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Aircraft Design with Active Load Alleviation and Natural Laminar Flow

机译:减轻主动载荷和自然层流的飞机设计

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We incorporate maneuver load alleviation (MLA), gust load alleviation (GLA), and natural laminar flow (NLF) into aircraft conceptual design. The present work uses physics-based methods to capture the dynamic interplay among the three technologies. The results demonstrate that the simultaneous application of MLA and GLA can tilt the balance of the transonic Mach-sweep-thickness (MAT) trade in favor of high aspect ratio, low-sweep natural laminar flow wings. A minimum cost turbulent aircraft designed concurrently with MLA and GLA control systems can achieve a significant 10% reduction in fuel burn and 3.4% reduction in cost relative to a baseline design without load control. The fuel and cost savings grow to 15% and 5% respectively when we design for NLF. The aeroservoelastic conceptual design framework developed in this thesis can serve as a platform for assessing future aircraft configurations and operational paradigms aimed at reducing aircraft fuel consumption and environmental impact.
机译:我们将机动减轻负荷(MLA),阵风减轻负荷(GLA)和自然层流(NLF)纳入飞机的概念​​设计中。本工作使用基于物理学的方法来捕获这三种技术之间的动态相互作用。结果表明,同时使用MLA和GLA可以倾斜跨音速马赫扫掠厚度(MAT)贸易的平衡,而有利于高纵横比,低扫掠的自然层流翼。与没有负载控制的基准设计相比,与MLA和GLA控制系统同时设计的最低成本的湍流飞机可以显着减少10%的燃油消耗和3.4%的成本。当我们为NLF设计时,燃料和成本节省分别增长到15%和5%。本文开发的航空弹性概念设计框架可以作为评估未来飞机配置和运行范式的平台,以减少飞机的油耗和环境影响。

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