NACA-TN-3346

Prediction of downwash behind swept-wing airplanes at subsonic speed

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T18:50:21Z
date available	2017-09-04T18:50:21Z
date copyright	01/01/1955
date issued	1955
identifier other	KUNUYDAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std/handle/yse/231786
description abstract	A rapid method for estimating the downwash behind swept-wing airplanes is presented. The basic assumption is that of a flat horizontal sheet of vortices trailing behind the wing. The integrations for the downwash are handled in a manner similar to both Multhopp's and Weissinger's approximate integrations in their span-loading calculations. The principal effects of rolling-up of the wake are treated as corrections to the flat-sheet wake. A simple approximate correction for the effect of the fuselage is applied. The agreement with available experimental data taken behind airplane models is good. Computing forms are included together with charts of pertinent functions, so as to enable simple direct application.
language	English
title	NACA-TN-3346	num
title	Prediction of downwash behind swept-wing airplanes at subsonic speed	en
type	standard
page	105
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1955
contenttype	fulltext