Cascade Wing Designs?

[OM]

...A NACA Langley clip of a Cascade Wing design:

http://www.youtube.com/watch?v=TTXd0Rakii8

...Anyone have any more details on this one and/or have any better luck with the search engine finding same?

 

[Grey Havoc]

Interesting.

 

[Stargazer]

A NACA photo of the same:

 

[Stargazer]

And the Beechcraft PD.159-1-1 Cascade project, which used the same lift principles:

http://www.secretprojects.co.uk/forum/index.php/topic,12266.0

 

[Stargazer]

The earliest multiple-wing "Venitian blind" design I have found is this "Super-Safe Aircraft" of 1931 by T. A. E. Lake: