More features of the B-21 Raider is yet to be revealed. The upcoming B-21 Raider and the B-2 Spirit share a family resemblance; nonetheless, there will be significant differences between the two bombers in terms of size, and probably the number of engines and payload as well. Importantly, the B-21 will also be significantly more advanced than its older stablemate in terms of low-observable technology, which will put it at least two generations ahead of its predecessor.
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