...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Aeronautical Journal >On the application of light weight materials to improve aircraft fuel burn - reduce weight or improve aerodynamic efficiency?
【24h】

On the application of light weight materials to improve aircraft fuel burn - reduce weight or improve aerodynamic efficiency?

机译：关于使用轻质材料来改善飞机燃油消耗-减轻重量或提高空气动力效率？

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An analysis, based upon exact relations and previously published approximate relations, is presented. It describes the connection between changes in aircraft weight and changes in the energy to revenue work ratio (ETRW), which, for a given aircraft on a given route, correspond to changes in trip fuel burn. This is used to establish the link between weight saving and fuel burn improvement at both the total aircraft and the component levels. The analysis is then extended to address the impact of trading weight savings anywhere on the aircraft for increased wing aspect ratio, whilst the aircraft total weight remains the same. It is shown that, for flights in excess of about 350 km, if saving fuel is the objective and provided that all the aerodynamic design and airworthiness requirements can be met, it is better to trade weight saving for increased aspect ratio. In general, the ratio of fuel burn reductions for traded to non-traded weight varies with aircraft size, design range, distance flown and payload carried, with the maximum values, for typical operational payloads, ranging from 2·8, for the smaller aircraft, to 2·2 for the largest aircraft, with medium haul operations deriving the largest benefit. It is estimated that, over the past 50 years, about 10% of the operational empty weight has been traded for increased aspect ratio, giving close to a 20% improvement in ETRW. Finally, estimates are produced for the impact of weight reduction and traded weight reduction on the fuel burn for the current global fleet.
机译：提出了基于精确关系和先前发布的近似关系的分析。它描述了飞机重量变化与能源收入比（ETRW）之间的联系，对于给定航线上的给定飞机，这对应于旅行燃油消耗的变化。这用于在整个飞机和部件级别上减轻重量和改善燃油消耗之间建立联系。然后扩展分析，以解决在任何地方节省重量以增加机翼长宽比对飞机造成的影响，而飞机的总重量保持不变。结果表明，对于超过350公里的飞行，如果以节省燃油为目标并且在满足所有空气动力学设计和适航性要求的情况下，则最好以减轻重量来换取更大的长宽比。一般而言，交易重量与非交易重量的燃油消耗减少量之比随飞机尺寸，设计范围，飞行距离和所载有效载荷而变化，较小型飞机的典型有效载荷的最大值为2·8，对于最大的飞机，则为2·2，而中程运输则可带来最大的收益。据估计，在过去的50年中，约有10％的可用空重被换成增加的纵横比，使ETRW改善了近20％。最后，针对当前全球机队的重量减轻和贸易重量减轻对燃油消耗的影响进行了估算。

著录项

  • 来源
    《The Aeronautical Journal》 |2014年第1206期|903-934|共32页
  • 作者

    D. I. A. Poll;

  • 作者单位

    Cranfield University Bedfordshire UK;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号