FIELD: machine building.
SUBSTANCE: invention relates to propulsors for vertical takeoff and landing and can be used in devices for movement of gases or compressor stage. Fan consists of two sets of blades, coaxial rotating in opposite directions. First set, by dragging maximum possible mass of gas, imparts thereto axial, radial and tangential acceleration and directs gas in second set of blades. Second set of blades by braking radial and tangential components of gas velocity, redirects it to direction of movement, parallel to axis of rotation of fan, and imports to gas additional acceleration in axial direction.
EFFECT: higher efficiency of propulsor.
4 cl, 3 dwg
| Title | Year | Author | Number |
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