从风洞到太空：真空助力航空航天研究

Core Insights - The German Aerospace Center (DLR) in Göttingen is conducting research on fluid dynamics, which is crucial for accurately predicting the performance of supersonic aircraft [2][4] - The facility features a large vacuum chamber and a tube-based wind tunnel, which are essential for conducting detailed fundamental research [2][5] - Busch Vacuum Solutions plays a vital role in these research projects by providing vacuum technology that enhances testing efficiency and accuracy [6][8] Group 1: Research Facility and Technology - The Göttingen facility has been operational since the 1950s and was the first large aerodynamic research facility of its kind, known as the Ludwieg tube [3] - The tube-based wind tunnel operates on the interaction of pressure and vacuum, allowing for the simulation of hypersonic conditions [5] - The wind tunnel can achieve speeds of up to 7 Mach, with measurement times reaching 350-400 milliseconds, providing ample time for data collection and analysis [5] Group 2: Vacuum Technology Impact - The new Busch COBRA NX screw vacuum pump has doubled the speed of evacuating the vacuum chamber compared to the old rotary vane pump, reducing the time to reach 50 mbar pressure from 30 minutes to just 15 minutes [7] - The vacuum technology significantly improves testing efficiency and allows for better control of high-speed airflow [6][7] - The new vacuum system operates quietly and requires less maintenance, enhancing the overall testing environment [7] Group 3: Collaboration and Future Research - DLR collaborates with international organizations such as NASA and ESA, providing critical testing for spacecraft models under extreme conditions [8] - The research aims to build a key validation database to improve existing models and develop new numerical methods for fluid dynamics [8] - Busch Vacuum Solutions' technology is a crucial support for the mission of advancing aerospace research and development [8]