FIELD: propellers, helicopter main rotors.
SUBSTANCE: proposed main rotor is made from blades of two-dimensional profile; these blades are provided with tip fences at rotor diameter. Tip fences of all blades are movable for smooth change of angle from 180° to 60° between working surfaces of blades and their tip fences, thus ensuring fixation of preset angle. Minimum height of end edge of each fence relative to working surface of each blade is equal to 0.1% of rotor diameter. Mobility of tip fences is obtained due to articulated joints. These articulated joints are driven by means of chain rods or flexible shafts located in cavities of blades.
EFFECT: possibility of forming augmented thrust with no increase of rotational speed of main rotor.
4 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROPELLER | 2005 |
|
RU2279992C1 |
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|
RU2229422C2 |
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RU2774200C1 |
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RU2506202C1 |
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RU2684337C2 |
