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Effects of Cubic Wing Loading Parameter on Airplane Wing Sizing and Parasitic Drag

机译：立方翼装载参数对飞机翼尺寸和寄生阻力的影响

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This study is about the applicability of cubic wing loading (CWL) in conceptual aircraft design and flight performance. Cubic wing loading is a dimensionless parameter and is related to the square cube law. Cubic wing loading, or volumetric wing loading, offers a size-independent density factor for comparative study of aircraft made of similar building materials. CWL, density factor, is naturally depends on aircraft building materials. Also, CWL is concerned with the ratio of fuselage to wing size in aircraft because wings and fuselage have different stiffness and density values. Considering the aircraft mass as a whole, the density values of large wing aircraft are lower than those of small wing aircraft. Cubic wing loading is more applicable for initial wing sizing than wing loading. The aspect ratio is a dimensionless wing shape parameter and CWL is a dimensionless density factor. Thus, the AR-CWL graph can be used for the comparative study of aircraft. Also, CWL is a measure of relative wetted area i.e., wetted area over wing area. Low CWL means the aircraft need less power-to-weight ratio (better fuel economy) because high relative wetted area means high parasitic drag.
机译：本研究涉及立方翼装载（CWL）在概念飞机设计和飞行性能方面的适用性。立方翼装载是一种无量纲参数，与方形立方体法有关。立方翼装载或体积翼装载，为由相似建筑材料制成的飞机的比较研究提供了尺寸无关的密度因素。 CWL，密度因子自然取决于飞机建筑材料。而且，CWL涉及机身与飞机翼尺寸的比率，因为翅膀和机身具有不同的刚度和密度值。考虑到整体的飞机质量，大型翼飞机的密度值低于小翼飞机的密度值。立方翼装载更适用于初始机翼尺寸而不是机翼装载。纵横比是无量纲翼形参数，CWL是无量纲密度因子。因此，AR-CWL图可用于飞机的比较研究。此外，CWL是翼面积的相对湿润区域的衡量标准。低CWL意味着飞机需要更少的功率 - 重量比（更好的燃料经济性），因为高相对湿润区域意味着高寄生阻力。

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