Originally Posted by
KenV
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Even assuming someone goes to the huge expense of developing and producing a fighter with such capability (which seems highly unlikely), such an ability has very limited, if any, military utility.
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Absolutely agree. Lots of research were done from late 70's through early 90's in USA and SU/Russia on that subject based on real experience gained from the Shuttle and Buran programs, respectively, and their derivatives (smaller spaceplanes). Was involved in that "business" at that time. The conclusions were exactly as you put it.