QueSST의 엔진이 원래 F404였는데 F414로 바뀌었네요.
9톤의 기체를 5만5천피트에서 마하 1.4 슈퍼크루즈 가능.
https://www.flightglobal.com/news/articles/lockheed-and-nasa-move-toward-design-review-for-sup-435437/
Lockheed’s characterisation of the low-boom supersonic demonstrator appears lighter than NASA’s earlier descriptions, which sketch a 25,000lb prototype. Lockheed and NASA will demonstrate a 9% scale model plane, weighing about 20,000lb and 90-feet long, in a high speed wind tunnel at NASA’s Glenn Research Center. The X-plane, powered by an existing GE F414 engine, will fly at Mach 1.4 at 55,000 feet, Chase says.