80% Scaled NASA Common Research Model Wind Tunnel Test of JAXA at Relatively Low Reynolds Number

A wind tunnel test of a 80% scaled copy of the NASA Common Research Model (CRM) was performed in the 2m × 2m transonic wind tunnel of Japan Aerospace Exploration Agency (JAXA). The wind tunnel model was fabricated by JAXA consulting NASA Langley Research Center and the Drag Prediction Workshop committee members. The test was conducted at relatively low Reynolds number of 2.27 × 10 due to the limitation of the tunnel capability and boundary layer transition was simulated with optimized roughness. In the test campaign, static pressure distribution and aerodynamic forces were successfully acquired while the model main wings were deformed during the test due to the dynamic pressure. To make a fair comparison with the data from other sources in different circumstances, data normalization techniques were applied. Then, the data was compared with the data of the National Transonic Facility of NASA and CFD. The data normalization successfully realized fair comparisons for pressure distribution and lift coefficients while the tests were performed at the different circumstances such as the different Reynolds numbers.