| 摘要 |
FIELD: aircraft engineering. ^ SUBSTANCE: invention relates to aircraft engineering, namely, to propellers. Proposed propeller comprises hub and blades. Note that one set of blades is arranged at positive angle to the plane perpendicular to blade section circumferential speed vector, while another set is mounted at negative angle. Said angle is formed by blade front edge and plane perpendicular to blade section circumferential speed vector. Blade ends of both sets are interconnected. ^ EFFECT: increased aircraft horizontal speed. ^ 1 dwg |
