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2024年7月17日周三
2024年7月15日周一
2024年7月14日周日
2024年7月12日周五
  1. 艾邦智飞｜eVTOL企业与整机历史资料

    智航飞碟eVTOL顺利完成盐田区首飞

    7月11日晚，智航飞碟eVTOL盐田区首飞活动在大梅沙海滨公园举行。盐田区委书记李忠，粤港澳大湾区新兴产业发展 […]（披露日：2024-07-12）

2024年7月10日周三
2024年7月9日周二
2024年7月3日周三
2024年7月1日周一
2024年6月29日周六
2024年6月28日周五
2024年6月27日周四
2024年6月25日周二
  1. arXiv eVTOL预印本历史资料

    Optimal DC-link Voltage from Weight and Loss Perspective for eVTOLs

    Electric vertical takeoff and landing (eVTOL) aircraft are emerging as a modern transportation solution aimed at reducing urban traffic congestion and improving the carbon footprint. The power architecture in eVTOLs is defined by the dc bus formed by the battery packs and the power converter used to drive eVTOL motors. A high dc bus voltage is preferred for the power architecture since it can reduce the weight of power cables for a given power rating. However, the impact of high dc bus voltage on the efficiency of the drivetrain power converter must be considered, since reduced efficiency leads to poor battery pack utilization. In this paper, a systematic optimization study is performed considering SiC-based inverter for the drivetrain power converter. Optimal value of dc bus voltage is determined considering the flight profile of eVTOLs. A power converter topology is proposed that can provide optimal performance and enhance the lifetime of the batteries along with providing better monitoring, diagnostics and protection. The optimization strategy is validated experimentally, demonstrating the proposed power architecture's ability to maximize efficiency while enhancing the safety of the battery energy storage system in eVTOLs.（预印本；同行评审状态请核对原文。）

2024年6月24日周一
2024年6月23日周日
2024年6月21日周五
2024年6月20日周四
2024年6月18日周二
2024年6月13日周四
2024年6月12日周三
  1. arXiv eVTOL预印本历史资料

    An Integrated Supply Chain Network Design for Advanced Air Mobility Aircraft Manufacturing Using Stochastic Optimization

    Electric vertical takeoff and landing (eVTOL) aircraft manufacturers await numerous pre-orders for eVTOLs and expect demand for such advanced air mobility (AAM) aircraft to rise dramatically soon. However, eVTOL manufacturers (EMs) cannot commence mass production of commercial eVTOLs due to a lack of supply chain planning for eVTOL manufacturing. The eVTOL supply chain differs from traditional ones due to stringent quality standards and limited suppliers for eVTOL parts, shortages in skilled labor and machinery, and contract renegotiations with major aerospace suppliers. The emerging AAM aircraft market introduces uncertainties in supplier pricing and capacities, eVTOL manufacturing costs, and eVTOL demand, further compounding the supply chain planning challenges for EMs. Despite this critical need, no study has been conducted to develop a comprehensive supply chain planning model for EMs. To address this research gap, we propose a stochastic optimization model for integrated supply chain planning of EMs while maximizing their operating profits under the abovementioned uncertainties. We conduct various numerical cases to analyze the impact of 1) endogenous eVTOL demand influenced by the quality of eVTOLs, 2) supply chain disruptions caused by geopolitical conflicts and resource scarcity, and 3) high-volume eVTOL demand similar to that experienced by automotive manufacturers, on EM supply chain planning. The results indicate that our proposed model is adaptable in all cases and outperforms established benchmark stochastic models. The findings suggest that EMs can commence ma（预印本；同行评审状态请核对原文。）

  2. 时的科技中文公告与历史目录历史资料

    时的科技与航空工业计算所达成战略合作

    6 月 12 日，上海时的科技有限公司（以下简称“时的科技”）与中国航空工业集团公司西安航空计算技术研究所 (以下简称“航空工业计算所”)达成战略合作，在第十届中国（上海）国际技术进出口交易会现场举行战略合作协议签约仪式。 时的科技创始人兼 CEO 黄雍威、航空工业计算所所长胡林平在“上交会发布”现场进行联合发布，并在展会现场签约。中国民用航空华东地区管理局（披露日：2024-06-12）

2024年6月7日周五