Yang Lili, Fang Zhifei, Deng Huichao
Robotics Institute, Beihang University, Beijing 100191, China.
Biomimetics (Basel). 2024 Nov 22;9(12):720. doi: 10.3390/biomimetics9120720.
Many flights, with their precise positioning capabilities, have provided rich inspiration for designing insect-styled micro air vehicles. However, researchers have not widely studied their flight ability. In particular, research on the maneuverability of using integrated kinematics and aerodynamics is scarce. Using three orthogonally positioned high-speed cameras, we captured the 's banking turns in the climbing flight in the laboratory. We used the measured wing kinematics in a Navier-Stokes solver to compute the aerodynamic forces acting on the insects in five cycles. can rapidly climb and turn during phototaxis or avoidance of predators. During banked turning in climbing flight, the translational part of the body, and the distance flown forward and upward, is much greater than the distance flown to the right. The rotational part of the body, through banking and manipulating the amplitude of the insect flapping angle, the stroke deviation angle, and the rotation angle, actively creates the asymmetrical lift and drag coefficients of the left and right wings to generate right turns. By implementing banked turns during the climbing flight, the insect can adjust its flight path more flexibly to both change direction and maintain or increase altitude, enabling it to effectively avoid obstacles or track moving targets, thereby saving energy to a certain extent. This strategy is highly beneficial for insects flying freely in complex environments.
许多飞行方式凭借其精确的定位能力,为设计昆虫样式的微型飞行器提供了丰富的灵感。然而,研究人员尚未对其飞行能力进行广泛研究。特别是,关于结合运动学和空气动力学的机动性研究很少。我们使用三个正交定位的高速摄像机,在实验室中捕捉了昆虫在爬升飞行中的倾斜转弯。我们在Navier-Stokes求解器中使用测量到的翅膀运动学数据,来计算五个周期内作用在昆虫身上的气动力。昆虫在趋光或躲避捕食者时能够快速爬升和转弯。在爬升飞行的倾斜转弯过程中,身体的平移部分以及向前和向上飞行的距离,远大于向右飞行的距离。身体的旋转部分通过倾斜和操纵昆虫拍动角度的幅度、冲程偏差角度和旋转角度,主动产生左右翅膀不对称的升力和阻力系数以产生右转。通过在爬升飞行中进行倾斜转弯,昆虫可以更灵活地调整其飞行路径,既能改变方向又能保持或增加高度,使其能够有效避开障碍物或追踪移动目标,从而在一定程度上节省能量。这种策略对在复杂环境中自由飞行的昆虫非常有益。