HB-2 high-velocity correlation model at high angles of attack in supersonic wind tunnel tests

Abstract

Responding to a need for experimental data on a standard wind tunnel model at high angles of attack in the supersonic speed range, and in the absence of suitable reference data, a series of tests of two HB-2 standard models of different sizes was performed in the T-38 trisonic wind tunnel of Vojnotehnički Institut (VTI), in the Mach number range 1.5–4.0, at angles of attack up to +30°. Tests were performed at relatively high Reynolds numbers of 2.2 millions to 4.5 millions (based on model forebody diameter). Results were compared with available low angle of attack data from other facilities, and, as a good agreement was found, it was assumed that, by implication, the obtained high angle of attack results were valid as well. Therefore, the results can be used as a reference database for the HB-2 model at high angles of attack in the supersonic speed range, which was not available before. The results are presented in comparison with available reference data, but also contain data for some Mach numbers not given in other publications.