FIELD: aircraft industry.
SUBSTANCE: proposed propeller contains blades whose leading and trailing edges are formed by two parabolas in contact with circumference. Profile of each blade is formed by intersection of two parabolas at acute angle on leading edge. Trailing edge is provided with stabilizing plane which service serves to decrease noises. Tip of blade of propeller is bent through angle of β≥45° to direct centrifugal flow to increase thrust. Tips of propeller blades are mechanically coupled through flat springs by ring to decrease free vibrations.
EFFECT: increased thrust, reduced noise.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROPELLER BLADE | 2004 |
|
RU2278058C2 |
| HELICOPTER | 2006 |
|
RU2333867C2 |
| FLAPPING-WING AIRCRAFT | 2006 |
|
RU2323129C2 |
| PROPELLER | 2006 |
|
RU2314968C1 |
| VANE-TYPE WIND-DRIVEN POWER PLANT | 2006 |
|
RU2309290C1 |
| TURBOJET ENGINE | 2007 |
|
RU2367798C2 |
| AIRCRAFT | 2005 |
|
RU2307048C1 |
| AXIAL-BLOW BLOWER | 2007 |
|
RU2362911C2 |
| HELICOPTER | 2006 |
|
RU2309873C1 |
| ROTOR MAST | 2007 |
|
RU2359862C2 |
