Found this... very interesting concept:
https://en.wikipedia.org/wiki/Meredith_effect
And the Meredith paper:
http://naca.central.cranfield.ac.uk/...rc/rm/1683.pdf
I've got some reading and thinking to do. Can this even be done on a bike? The P-51 Mustang example stated the Meredith Effect worked at 430 MPH duct speed.