Abstract: a kind of backward-trailed airfoilblade was introduced and compared with general airfoilblade.
摘要：介绍了一种后拖式机翼型叶片，并与普通机翼型叶片作了比较。
2
The way to improve total pressure efficiency by appropriate inclined cut of airfoilblade tip was studied.
分析了对后拖式机翼型叶片的叶尖进行适当切割，可以提高全压效率的原因。
3
The measurements show that the airfoilblade fan prevails over the plate one in the aspects of total pressure efficiency, stable operation range and high efficient operation range.