及机理。结果表明:双鼓包模型极大地降低了全机纵向基本气动性能,但在大迎角时会推迟外翼段前缘分离,对外翼气动特性有一定改善;低鼓包与双鼓包模型整体上RCS差异较小,但双鼓包模型侧向隐身性能更优异。

Based on the fuselage fuselage with flying wing layout, integrated design of aerodynamic and camouflage was carried out under the restraint of loading arrangement. A low-bulge fuselage and double-bulge fuselage model was proposed. Combined with the reliable CFD and stealth calculation method, the aerodynamic and stealth characteristics and mechanism of the low drum and double drum kits are preliminary explored. The results show that the double-drum model greatly reduces the longitudinal aerodynamic performance of the whole aircraft. However, at high angles of attack, the separation of the leading edge of the outer wing segment is delayed and the aerodynamic characteristics of the outer wing are improved. The RCS of the low-bulge and double- Smaller, but double-drum bag model lateral stealth performance more excellent.