Anyone know a thing about propellers?

  • Thread starter jakksincorpse
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    Propellers
In summary, propellers work by converting engine motion into thrust through angled blades, and can be made of materials such as aluminum, stainless steel, and carbon fiber. They are designed using computer software based on various factors, and can be either fixed-pitch or variable-pitch. Regular maintenance and proper repairs are important for optimal performance and longevity.
  • #1
jakksincorpse
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at what diameter, pitch, and blade number would be the best combination for a high speed propeller? i'd like the diameter to be under 8 foot in diameter.
 
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  • #2
I have heard that if they start breaking the speed of sound then you lose power. I'd copy a prop design that already exists.

There's lots of info about this. Have you read any of this?

http://www.google.com/search?q=propeller+design
 

1. How do propellers work?

Propellers work by converting the rotational motion of an engine into thrust, which is a force that propels an object forward. The blades of the propeller are angled to create a difference in air pressure, causing air to flow from the front to the back, and thus creating forward motion.

2. What materials are used to make propellers?

Propellers can be made of various materials, but the most common ones are aluminum, stainless steel, and composite materials such as carbon fiber. The choice of material depends on the intended use, as each material has its own advantages and disadvantages in terms of strength, weight, and cost.

3. How are propellers sized and designed?

The size and design of a propeller depend on several factors, including the engine power, the type of aircraft or vessel, and the desired performance. Propellers are usually designed using computer software that takes into account aerodynamic principles and performance requirements to achieve the optimal shape and size.

4. What is the difference between a fixed-pitch and a variable-pitch propeller?

A fixed-pitch propeller has blades that are fixed in place and cannot be adjusted during operation. On the other hand, a variable-pitch propeller has blades that can be adjusted to change the angle of attack, allowing for better performance in different flight conditions. Variable-pitch propellers are often used in aircraft with piston engines, while fixed-pitch propellers are commonly used in smaller boats.

5. How do I maintain and repair propellers?

Regular maintenance is crucial for the proper functioning of propellers. This includes inspecting for any damage or wear, cleaning, and lubricating. When it comes to repairs, it is recommended to consult a professional as propellers can be complex and require specialized tools and techniques. It is important to follow manufacturer instructions and guidelines for proper maintenance and repair.

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