More like .4 mach. Although I have been on the concord, it is at the museum down here.
My Dad worked for Vickers Armstrong (they made planes such as the Vickers Vimmy and others), which later became British Aircraft Corporation (they built VC10 and BAC111 etc) and later became part of British Aerospace (Concorde, Harrier etc).
He was the Head of Electrical and Electronic Design and Production. His brother (my Uncle) was Head of Hydraulics.
One summer, when school was out, he asked me if I wanted to go in one of the planes they were working on. He said it was going to "go up for a quick spin". Of course, I WANTED, oh boy I WANTED! He took me to his office at Weybridge and we went out on the runway (what was once Brooklands Racetrack). We got into a small propellor-driven plane. We went up and then landed a few miles further along (At Wisley Aerodrome, about 5 miles away).
There, we got into another small plane and then flew to another company airfield (Bristol, I think). I was having a wonderful day! !
At Bristol, we got into yet another plane. This one was strange. It had just a few strips of flooring to walk on and just a few seats bolted down. You could see loads of pipes and wires running everywhere. And the strangest things was the funny wings. They were curved! Most odd.
One of my Dad's mates came aboard (Brian Trubshaw, but everyone called him "Tubby"). He said "Gentlemen, today we're off for a spin, but I won't be looping the loop, as George here (My Dad) gets annoyed if I do that. But we
are going to take this lady up to maximum".
He then disappeared up the front, followed by my Dad (who was going to keep an eye on the monitoring equipment and also be the radio operator) and we all strapped ourselves in.
After a short while we taxied onto the runway and the plane took off. The noise was immense. We were all pushed back into our seats as the plane went up at a very steep angle. Even from high up, the ground seemed to be moving very fast.
After what seemed like a few minutes, Tubby announced, "If you look out the left, you'll see something you won't forget". He was right. THE PYRAMIDS!
My Dad later told me that we had been flying at more than
twice the speed of sound on that trip. That plane was of course Concord. They just don't make them like that any more.