Patent ID: 6503058
Filing Date: 2003-01-07
Classification: F03D,F05B,Y02E,Y10S

Abstract:
An airfoil cross-section on a blade for a power wind turbine, the blade having a hub, an outer tip and an inboard chord length at the hub, an outboard chord length at the tip and intermediate chord lengths therebetween ranging from 0% to 100% as measured from the hub, and a thickness that is measured as the ratio between the thickness and the chord length at a specific chord location, the airfoil comprising:a. a thickness-to-chord ratio in the range of 14% to 45% at approximately the 30% chord; b. a design lift coefficient in the range of 1.10-1.25; c. a design Reynolds number in the range of 3 million to 8 million; and d. a 45% thick airfoil including a trailing edge thickness in the approximate range of 1.2% to 9%.