Re: Small steps...
Having auxiliary engines for takeoff and / or shutting down engines in the cruise has been done many times. Well, a few at least. Trident 3B, Nimrod, Convair B-36 come to mind.
Having auxiliary engines for takeoff and / or shutting down engines in the cruise has been done many times. Well, a few at least. Trident 3B, Nimrod, Convair B-36 come to mind.