Message posted by Smythers (Member since 01/10/2010) on November 19, 2022 at 18:09:49 PST:
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: YF-220 mistake in biography (deja vu YF-24) posted by Peter Merlin on November 19, 2022 at 10:52:35 PST:
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