由简单的平板构成的反应釜的搅拌桨。搅拌釜中的最主要部件是搅拌桨，它应能保证液体的高效混合但又节省功率。平桨可以有二叶到八叶。平桨搅拌使液体沿径向流动，液体流到壁面的再折向上和向下，形成循环。它适用于中等黏度液体的搅拌，转速适中或较高。
传统的流量开关使用平桨来检测液体的运动。
Conventional flow switches use flat paddles to detect liquid movement.
粘度增大，单位体积功增大时泛能式桨微观混合效果优于二叶平桨。
In higher viscosity and higher power dissipation rate per unit mass, micromixing ability of full-zone is better than paddle impeller.
尾梁从机身渐细到后掠尾垂翼，尾螺旋桨在锥形尾垂翼右侧，二个尾平翼被装在尾梁两侧。
The tail boom tapers from the main body to the swept-back, tapered fin with a rotor on the right. Two flats are mounted on the both side of the boom.
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