FIELD: shipbuilding; marine propellers. SUBSTANCE: proposed contra-propeller has inner sections of turbine-shaped blades for forming torque by incoming flow from propeller coaxial with it and outer sections for obtaining additional stop. Contra-propeller is freely fitted on axle mounted on end face of propeller hub. Hub of contra-propeller is pressed to thrust surface of propeller hub through friction ring for transmission of additional torque from propeller due to sliding friction; said friction ring is located between hubs; transmission of torque is effected by means of fairing and elastic (rubber for example) bush; fairing is locked by means of locking screw. EFFECT: increased tolerance for machining and wear of blades; enhanced reliability of contra-propeller. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| REVOLVING CONTRA-PROPELLER | 2005 |
|
RU2291812C1 |
| SHIPBOARD PROPELLER | 2001 |
|
RU2182098C1 |
| MARINE WAVE-DRIVEN PROPULSOR | 2012 |
|
RU2488518C1 |
| DISK-TYPE-FOILCRAFT | 2008 |
|
RU2371347C1 |
| PROPELLER WITH LAVAL NOZZLES | 2003 |
|
RU2249539C1 |
| PROPELLER | 1992 |
|
RU2043262C1 |
| METHOD OF IRROTATIONAL PROPELLER SCREW OPERATION AND MECHANISM OF PROPELLER FOR LIQUID MEDIA ON ITS BASIS | 2015 |
|
RU2614444C2 |
| SHIP PROPULSOR | 2009 |
|
RU2438917C2 |
| SCREW PROPELLER | 0 |
|
SU1106733A2 |
| 0 |
|
SU447323A1 |
