Berg Propulsion CP Propeller Feathering Solution

Berg Propulsion have added a new dimension to controllable pitch propellers: an innovative hub mechanism that allows full feathering of the blades without any additional moving parts.
This guarantees our robust and highly reliable design
while providing a window of opportunities to increase the
operational flexibility of a multi screw vessel and decrease
its environmental footprint. In fact, there are a lot of fuel
savings to be targeted.

Category:

Science & Technology

Tags:

• Berg Propulsion
• controllable pitch propeller
• feathering
• Azimuth thruster
• Transverse Thruster
• Propulsor
• CPP
• CP Propeller.

[N1400M]

Never thought about feathering the prop on a ship... guess that could be helpful with the drag if one screw ever needs to be shut down. Cool Video

[lmogden1]

great video

[MrROTD]

haha I'm no engineer I'm just being silly, there is no need to feather the prop 90 degrees on a simple merchant vessel that I can think of either.

[funkgerat]

@MrROTD Yes, but that does not explain the feathering. Aircraft and sailboats feather propellers of stopped engines to reduce drag. Merchant ships use forward, astern and flat pitch, but why would it ever need to go to 90º pitch?

[MrROTD]

@funkgerat this has advantages for all kinds of ships. theres no need for reversing an engine or gearbox to move the ship in reverse just flip the blades around on the fly. its more efficient at all speeds and loads if you adjust the pitch for different conditions. a merchant ship could perhaps avoid an accident because of this you can reverse the thrust rapidly thus its safer.

[funkgerat]

This may be a stupid question, but when does a merchant ship ever need to feather its propeller?

[hangarrat101]

feathering propellers have been around in aircraft for 70 years now. its surprising its taken this long to bring them in in marine applications. still cool though :)

[hangarrat101]

feathering propellers have been around in aircraft for 70 years now. its surprising its taken this long to bring them in in marine applications.