Lift on a Low Speed Circular Arc Wing due to Air Compression

• 作者: Kern E. Kenyon
• 来源期刊: 自然科学期刊(英文)
• 学科: 物理学
• 关键词: Slow Flight Lift Air Compressibility
• 年，卷（期）: zrkxqkyw_2021,（3）
• 页码范围: 88-90
• 页数: 3页
• 分类号: O35

摘要

A fluid flow model consisting of Bernoulli’s law in its normal form, the equation of state of air, and the cross-stream force balance between a downward pressure gradient and the upward centrifugal force on fluid particles moving along curved streamlines over the top circular wing surface involving three equations in three unknowns (pressure, density and velocity) are solved to show that both density and pressure decrease upward as the inverse square of the distance from the circle’s center, and the velocity is independent of that dis-tance. These derived characteristics are used to explain the lift force on the wing in what is believed to be a novel way.