FIELD: aviation.
SUBSTANCE: leading and trailing edges of propeller blade are formed by intersection of two parabolas or three parabolas contacting the circumference at acute angle on leading and trailing edges engageable with semi-circumference on leading and trailing edges. Provision is made for stabilizing plane in form of segment at initial value on fin tip smoothly decreasing from zero to 1/3 of length from origin of blade. Leading and trailing edges are rounded-off in shape.
EFFECT: increased lifting force.
3 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| AIRCRAFT | 2005 |
|
RU2307048C1 |
| HELICOPTER | 2006 |
|
RU2309873C1 |
| TURBOJET ENGINE | 2007 |
|
RU2367798C2 |
| HELICOPTER | 2006 |
|
RU2333867C2 |
| VANE-TYPE WIND-DRIVEN POWER PLANT | 2006 |
|
RU2309290C1 |
| AXIAL-BLOW BLOWER | 2007 |
|
RU2362911C2 |
| ROTOR MAST | 2007 |
|
RU2359862C2 |
| AIR PROPELLER | 2006 |
|
RU2318698C1 |
| FLAPPING-WING AIRCRAFT | 2006 |
|
RU2323129C2 |
| ROTOR WIND ELECTRIC ASSEMBLY | 2006 |
|
RU2325552C1 |
