1931 Lanier XL-4 Vacuplane - photos

[Altair]

1931 Lanier XL-4 Vacuplane.










Previously:

Eshelman Flying Flounder - photo and video
SNCASE SE. 100 fighter - photo
He 111Z Zwilling - photos

[Duke_of_URL]

Now we know where the Harrier got its start.

[Frank S]

And down the rabbit hole I went until I happened across this.
http://eaach1.org/Design/Comm4v1_FullR4.pdf
A long and very informative read

[mr herb]

Any idea where all the air that was sucked through the slats exited? Where did the suction come from? The prop blades (assuming normal rotation) will pull the aircraft, and create positive pressure.

It has some university logo on the side, so it would seem some intelligence was wasted (and also $$ )