Propeller blade geometry design for wind turbine by using nurbs

넙스(nurbs)를 이용한 프로펠러 블레이드 형상 설계방법

Abstract

본 발명은 넙스를 이용한 프로펠러 블레이드 형상 설계방법에 관한 것으로, 구체적으로는 기본 설계데이터를 바탕으로 익형 형상 데이터를 생성함에 있어서, 기존에 비해 명확한 수학적 연산을 통해 정확한 익형의 형상 설계가 가능하도록 함과 동시에 기존에 비해 설계과정을 간소화할 수 있는 기술에 관한 것이다.
PURPOSE: A propeller blade shape design method using a non-uniform rational B-spline (NURBS) is provided to calculate the position of each calibration point by grafting an equation through a NURBS curve based on basic data, thereby easily clearly performing airfoil type expression of a blade. CONSTITUTION: Design data of a blade airfoil type is produced. A first parameter value of each point forming an airfoil type is produced according as the design data is grafted to a NURBS curve generation equation. The position of a calibration point of the each airfoil type is calculated by the operation of the corresponding first parameter value. The position of a final calibration point is calculated to a second parameter value after a second parameter value is produced through each calibration point position data. Curved surface data is produced according as the position of the final calibration is operated with a NURBS curve production equation.

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    CN-105500712-AApril 20, 2016浙江理工大学Three-degree-of-freedom three-dimensional printer and control method