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NACA-TR-695

Determination of ground effect from tests of a glider in towed flight

contributor authorNASA - National Aeronautics and Space Administration (NASA)
date accessioned2017-09-04T17:41:07Z
date available2017-09-04T17:41:07Z
date copyright01/01/1940
date issued1940
identifier otherDWWUYDAAAAAAAAAA.pdf
identifier urihttp://yse.yabesh.ir/std/handle/yse/164049
description abstractReport presents the results of an investigation made to find the effect of ground on the aerodynamic characteristics of a Franklin PS-2 glider. The lift, the drag, and the angle of attack of the glider in towed flight were determined at several heights from 0.14 to 1.19 span lengths and at various speeds for each height. Two wing arrangements were tested: the plain wing, and the wing with a nearly full-span 30-percent-chord split flap deflected 45 degrees. The experimental results for the plain wing were in good agreement with theoretical values calculated by the method of Wieselsberger for both the angle of attack and the drag coefficient at a height of 0.21 span length; Tani's refinements of the theory had a practically negligible effect on the computed values in this case.
languageEnglish
titleNACA-TR-695num
titleDetermination of ground effect from tests of a glider in towed flighten
typestandard
page13
statusActive
treeNASA - National Aeronautics and Space Administration (NASA):;1940
contenttypefulltext
subject keywordsAERODYNAMIC
subject keywordsAERODYNAMICS
subject keywordsANGLE
subject keywordsATTACK
subject keywordsBODIES
subject keywordsCHARACTERISTICS
subject keywordsCOEFFICIENTS
subject keywordsDRAG
subject keywordsEFFECT
subject keywordsFLAPS
subject keywordsGLIDERS
subject keywordsGROUND
subject keywordsLIFT
subject keywordsSPLIT
subject keywordsTESTS
subject keywordsTOWED
subject keywordsWING
subject keywordsWINGS


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