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Aircraft Design with Active Load Alleviation and Natural Laminar Flow

机译：主动载荷减轻和自然层流的飞机设计

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摘要

Maneuver load alleviation, gust load alleviation, and natural laminar flow are integrated into aircraft conceptual design. The concurrent design of the aircraft and its active load alleviation systems can yield significant gains. The simultaneous application of maneuver load alleviation and gust load alleviation to a short-haul aircraft leads to an 11% reduction in fuel burn and 7% reduction in direct operating cost. These savings are diminished if maneuver load alleviation and gust load alleviation are applied independently. The synergy between active load control and natural laminar flow is also explored. It is possible to invest some of the weight savings from load alleviation to achieve extensive laminar flow. The combination of load alleviation and natural laminar flow increases the fuel and cost savings to upwards of 18 and 11%, respectively. It is concluded that load alleviation can shift the transonic transport optimum toward low-sweep, natural laminar flow wings. Sensitivity studies finally demonstrate that contemporary commercial aircraft should be able to meet the control requirements for effective gust load alleviation.
机译：减轻机动载荷，减轻阵风载荷和自然层流已集成到飞机的概念​​设计中。飞机及其主动负载减轻系统的并行设计可以产生可观的收益。在短途飞机上同时应用机动减轻负荷和阵风减轻负荷，可将燃油消耗减少11％，并将直接运营成本减少7％。如果分别应用机动减轻负荷和阵风减轻负荷，则这些节省将减少。还探讨了主动载荷控制与自然层流之间的协同作用。可以通过减轻负载来节省一些重量，以实现广泛的层流。减轻负荷和自然层流相结合，可分别将燃油节省和成本节省分别提高18％和11％。结论是减轻负荷可以使跨音速的最佳传输向低扫频，自然层流翼动。敏感性研究最终表明，当代商用飞机应该能够满足有效减轻阵风载荷的控制要求。

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  • 来源
    《Journal of Aircraft》 |2014年第5期|1532-1545|共14页
  • 作者

    Xu Jia; Kroo Ilan;

  • 作者单位

    Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA;

    Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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