Half-Model Testing in the NLR High Speed Tunnel (Hst): Its Technique and Application

摘要

The half-model test technique based on a systematic comparison of half-model test results with the corresponding full-model data is evaluated. It is shown that the most important problems with this technique originate from half-model mounting and wall interference effects. 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. Applications of this technique, in which half-model test results are used on a relative basis, are presented.