[Franek Grabowski]

Well, I have to agree with Juha and respectfully dissagree with his opponents. Indeed it is a fact most of aviation authors lack any technical knowledge. Of course it is not that much necessary in unit or general histories, nonetheless even in those fields ignorance leads to terrifying results. See a myth of superior diving speed (due to weight) of Thunderbolt for example - it is bouncing back all the time, although it is a pure nonsense. In the other words I cannot imagine a good monography of an aircraft being not written by or consulted with an engineer. Claim that it is not interesting is childish, it is very interesting but not for you. That is all.