Message posted by noskcaJ (Member since 09/21/2022) on November 16, 2023 at 18:27:49 PST:
Heres a message from Smythers from November last year: "X-273 was the DARPA X-plane technology risk reduction / experimentation precursor, where as YF-220 was an NGAD full build ala YF-22/23"
In Reply to: Re: Secret X-Plane project posted by NotTelling on November 15, 2023 at 13:10:14 PST:
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