基于任务需求的高速旋翼机多方案对比研究

高速旋翼机能够满足我国复杂地理环境对航空装备提出的特定任务需求,是未来飞行器重点研究方向之一。为探究在特定任务下不同高速旋翼机构型的性能特点和任务能力,本文围绕我国高原、远洋任务需求,提出满足大速度、远航程、强机动等要求的双倾转旋翼、四倾转旋翼构型概念方案。基于任务需求指标建立总体参数估算模型、飞行性能计算模型和任务效能评估模型,从悬停效率、巡航性能、投送能力、机动能力等多个维度对不同构型方案进行对比分析,为未来高速旋翼机研究提供参考。

面向多任务场景的民用高速旋翼机方案综合评估方法

高速旋翼机兼有垂直起降和高速巡航的优点,在民用领域具有巨大的发展空间,但目前民用高速旋翼机的发展依然处于起步阶段。为解决民用高速旋翼机方案选择复杂度的问题,为民用高速旋翼机方案确定提供决策依据,提出一种面向多任务场景的民用高速旋翼机方案综合评估方法。首先,面向多个民用任务场景,在充分调研和征求专家意见的基础上建立民用高速旋翼机方案综合评估指标体系;其次,基于层次分析法建立综合评估模型,构建配套判断矩阵,确定因素权重,利用3款成熟机型对综合评估方法进行科学性检验,在专家综合观点与评估结果之间建立良好的一致性;最后,给出5种布局在3个典型任务场景下方案构型的综合评估结果。该综合评估方法构建科学、评估准确,为国内民用高速旋翼机方案的筛选决策提供有效指导。

高速旋翼机典型构型发展与对比分析研究

研究高速旋翼机两种典型构型——倾转旋翼机和共轴刚性旋翼机的代表机型V-22和S-97的发展情况和两种构型的关键技术,并对V-22和S-97的主要性能进行对比,提出未来高速旋翼机的应用前景和对我国发展高速旋翼机的启示。

RESEARCH ON SCHEME OF HIGH-SPEED ROTOR／WING TRANSITION HELICOPTER RD15

To analyze the existing schemes of high-speed rotorcrafts and some new technologies, a new conceptual sketch of the high-speed rotor/wing transition helicopter RD15 is proposed. The overall layout of the RD15 is given out and the transition process from the helicopter mode to the airplane mode is designed. The lift system consists of a circular disk-wing with four retractable blades. The technology of individual blade control is adopted for flight control in hover and low speed flight. The tail is a vectored thrust duct propeller. It can provide the anti-torque in hover, and offer the multi-directional controls and propulsion drive for the airplane mode flight. The aerodynamic characteristics and key technologies in the transition process for this layout, including the nose up angle of disk-wing, the length of the blade, rotation speed, pitch angle and other parameters, are theoretically ana lyzed and experimentally tested. Calculation and experiments show that the shift process of the lift, the power and controls are smooth, and the designed scheme is feasible.