Calum E. Douglasさんのイラストまとめ

Very few people do bonkers aircraft as well as the Italians (I think the French have given them a very close 2nd place in this endeavour.).

Piaggio P.7, complete with hydroplanes and rear mounted aquatic propeller to get the main engine and nose clear of the water !

Archives are not just for historians, engineers can improve their technical skills by learning from Engineering greats - Yes this is 75 years old but I`m a better designer for having read it. Frank Whittles #WW2 papers are available @UkNatArchives under the AVIA-28 series.