Ray Proudfoot Posted August 21, 2022 Share Posted August 21, 2022 I know that Concorde had to be subsonic around 55nm before landfall to avoid laying its sonic boom but could remain supersonic providing it was >20nm abeam land. This suggests there was a cone ahead and stretching to the sides of Concorde inside which it would have to be subsonic. But what distance would be required to keep supersonic with land at 30° off the 10 or 2 o’clock position? Is there a diagram showing the distances? This question concerns a flight from Lisbon to Manchester up the Irish Sea and whether I could remain supersonic until 55nm before LOMVO which is roughly half-way between Anglesey and Dublin. Quote Link to comment
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