APPARATUS TO CONTROL BOUNDARY LAYER ON AERODYNAMIC SURFACE OF AIRCRAFT Russian patent published in 1994 - IPC

FIELD: aviation. SUBSTANCE: apparatus has swirl chamber 1, made in the form of a cavity, located in rear part of the aerodynamic surface and connected with a low pressure source 4. A streamlined body 2 is placed in swirl chamber 1. Space between bode 2 and walls of the chamber forms ring-shaped canal 3. Several swirl chambers may be positioned on surface of the rear part. In the case chambers are provided with spillways 6 with exits into common for all chambers gas dynamic canal 7, connected with source of low pressure 4. Spillway 6 with walls of the gas dynamic canal are functioning a ejectors. The gas dynamic canal may be made in the form of a canal with receiver 8. In the case, entering the receiver part of the canal from ejectors side is made in the form of diffuser 9. The receiver may be communicated with area of low pressure in flowing around stream by canals 10 with control shutters 11. Turning shutters 12 and 13 may be mounted in canals 7 and ejectors. Source of low pressure may be made as ejector 16, formed at the entrance in the diffuser of turbine-jet engine 15. EFFECT: apparatus ensures aircraft aerodynamic surface continuous air streamlining with low energy consumption. 6 cl, 4 dwg