跳到正文

全部动态

今日 0 条
2024年11月19日周二
2024年11月18日周一
2024年11月17日周日
2024年11月16日周六
2024年11月15日周五
2024年11月14日周四
  9. 低空街地方动态历史资料

    六项低空经济苏州市地方标准发布

    在苏州市市场监管局的推动下，近日，六项低空经济苏州市地方标准正式发布。其中，部分标准填补了相关领域空白。六项低空经济苏州市地方标准：《低空5G通信基站建设...（披露日：2024-11-14）

2024年11月13日周三
  1. arXiv eVTOL预印本历史资料

    Energy Optimal Traversal Between Hover Waypoints for Lift+Cruise Electric Powered Aircraft

    Advanced Air Mobility aircraft require energy efficient flight plans to be economically viable. This paper defines minimum energy direct trajectories between waypoints for Lift+Cruise electric Vertical Take-Off and Landing (eVTOL) aircraft. Energy consumption is optimized over accelerated and cruise flight profiles with consideration of mode transitions. Because eVTOL operations start and end in hover for vertical take-off and landing, hover waypoints are utilized. Energy consumption is modeled as a function of airspeed for each flight mode, providing the basis to prove energy optimality for multi-mode traversal. Wind magnitude and direction dictate feasibility of straight-line traversal because Lift+Cruise aircraft point into the relative wind direction while hovering but also have a maximum heading rate constraint. Energy and power use for an experimentally validated QuadPlane small eVTOL aircraft are characterized with respect to airspeed and acceleration in all flight modes. Optimal QuadPlane traversals are presented. Constraints on acceleration and wind are derived for straight-line QuadPlane traversal. Results show an optimal QuadPlane $500m$ traversal between hover waypoints saves $71\%$ energy compared to pure vertical flight traversal for a representative case study with a direct $4m/s$ crosswind. Energy optimal eVTOL direct trajectory definition with transitions to and from hover is novel to this work. Future work should model three-dimensional flight and wind as well as optimize maneuver primitives when required.（预印本；同行评审状态请核对原文。）