牽引式滑翔機空中發射系統 Towed-Glider Air Launch System (TGALS)
https://www.universetoday.com/158471/nasas-new-glider-could-turn-any-airport-into-a-spaceport/https://youtu.be/0hEnYyykaL8牽引式滑翔機空中發射系統是NASA設計的兩級空中發射可重複使用的發射系統，目前由NASA的阿姆斯特朗飛行研究中心（Armstrong Flight Research Center）開發。該系統使用滑翔機，牽引飛機和火箭，旨在將小型衛星送入軌道。滑翔機和牽引飛機都是可重複使用的。
Towed-Glider Air Launch System (TGALS), uses three very different stages – a business jet, and glider, and two separate rockets – sort of. But its main advantage means that any airport large enough to host a business jet could also become a spaceport.
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