Angle of Attack
What is the Angle of Attack?
Angle of Attack is the angle between the chord of the element and the relative wind.
The best efficiency of the propeller is obtained at an angle of attack around 2 to 4 degrees. As the propeller spins around the crankshaft, the speed of the prop blades is fastest at the tip and slowest at the root. During one full rotation, the tip of the blade has to travel a much further distance than the blade root, all in the same amount of time. That's why the blade angle is greatest at the root, and the least at the tip.
By "twisting" the blade, you get an approximately equal angle of attack across the entire propeller blade. If the blade angle was equal across the prop, thrust and pressure would have wide variations from root to tip. There could be a negative angle of attack at the root, and blade stall at the tip. This is why differing blade angle plays such a crucial role, to prevent a large angle-of-attack and pressure differences across the blade.
If your company needs high-quality custom propellers made by professionals, call R2 Quality Castings today for a quote.
Custom Propellers Built For Your Industry
From the blade root to the tip, precision casting is critical for performance effeciency in any industry. Quality Castings manufactures durable propellers, mixers, and aerators for several industries. From water treatment mixers to soil cultivator components, we supply any type of propeller your industry requires.
Our propellers serve the following industries:
- Industrial mixing
- Agricultural equipment
- Food preparation
- Aeration propellers
- Marine propellers
- Wastewater treatment
In addition to our propeller casting, product finishing, and polishing capabilities, R2 Quality Castings possesses a wide selection of propeller molds and patterns well suited for many different applications. Our master precision investment casters can also utilize our parts design and manufacturing services if we don’t have the propeller mold or pattern you’re looking for.
Some of the propeller blade we regularly cast include:
- 3-Blade MP Style
- 2-Blade Weedless
- 3-Blade Weedless
- Custom
Whether your company or production facility is in need of tough mixing propellers or custom cast propellers for demanding industrial applications, depend on the precision investment casting professionals at R2 Quality Castings.
We carry propellers in stock and partner with the distributors McMaster & Grainger.
