Core Viewpoint - The article discusses the development of a new type of micro aerial vehicle (FWMAV) called Tumbler FWMAV, which utilizes a self-stabilizing mechanism inspired by the principles of a tumbler toy, allowing it to maintain flight stability without relying on external control systems [1][2][6]. Group 1: Innovation in Flight Mechanism - The Tumbler FWMAV introduces a "tumbler-type passive stabilization" concept, where aerodynamic forces become part of the control system, eliminating the need for sensors and algorithms [2][4]. - The design mimics the self-recovery principle of a tumbler toy, allowing the vehicle to return to a balanced state when disturbed by external forces [4][5]. Group 2: Structural Design and Performance - The Tumbler FWMAV weighs only 241 milligrams and has a wingspan of 68 millimeters, featuring a structure composed of a flapping wing module, a damping chamber, and a supporting frame [7][9]. - The vehicle's lower section is designed as a circular air chamber, which generates a restoring torque when the vehicle's attitude deviates, allowing for rapid response to disturbances [9][11]. Group 3: Experimental Validation - The Tumbler FWMAV demonstrated its self-stabilizing capabilities through various tests, including airflow interference, collision disturbance, and roll recovery experiments, showing significant improvements in recovery time and stability [12][13][14]. - In continuous flight tests, the vehicle achieved over 40 minutes of hovering time at a driving frequency of 240Hz, indicating effective energy management and stability [16][17]. Group 4: Future Directions - The research team plans to explore topology-optimized wing designs and fluid-structure interaction simulations to further enhance lift efficiency and develop lightweight high-pressure drives for true wireless autonomous flight [18]. - There is also an intention to integrate passive stability with active attitude control to advance the capabilities of insect-scale flying vehicles from "self-stabilization" to "self-control" [18].