公开(公告)号：WO1989010869A1

公开(公告)日：1989-11-16

申请号：PCT/EP1989000499

申请日：1989-05-05

Applicant: SCHATZMAYR, Dieter

Inventor： SCHATZMAYR, Dieter ,  BUCHELT, Benno

IPC: B64C39/00

CPC classification number: B64C11/001 ,  B64C27/20

Abstract: To increase the intake-side low-pressure thrust over the intake airfoil in an encased axial-flow blower in a lift-jet engine with a highly curved intake airfoil while reducing to a minimum the drive-generating intake propulsive thrust over the surface of the blower rotor, the geometrical relationships between the intake airfoil and the twist of the blades (3) are chosen so that the total pressure differential between the upper and lower sides of the blower is greater radially outward than radially inward. The profile chord angle ( beta ) is modified very slightly in the central region of the rotor blades (3) and any guide blades (26) downstream of the blower rotor preferably have a corresponding symmetrical twist.

Abstract translation: 在具有高度弯曲的入口翼型的升力喷气发动机的包围的轴向流动鼓风机中增加进气翼面上的进气侧低压推力，同时将最小的驱动产生进气推进推力超过 鼓风机转子，进气翼片和叶片（3）的扭转之间的几何关系被选择为使得鼓风机的上侧和下侧之间的总压差比径向向内径向向外更大。 轮廓弦角（β）在转子叶片（3）的中心区域被非常轻微地改变，并且在鼓风机转子下游的任何导向叶片（26）优选地具有相应的对称扭转。