To address the technological gap in the full-process autonomous operation of “pre-deployment–activation–flight” for traditional tube-launched multirotor UAVs in complex water–air cross-media environments, a pre-deployed tube-launched quadrotor aircraft named Feiying is proposed, aiming to overcome the limitations of traditional systems in response latency and single-stage control and to meet the demands for long-duration pre-deployment, rapid activation, and fast response in complex environments. In this scheme, an innovative carbon-fiber/aluminum-alloy composite load-bearing structure and a torsion-spring-driven folding-wing mechanism are employed, and a hierarchical power-supply system is integrated with a state-machine-based full-process control model. Validation results indicate that Feiying can maintain low-power standby while being rapidly activated into its mission state and can quickly transition to autonomous flight mode during launch, demonstrating a reliable 30 d pre-deployment capability and a rapid response time of 0.1 s. This design achieves highly reliable deployment and high-speed responsiveness for pre-deployed tube-launched quadrotor UAVs and provides a technical foundation and verification support for subsequent engineering applications.
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