FIELD: main rotors of passenger, assault and military helicopters. SUBSTANCE: end fence of each blade is flat; it forms angle of 91 to 115 deg. with leading edge of blade and angle of 90 to 135 deg. with working surface of blade; its height above working surface is 0.5 to 3.5% of main rotor diameter. EFFECT: enhanced efficiency of helicopter main rotor. 4 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HELICOPTER MAIN ROTOR | 2005 |
|
RU2277498C1 |
| AIRCRAFT PROPELLER | 2001 |
|
RU2204503C2 |
| PROPELLER FOR SURFACE AND UNDERWATER TRANSPORT | 2001 |
|
RU2222470C2 |
| PROPELLER MIXER FOR STIRRING OF LIQUID MEDIUMS | 2003 |
|
RU2253506C1 |
| PROPELLER | 2005 |
|
RU2279992C1 |
| PROPELLER | 2006 |
|
RU2313469C1 |
| PROPELLER WITH STEERING NOZZLE | 2006 |
|
RU2301761C1 |
| SHIP PROPULSOR | 2009 |
|
RU2438917C2 |
| HELICOPTER | 2006 |
|
RU2333867C2 |
| HELICOPTER | 2006 |
|
RU2309873C1 |
