KT-1无人机用临近空间螺旋桨三维模型（2018）

该模型为KT-1临近空间太阳能无人机用螺旋桨几何外形，主要针对白天在20km高度平飞巡航状态、夜间在10km高度平飞巡航状态进行设计，同时兼顾其在不同高度的爬升及巡航性能。该螺旋桨为拉力桨，每架飞机配备两付拉力桨，且螺旋桨采用正反桨的设计方式，从无人机的机尾向机头看，左侧桨顺时针转动，右侧桨逆时针转动。螺旋桨桨径2.5米， 20km高度巡航效率78%，10km高度巡航效率80%。

This model refers to the geometric profile of the propeller for the KT-1 near-space solar-powered UAV. It is primarily designed for the level flight cruise states at 20 km altitude during daytime and 10 km altitude at nighttime, while also taking into account its climb and cruise performance across different altitudes. This propeller is a thrust propeller. Each aircraft is equipped with two pairs of such thrust propellers, which adopt a counter-rotating design. When viewed from the tail to the nose of the UAV, the left propeller rotates clockwise while the right propeller rotates counterclockwise. The propeller has a diameter of 2.5 meters, with a cruise efficiency of 78% at 20 km altitude and 80% at 10 km altitude.