The weather was rubbish, but we can always rely on Paul and Alan for some entertainment.
Even with a trimmer as powerful as that on the Puchacz, ‘Transonic Prentice’ can be relied on for some extra help.
“At transonic speeds, an aircraft can experience a shift rearwards in the center of pressure due to the buildup and movement of shockwaves. This causes a nose-down pitching moment called ‘Mach tuck’. Significant trim force may be needed to maintain equilibrium….”