Originally Posted by 00
as both the M.52 & X-1 went with straight wings.
- I would not read too much into that. Obviously the high transonics benefit from sweepback, but my understanding is that a straight wing is a good as (if not better than) a swept once well through the transonic regime, so depending on the target Mach for both, maybe the straight wing was a better option in terms of strength etc, as with the X-15? They certainly were not planned to 'cruise' in the high subsonics.