Terminology for rotating shaft with blades?

In summary, the conversation discusses a cylindrical shaft with radially-arranged blades that can rotate in one direction but resist rotation in the opposite direction. It is compared to a spiral galaxy and is believed to be similar to a one-way clutch. It may also be called a "feathering paddle wheel" and can either be self-acting or have a driving mechanism. The terminology for this mechanism is not certain and any help would be appreciated.
  • #1
Piffulus
1
0
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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  • #2
It sounds a bit like a one-way clutch.
Maybe the application gives it a name.
 
  • #3
Feathering paddle wheel as found on old steamships . Can be self acting or have a driving mechanism .
 

1. What is the purpose of a rotating shaft with blades?

A rotating shaft with blades is typically used to transfer energy from one point to another, such as in a turbine or motor. The blades are designed to convert the rotational motion of the shaft into useful work, such as generating electricity or providing propulsion.

2. What are the different types of blades used in rotating shafts?

There are several types of blades used in rotating shafts, including propellers, impellers, fan blades, and turbine blades. These blades are designed with specific shapes and angles to optimize their performance for different applications.

3. How are blades attached to a rotating shaft?

Blades can be attached to a rotating shaft in several ways, depending on the specific design and application. Some common methods include bolting, welding, and press-fitting. The attachment method must be strong enough to withstand the forces and stresses generated during operation.

4. What is blade pitch and why is it important?

Blade pitch refers to the angle at which the blades are set relative to the rotating shaft. This angle affects the amount of energy that can be transferred and the efficiency of the blades. Adjusting the blade pitch can optimize the performance of the rotating shaft for different operating conditions.

5. How do you determine the lifespan of a rotating shaft with blades?

The lifespan of a rotating shaft with blades depends on several factors, including the materials used, the operating conditions, and the maintenance practices. Regular inspections and maintenance can help extend the lifespan of the shaft and blades, but eventually, they will need to be replaced due to wear and tear.

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