One of the strongest impressions in both the Concorde and the Tu-144 was quite unexpected. The fuselages of both airplanes are fixed at an angle, akin to being in takeoff position (see photo). Inside the plane, however, you never feel such a tilt in real life because the flight attendants buckle passengers into their seats. Therefore, when inside, a strong cognitive dissonance arises. To some parts of the brain, the plane feels like it is standing horizontally, but your body falls sideways because the angle is indeed steep. It takes some time to get used to it. You forget after a minute, and then it throws you towards the tail of the airplane again.
Hi, I'm Rauf Aliev. 