Thats not what I said… as you accelerate, the c of g will start to move aft, resulting in a nose up attitude, that coupled with the nose pitch up caused by airspeed over the wing (c of P moving forwards), requires a nose-down trim input of significant magnitude which only increases the faster you go….
How does the centre of gravity – the point at which you could consider the mass of the aircraft to be be centred – move? Unless the aircraft changes shape???
Look, I can spot different manufacturers of Sopwith Pups, but spits and seafires are a foreign land. Spit shaped plane and a ship – an easy mistake to make surely…
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