🚀 go-pugleaf

01crmeyer@leo.bsuvc.bsu.edu (Craig Meyer) writes:
>Lift is produced by the resulting static-pressure difference between the top of
>the wing (with the driven air flowing over it) and the bottom of the wing,
>where the air is still.

>Thrust is produced, too, becuase the air is being blown BACK, (action-reaction,
>ya know).

>Once you got going, you could retract the duct into the leading edge of the
>wing, and blow the air out some ducts in the very back, for thrust only (since
>you'll be getting lift naturally becuase you're moving)

>Please tell me whatever you think about it (if I'm a genius, an idiot, a
>plagariser, whatever..)

This concept was tried on the Ball Brothers JetWing about 20 years ago
as I recall. Ralph Kimberlin at the University of Tennesse Space
Institute flew it, and it was no joy to fly. The airplane was very
heavy due to the metal ducting to handle the hot exhaust gases 
distributed over the wings, and the handling characteristics varied
greatly, since the lift and pitching moment were thrust-dependent.
It was also interesting to land, since both lift and thrust were
lost simultaneously when power was reduced. There is a reason why
the sky is not filled with airplanes blowing hot air over the wings.

 

--------------------------------------------------------------------------
|      Philip Bridges                 |  "Strive for design simplicity:  |
|      Dept. of Aerospace Eng.        |   you never have to fix anything |
|      Miss. State University         |   you leave out."                |
|      (601) 325-3623                 |                                  |
|      pdb1@ra.msstate.edu            |           Bill Lear (1903-1978)  |
--------------------------------------------------------------------------