Two-stage light gas gun (IMAGE) Southwest Research Institute Caption Southwest Research Institute’s two-stage light-gas gun simulates hypersonic flight conditions and allows researchers to image objects in hypersonic flight. It will be instrumental in the Institute’s efforts to design experiments that advance knowledge of hypersonic separation events. Credit SwRI Usage Restrictions Images/videos may be used by the media and the public for educational and informational purposes only License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.