An airfoil for a turbine engine includes pressure and suction sides extending in a radial direction from a 0% span position at an inner flow path location to a 100% span position at an airfoil tip. The airfoil has a relationship between an axial leading edge location and a span position that is at least a third order polynomial with a generally U-shaped curve having an initial negative slope followed by a positive slope. The positive slope leans aftward and the negative slope leans forward. The curve has a critical point in the range of 30-50% span position at which the curve changes from the negative slope to the positive slope. The curve is generally linear from 55% span to 75% span and has a positive slope that increases at a rate of about 0.0875 inch (2.22 mm) per 1% span, +/- 0.04 inch (1.01 mm) per 1% span.
申请公布号
EP3108105(A1)
申请公布日期
2016.12.28
申请号
EP20140883503
申请日期
2014.08.22
申请人
United Technologies Corporation
发明人
GALLAGHER, Edward J.;MONZON, Byron R.;LIU, Ling;LI, Linda S.;WHITLOW, Darryl;FORD, Barry M.