These three (albeit somewhat long) videos answer a lot of the questions you asked: Flight of the New Concordes - https://www.youtube.com/watch?v=lZLykryZLFk ht

These three (albeit somewhat long) videos answer a lot of the questions you asked: Flight of the New Concordes - https://www.youtube.com/watch?v=lZLykryZLFk https://www.youtube.com/watch?v=lZLykryZLFk Supersonic Planes are Coming Back (And This Time, They Might Work) - https://www.youtube.com/watch?v=4p0fRlCHYyg https://www.youtube.com/watch?v=4p0fRlCHYyg Supersonic Flight - What Does The Future Hold? - https://www.youtube.com/watch?v=N3K04wgf_ZQ https://www.youtube.com/watch?v=N3K04wgf_ZQ