spanwise vortices and induced drag
spanwise vortices and induced drag
(OP)
What are spanwise vortices (I've seen the term used in a few places but never defined) and how do they relate to induced drag?
In this explanation of induced drag: http:// selair.sel kirk.bc.ca /aerodynam ics1/Drag/ Page6.html
what causes the 'flow circulation' in the 6th picture?
Thanks
In this explanation of induced drag: http://
what causes the 'flow circulation' in the 6th picture?
Thanks





RE: spanwise vortices and induced drag
Mike Halloran
Pembroke Pines, FL, USA
RE: spanwise vortices and induced drag
Induced drag is significant only at low flight speeds. These wing tip vortices can also be clearly seen on the rear wings of F1 cars while they are zooming down the straights.
Cheers.
RE: spanwise vortices and induced drag
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: spanwise vortices and induced drag
I am assuming that the view you are referring to, is also the front view of the aircraft. In that case, I dont see how there will be any pressure difference as the cross-section of the wing is circular.
RE: spanwise vortices and induced drag
TheRaptor, The wing that Greg is talking about is an annular ring, with a normal arerofoil cross-section wrapped round - sort of like bending both wings so far that the tips touch tangentally above the fuselage.
Don't know quite how the aero works on this, but apparently a paper aeroplane made in this style is very effective, sugesting that it is not traditional cambered-wing aerodynamics that is at work.
RE: spanwise vortices and induced drag
Thanks for the info mate.
Greg,
Sorry pal. But never heard of such a design before.
RE: spanwise vortices and induced drag
Link to one below, can't get at the best one 'cos of the internet useage policy here...
http: