HYDRODYNAMIC PROPULSOR Russian patent published in 1999 - IPC

FIELD: water and air transport. SUBSTANCE: propulsor has housing with impeller mounted inside it; impeller is provided with radial blades. Inner lateral surface of housing is made in form of semicylinder mounted at minimum clearances between it and blades. Parallel lateral planes are smoothly engageable with surface of semicylinder; length of each lateral plane is no less than radius of semicylinder. One lateral surface if housing has opening whose radius is lesser than radius of semicylinder. EFFECT: reduction of overall dimensions of propulsor; facilitated assembly on different transport facilities. 10 dwg