Spratt Early Controlwing Flying Boat

[hesham]

Hi,

here is an early design to George Spratt Controlwing flying boat in 1945.

http://archive.aviationweek.com/issue/19451217#!&pid=20

 

[hesham]

Hi,

https://books.google.com.eg/books?i...oAhWQGBQKHaHFAL4Q6AEIMDAB#v=onepage&q&f=false