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2025年7月19日周六
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2025年7月17日周四
  1. arXiv eVTOL预印本历史资料

    Computing Longitudinal Dynamic Derivatives of a VTOL Aircraft Using CFD Simulations and Forced-Oscillation Model

    This study presents a comprehensive evaluation of dynamic aerodynamic derivatives during aircraft transition phases using advanced CFD simulations and forced oscillation testing. Two case studies are examined: a three dimensional fighter aircraft (Standard Dynamic Model, SDM) and a UT24 eVTOL model. The transition phase from vertical hover to forward cruise is analyzed with harmonic oscillation techniques to capture unsteady aerodynamic forces and moments. Grid sensitivity studies and multi zone meshing strategies ensure simulation accuracy, while ANSYS Fluent finite volume solver and coupled pressure velocity algorithms provide high fidelity results. Dynamic derivatives are derived from variations in angle of attack, flight path, and rotational movements, with experimental and numerical data validating the approach. The findings offer valuable insights for robust control design and stability analysis, supporting future advancements in urban air mobility and aerospace engineering. Overall, this approach demonstrates substantial promise for optimizing aircraft performance during critical transition phases. These results pave the way for future innovations(预印本;同行评审状态请核对原文。)

2025年7月16日周三
  1. 时的科技中文公告与历史目录历史资料

    10亿美元!中阿合作,时的科技E20 eVTOL斩获350架海外订单!

    7月16日,阿联酋企业Autocraft与时的科技签署采购协议,订单金额10亿美元。Autocraft采购350架E20 eVTOL,与时的科技携手推进E20 eVTOL在中东及北非地区低空旅游、空中出行等多元场景的商业化落地,共同加速低空出行新模式的规模化部署与运营。 当天上午,阿联酋民航总局局长赛义夫·苏韦迪阁下带队莅临时的科技调研,阿联酋驻上海总领事穆(披露日:2025-07-16)

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2025年7月15日周二
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