Interesting from that link that concorde could use in-flight reverse thrust to achieve an increased rate of descent. I wonder if this was regularly used, or on

Interesting from that link that concorde could use in-flight reverse thrust to achieve an increased rate of descent. I wonder if this was regularly used, or only so concorde could descend rapidly enough from cruise altitude if they lost cabin pressure? The oxygen masks aren't effective at cruise altitude, which is one reason the windows are so small - if one fails, they needed to descend quickly before cabin pressure was fully lost.