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  1. arXiv先进空中交通研究历史资料

    Airspeed Forward-Invariance for Unpowered Fixed-Wing Aircraft

    Autonomous fixed-wing flight is becoming a key capability in aerial robotics, enabling sensing, mobility, and contingency operations across both small-scale Uncrewed Aircraft Systems and large-scale Advanced Air Mobility. During unpowered operation in fixed-wing platforms, airspeed is regulated solely through potential-kinetic energy exchange, making airspeed dynamics highly sensitive to guidance commands, particularly under wind. This paper presents a viability-based airspeed protection for ground-referenced guidance in steady wind, where airspeed evolution depends explicitly on the commanded flight path angle. Leveraging Nagumo's tangency condition, we derive a closed-form, wind-dependent characterization of admissible guidance commands that guarantees forward invariance of a safe airspeed envelope. These conditions are embedded within an offline quadratic programming framework to certify airspeed-safe maneuver primitives for non-ascending flight at the guidance level. The approach is validated using a high-fidelity unpowered fixed-wing aircraft model on gliding trajectories formed by concatenating certified maneuver primitives, demonstrating strict airspeed boundedness. Future work will address unsteady wind fields and flight experiments.(预印本;同行评审状态请核对原文。)

4月22日周三
  1. 埃森工业空天新闻历史资料

    中国航空工业自主研制AG600飞机获颁中国民航局型号合格证

    4月20日,我国首次按照中国民航适航规章完全自主研制的AG600飞机在京获颁中国民航局型号合格证,标志着全球起飞重量最大的民用水陆两栖飞机通过了严格测试和验证,研制取得圆满成功,获得市场“准入证”。(披露日:2026-04-22)

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