Manufacturing Technology 2021, 21(5):706-713 | DOI: 10.21062/mft.2021.070

Measuring propeller pitch based on photogrammetry and CAD

Tuong Nguyen Van ORCID...1, Truong Le Thanh ORCID...2, Naprstkova Natasa ORCID...3
1 Faculty of Mechanical Engineering, Nha Trang University. 02 Nguyen Dinh Chieu, Nha Trang, Vietnam
2 Faculty of Mechanical Engineering, Nha Trang University. 02 Nguyen Dinh Chieu, Nha Trang, Vietnam
3 Faculty of Mechanical Engineering, University of Jan Evangelista in Ústí nad Labem. Pasteurova 3334/7, 400 01 Usti nad Labem, Czech Republic

There are a number of methods for measuring propeller pitch but it could be a problem for many fishing boat builders who lack of professional equipment. This paper presents a method of propeller pitch measuring based on photogrammetry and CAD (Computer Aided Design). This method con-sists of three stages. At first, a series of photos of the propeller were taken by a smart phone. After that, these 2D images were processed by a photogrammetry software to create the 3D virtual model of the propeller. Finally, in CAD environment, the pitch at different radii of each blade of the 3D vir-tual model were measured. To validate the proposed method, several propellers for fishing boats were measured and the measuring results were compared to those archived by using an EDM (Electrical Discharge Machining) machine and by a highly skilled man with simple tools. The measurement results show that the proposed method could be acceptable for measuring pitches of propellers of fishing boats.

Keywords: CAD, Fishing boat, Measurement, Photogrammetry, Pitch, Propeller
Grants and funding:

The work of this paper is supported by Nha Trang University under project No. TR2020-13-04.

Received: March 15, 2021; Revised: April 26, 2021; Accepted: July 2, 2021; Prepublished online: October 21, 2021; Published: November 25, 2021  Show citation

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Van TN, Le Thanh T, Natasa N. Measuring propeller pitch based on photogrammetry and CAD. Manufacturing Technology. 2021;21(5):706-713. doi: 10.21062/mft.2021.070.
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