Further information concerning Blended Wing Bodies (BWB) including the "Bristol 260 seat -design" can be found here,
http://ctn.cvut.cz/ap/download.php?id=147, at Page 34 Section 2 "The arrangement of flying wings and blended wing bodies"
The Bristol 260 seat design is also included in R Payne's book "Stuck on the Drawing Board.Unbuilt British Commercial Aircraft since 1945" published by Stroud, UK, Tempus, 2004.
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