초록 ▼

A wall of a multi-flow turbojet-engine thrust-reverser cold-flow duct defines an air intake for a main air takeoff (F′1) and an additional secondary air takeoff (F′2) which assures the suction of the boundary layers of the flow. The secondary air takeoff may consist of a transverse slit. The takeoff

A wall of a multi-flow turbojet-engine thrust-reverser cold-flow duct defines an air intake for a main air takeoff (F′1) and an additional secondary air takeoff (F′2) which assures the suction of the boundary layers of the flow. The secondary air takeoff may consist of a transverse slit. The takeoffs may be used to supply cooling, pressurizing or ventilating air to the airplane or hot engine part.

대표청구항 ▼

In a cold flow duct of a multi-flow turbojet engine defined by an outer wall, an inner wall, and upper and lower divider walls, wherein air flows from an upstream direction toward a downstream direction, the improvements comprising: (a) main air takeoff means communicating with the cold flow duct th

In a cold flow duct of a multi-flow turbojet engine defined by an outer wall, an inner wall, and upper and lower divider walls, wherein air flows from an upstream direction toward a downstream direction, the improvements comprising: (a) main air takeoff means communicating with the cold flow duct through the inner wall so as to draw off a portion of the air flowing through the cold flow duct, the main air takeoff means having an intake in a first radial location and having a furthermost upstream portion and, (b) secondary air takeoff means located adjacent to and downstream of the furthermost upstream portion of the intake of the main air takeoff means to withdraw air therethrough so as to minimize a turbulent boundary layer flow in the main air takeoff means, the secondary air takeoff means being in a second radial location radially displaced from the first radial location.