Abstract: lt is introduced that the virtual flight testing system built in the FD-1O wind tun-nel, and the test techniques was investigated for its validation. The purpose for this study is to pursue the principle and key techniques including combined roll bearing, fin actors and cable sup-port systems techniques. Wind tunnel tests are conducted to test the model rolling and yawing re-spond to the fin deflections. Thought wind tunnel tests. it has verified the feasible of virtual flight testing and some experience was accumulated, this, established the fundament for establis-hing test apparatus in the productive wind tunnels.