THE TESTING RESEARCH FOR OPTIMIZING THE DESIGN OF TRANSONIC ADAPTIVE TEST SECTION

This paper discusses the wall interference distribution of testing 3-D models in rectangular test section and the suitable width/height ratio B/H of the test section for extending wall interference free area.Two wing-body models were tested in Northwestern Polytechnical University(NPU)2-D flexible wall adaptive wind tunnel with B/H=1.0,1.2 and 1.4.The two models were tested in Germany DLR high speed wind tunnel HKG too. The results shows that for testing aircraft models B/H=1.4 is suitable.