STRUCTURE REDUCING AERODYNAMIC DRAG OF BODY IN FLUID, ITS USE, BODY CONTAINING SUCH STRUCTURE, FLOW CHANNEL, JET ENGINE, AND DRIVE CONTAINING SUCH BODY, FILM FOR SUCH BODY

摘要

FIELD: engines and pumps.SUBSTANCE: group of inventions refers to aerodynamics. Group of inventions includes the body flowed by the fluid, flow channel, jet engine, drive, film for such body, and use of structure flowed by the fluid. The fluid flowed body (10) contains a fluid (30) flown surface (12), having common shape determining main direction (14) of flow over the surface (12). The surface (12) contains structure decreasing the aerohydrodynamic drag of the body (10), that contains cavity (16.2-16.3) having cross-section essentially in form of round segment to create the fluid vortex (26.2-26.3). The structure contains input section (18.2-18.3) inclined relatively to the main direction of the flow towards the cavity (16.2-16.3), and located along the main flow direction upstream the cavity (16.2-16.3), to remove the fluid flow (24) in the cavity (16.2-16.3). The structure is made with possibility of the fluid vortex (26.2-26.3) creation inside the cavity (16.2-16.3).EFFECT: group of inventions reduces aerohydrodynamic drag of the body in fluid.16 cl, 2 dwg