A method is proposed for generating the developed blade drawing for raked propellers. Unlike Holst’s Method1, which is valid only for propellers without rake, this method discusses the procedure for propellers with rake, where the propeller blade generator line is swept backwards from the perpendicular position at an angle known as the rake angle. The drawing obtained with this new method is compared with computer generated developed propeller blade drawings and real helical surfaces, and a reasonable match of the drawings is obtained. The propeller blade projected drawing is used in creating the blade pattern on a helical propeller face during mold construction and during finishing when the final blade shape is to be machined.
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Developed Blade Propeller Drawing for Raked Propellers
Paper presented at the SNAME 14th Propeller and Shafting Symposium, Norfolk, Virginia, USA, September 2015.
Paper Number: SNAME-PSS-2015-005
Published: September 15 2015
Rodgers, Paul. "Developed Blade Propeller Drawing for Raked Propellers." Paper presented at the SNAME 14th Propeller and Shafting Symposium, Norfolk, Virginia, USA, September 2015. doi: https://doi.org/10.5957/PSS-2015-005
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