Centrifugal Force load caused from propeller rotation

In summary, the conversation is discussing the force created by two propeller blades rotating at 2000 rpm. The total diameter of the prop is 72 inches and each blade weighs 4 lbs. The purpose of this information is to mill a Clark-Y profile with a length 4 inches shorter than the blade for a bolted connection to the hub. The milled bar will be twisted after milling to adjust the pitch, using shims at the hub-blade connection. The yield strength for the bolted connection will be based on the centrifugal force of the rotating blades. The force will depend on the mass distribution from the center to the tip of the blade, and the section of the blade is the same 4 inches from the center
  • #1
hovercraft57
8
0
Is anyone interested in telling me the force created from 2 propeller blades rotating 2000 rpm.The total diameter of the prop is 72 inches and the weight of 1 blade is 4 lbs.
Reason for the question is I want to mill a clark-y profile the length of the blade less ,4 inches for a bolted connection to the hub. The milled bar with the profile is to get twisted after milling to get the pitch.Using shims at the hub blade connection to increase/decrease pitch angle for final setting.
I'm going with the idea the bolted connection yield strength would be based on the centrifugal force of the rotating blades.
Help would be most appreciated,ED
 
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  • #2
The force will depend a lot on the mass distribution from the center to the tip. You will have to specify that. Clark Y only tells the cross section profile of the blade at each section. I don't think that matters.
 
  • #3
the section of the blade is the same 4 inches from the centre to the tip. The lbs/inch is .1111/1 inch of the aluminum flat bar used for a blade. there are 2 blades. I thought not using the weight /inch of the clark -y section would give a ssafety margin. Thanks ED
 

1. What is centrifugal force load caused from propeller rotation?

Centrifugal force load caused from propeller rotation is the force exerted on an object as a result of its circular motion around an axis, in this case the propeller. This force is directed away from the center of rotation and is caused by the inertia of the object.

2. How does centrifugal force load affect propellers?

Centrifugal force load can cause significant stress and strain on propellers, as it creates a pulling force on the blades. This can result in issues such as blade bending, fatigue, and eventual failure if not properly managed.

3. What factors contribute to the magnitude of centrifugal force load on propellers?

The magnitude of centrifugal force load on propellers is influenced by several factors, including the rotational speed of the propeller, the mass of the propeller blades, and the distance from the center of rotation to the blades.

4. How can centrifugal force load be reduced on propellers?

There are several ways to reduce centrifugal force load on propellers, such as using lightweight materials for the propeller blades, reducing the rotational speed of the propeller, and increasing the distance between the blades and the center of rotation.

5. Are there any safety concerns related to centrifugal force load on propellers?

Yes, there can be safety concerns related to centrifugal force load on propellers, as it can cause structural damage and potential failure of the propeller. It is important for engineers and designers to consider and properly manage centrifugal force load in order to ensure the safe operation of propellers.

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