Give a new description of blend - Wing - Body (BWB) blend tolerance. Model surface plane grid for calculating both aerodynamic force and stealth.

提出了融合度描述方法，通过建立统一的表面面元模型分析计算融合对气动特性和隐身特性的影响。

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Except that the selected sliding surface is formed by logarithmic helicoidal surface-logarithmic helicoidal surface-plane, no other simplifications or assumptions are made.

除选定滑动面为对数螺旋面—对数螺旋面—平面的形式外，没有其他任何的简化或假定。

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This is a special type of Earth model which traces its idealised "horizontal" surface - the plane on which, at any point, the pull of gravity is perpendicular to it.

BBC: Europe's Goce satellite probes Earth's gravity

It has a freezing point well below 32 degrees Fahrenheit or zero Celsius and therefore is able to prevent the precipitation that falls into it from freezing on the plane's surface.

CNN: Airplane deicing: The how and why

By using lightweight aerospace materials like carbon fiber, which has the strength of steel but weighs one-fifth as much, naval architects can design boats that plane across the surface of the water instead of plowing through it.

FORBES: Mine's Lighter