Alan Devon Ross

US Patent:

44313764, Feb 14, 1984

Filed:

Oct 27, 1980

Appl. No.:

6/200800

Inventors:

Joseph H. Lubenstein - West Hartford CT
Brian A. Robideau - Glastonbury CT
Alan K. Ross - Vernon CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B63H 126

US Classification:

416223A

Abstract:

A flow directing assembly 14 having an airfoil section or shape 28 of the type adapted for use in an axial flow gas turbine engine is disclosed. The cambered meanline MCL of the airfoil shape is formed of a front circular arc FA and a rear circular arc RA. A thickness distribution TD is applied to the meanline to form the convex suction surface 20 and the concave pressure surface 22. The airfoil section exhibits good aerodynamic performance as compared with an equivalent circular arc airfoil in a transonic flow field. A method for making the airfoil shape is disclosed. The method includes the steps of: forming a cambered meanline of two circular arcs; forming a thickness distribution about the conical chord line B. sub. t ; and applying thickness distribution to the cambered meanline such that a portion of the suction surface is stretched and a portion of the pressure surface is compressed.