Terminology for rotating shaft with blades?

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SUMMARY

The discussion centers on the technical terminology for a cylindrical shaft that rotates in a fluid medium, equipped with radially-arranged blades that fold flat in one rotational direction and extend in the opposite direction. This mechanism resembles a one-way clutch and is likened to a feathering paddle wheel, commonly found on old steamships. The blades' unique movement creates a spiral galaxy appearance when viewed from either end, indicating a sophisticated design for fluid dynamics applications.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with mechanical engineering terminology
  • Knowledge of rotational mechanisms and clutches
  • Basic concepts of blade design in engineering
NEXT STEPS
  • Research the design and function of one-way clutches in mechanical systems
  • Explore fluid dynamics principles related to rotating blades
  • Learn about feathering paddle wheels and their applications in marine engineering
  • Investigate the mechanics of self-acting mechanisms in engineering
USEFUL FOR

Mechanical engineers, fluid dynamics specialists, and anyone involved in the design of rotating machinery or marine propulsion systems will benefit from this discussion.

Piffulus
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Technical terminology: what’s it called? A cylindrical shaft which rotates in a fluid medium and carries a set of radially-arranged blades (?splines) attached by hinges. The blades fold flat against the shaft when it rotates in one direction (say clockwise) but they sweep out automatically to resist rotation in the opposite direction (counterclockwise). Viewed from either end it would look like a spiral galaxy, rotating smoothly in one direction but not in the opposite direction.

No hard data (only hypothesis), but any help with terminology would be greatly appreciated!
 
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It sounds a bit like a one-way clutch.
Maybe the application gives it a name.
 
Feathering paddle wheel as found on old steamships . Can be self acting or have a driving mechanism .
 

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