1944•NASA STI Repository (National Aeronautics and Space Administration)Open access

The effects of roughness at high Reynolds numbers on the lift and drag characteristics of three thick airfoils

Harold R Turner

Abstract

Abstract : Three 22% thick airfoils were tested at Reynolds Numbers 6 to 26 X 10 6th power with roughness strips on the surfaces. Roughened airfoils showed favorable scale effects over entire range tested. Drag coefficients. Maximum lift coefficients of NACA airfoils tested were not affected by roughness strip at 20 to 30% of chord behind leading edge. Lift/draft ratio indicates superiority of NACA 63 (420)-422 airfoil and inferiority of Davis airfoil

Open-access reader

About this research paper

What this paper is about

Why it matters

OpenAlex reports 5 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Airfoil, Reynolds number, Drag, NACA airfoil, Chord (peer-to-peer), Lift-to-drag ratio, Lift (data mining), Mechanics