REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

testing of standard models in the large-subsonic wind-tunnel facility of VTI

Goran Ocokoljić

Military Technical Institute, Belgrade, Serbia,  ocokoljic.goran@gmail.com

Dijana Damljanović

Military Technical Institute, Belgrade, Serbia,  didamlj@gmail.com

Boško Rašuo

Faculty of Mechanical Engineering, University of Belgrade, Serbia,  brasuo@mas.bg.ac.rs

Jovan Isaković

Tehnikum Taurunum – College of Applied Engineering Studies, Belgrade, Serbia, jisakovic@tehnikum.edu.rs

Đorđe Vuković

Military Technical Institute , Belgrade, Serbia, vdjole@sbb.rs

Abstract: Tests of standard models serve to confirm the overall accuracy and repeatability of measurements in a wind-tunnel facility, and to confirm confidence in test results, by comparing obtained data with those from other well-known wind-tunnel facilities. They are convenient for checking the effects of modifications to wind-tunnel structure and for testing new instrumentation. To these ends, the Military Technical Institute (VTI) in Belgrade has adopted the policy of periodically testing a number of standard models in its wind-tunnels. In this paper the configurations and sample test results of two standard models, ONERA M model (hypothetical transport aircraft configuration) and AGARD-B model (a generic delta-wing airplane configuration) used in the large-subsonic test facility of VTI are presented. Inter-facility correlations of the test results were done to certify the reliability of the most-used VTI’s subsonic test facility. Standard test-data are also recognized as essential in providing potential customers with a documented assessment of the wind-tunnel calibration.

Keywords: wind-tunnel, subsonic flow, standard models, aerodynamic characteristics, inter-facility correlations,