Accession Number : ADP003775

Title :   Half-Model Testing in the NLR High Speed Wind Tunnel HST: Its Technique and Application,

Corporate Author : NATIONAL AEROSPACE LAB AMSTERDAM (NETHERLANDS)

Personal Author(s) : Boersen,S. J. ; Elsenaar,A.

Report Date : FEB 1984

Pagination or Media Count : 15

Abstract : An evaluation is presented of the half-model test technique based on a systematic comparison of half-model test results with the corresponding full-model data. It is shown that the most important problems with this technique originate from half-model mounting and wall interference effects. At present, these effects can only be determined empirically using the full-model test results as a reference. It can then be shown that the pressure distribution on the wing and the off-design boundaries are well represented in the half-model tests. Some typical applications of this technique, in which half-model test results are used on a relative basis, are presented.

Descriptors :   *Wind tunnel tests, Walls, Interference, Wings, Jet engines, Pressure distribution, Wind tunnel models, Mounts, Test methods, Comparison, Buffeting, Reynolds number, Netherlands

Distribution Statement : APPROVED FOR PUBLIC RELEASE