S904 and S905 Airfoils: May 1998--January 1999

S904 and S905 Airfoils: May 1998--January 1999

National Wind Technology Center

Research output: NREL › Subcontract Report

Abstract

A family of natural-laminar-flow airfoils, the S904 and S905, for cooling-tower fans has been designed and analyzed theoretically. The two primary objectives of high maximum lift, relatively insensitive to roughness, and low profile drag have been achieved. The constraint on the lift a zero angle of attack has not been satisfied. The constraints on the pitching moment and the airfoil thicknesseshave essentially been satisfied. The airfoils should exhibit docile stalls.

Original language	American English
Number of pages	77
State	Published - 2005

Bibliographical note

Work performed by Airfoils, Inc., State College, Pennsylvania

NREL Publication Number

NREL/SR-500-36338

Keywords

airfoil design
airfoils
Pennsylvania State University
wind energy
wind turbine

Access to Document

https://www.nrel.gov/docs/fy05osti/36338.pdf

Cite this

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title = "S904 and S905 Airfoils: May 1998--January 1999",

abstract = "A family of natural-laminar-flow airfoils, the S904 and S905, for cooling-tower fans has been designed and analyzed theoretically. The two primary objectives of high maximum lift, relatively insensitive to roughness, and low profile drag have been achieved. The constraint on the lift a zero angle of attack has not been satisfied. The constraints on the pitching moment and the airfoil thicknesseshave essentially been satisfied. The airfoils should exhibit docile stalls.",

keywords = "airfoil design, airfoils, Pennsylvania State University, wind energy, wind turbine",

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note = "Work performed by Airfoils, Inc., State College, Pennsylvania",

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AU - NREL, null

N1 - Work performed by Airfoils, Inc., State College, Pennsylvania

PY - 2005

Y1 - 2005

N2 - A family of natural-laminar-flow airfoils, the S904 and S905, for cooling-tower fans has been designed and analyzed theoretically. The two primary objectives of high maximum lift, relatively insensitive to roughness, and low profile drag have been achieved. The constraint on the lift a zero angle of attack has not been satisfied. The constraints on the pitching moment and the airfoil thicknesseshave essentially been satisfied. The airfoils should exhibit docile stalls.

AB - A family of natural-laminar-flow airfoils, the S904 and S905, for cooling-tower fans has been designed and analyzed theoretically. The two primary objectives of high maximum lift, relatively insensitive to roughness, and low profile drag have been achieved. The constraint on the lift a zero angle of attack has not been satisfied. The constraints on the pitching moment and the airfoil thicknesseshave essentially been satisfied. The airfoils should exhibit docile stalls.

KW - airfoil design

KW - airfoils

KW - Pennsylvania State University

KW - wind energy

KW - wind turbine

M3 - Subcontract Report

ER -

S904 and S905 Airfoils: May 1998--January 1999

Abstract

Bibliographical note

NREL Publication Number

Keywords

Access to Document

Fingerprint

Cite this