Comparison of force measurements in the HEG and T4 shock tunnels

摘要: The stress-wave force balance, which was developed in the T4 facility, tested HEG shock tunnel. This balance is able to measure forces sub-millisecond test times. In order obtain a direct comparison same model and were used both facilities. drag on sharp cone with 15 degree half angle investigated for different conditions covered range of 60 380 N total 50 105 HEG. measured compared theoretically predicted results found be within measurement accuracy about 10% T4. level somewhat higher at 12%. It concluded that also capable measuring similar