| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: propeller fan engine includes gas generator with compressor and power turbine, as well as propeller fan with annular gas channel, nozzle, streamer and blades, the bars of which are located in hollow posts. Gas channel is restricted with external and internal air annular channels of increased pressure, which are connected at the inlet to the compressor. Hollow posts are separated into the front, middle and rear air cavities. Annular air channels of increased pressure are made so that they interconnected with the front and rear air cavities of posts. Middle cavity in which bar of blade is located is connected at the inlet to atmosphere, and at the outlet through inner cavity of sleeve of propeller fan to channels in streamer after the nozzle. Annular air channels of increased pressure at the outlet are connected to gas channel before the nozzle. ^ EFFECT: higher reliability of propeller fan engine by decreasing the temperature of blades of propeller fan. ^ 3 dwg |
