Zenair 601HDS Demoflight with Vortex Generators

[johnNYgoesLA]

No it wouldnt, in fact it reduces drag(at least it doeas on a mitsubishi lancer evo)

But thats not the point, VGs on an aircraft makes flying much safer if you fly with nominal stall speeds, you get reserves. with VGS you can turn faster, and in case of engine trouble it takes longer until stall, so you have more time to react...

sorry im not quite the pilot, nor am i the english speaker but i hope it helps

[LTF85199]

What is the use of it? -to get lower stall speed?

[johnNYgoesLA]

@LTF85199 yes, about 10 percent,

[LTF85199]

@johnNYgoesLA wouldn't it also mean higher drag at cruising speed?

[johnNYgoesLA]

@LTF85199

on this page, a swiss guy(like me) shares his experiences with VGs, some points:

-the nose is 2-3° lower ->better sight

-no differene in fuelcomsumption

-better stability @ all speeds, especially at very high speeds, the aircraft is infact easier to control

-aircraft remains controllable durning stall

-he showed it to many pilots and all of theme were enthused!

[johnNYgoesLA]

@LTF85199 sorry i cant post the link but heres another intressting one:

its better actually, + its in english!

stolseeddotcom

[johnNYgoesLA]

@LTF85199 sorry i meant

stolspeed . com

[lazflyn]

How do you know where to place them on the the leading edge? Is it a different place for different airfoils? That last part with 100% VGs was very convincing with such a high angle of attack!

[mybigbrother55]

I bet you;re going to see alot more of those used in the future,wonder what the drag penalty is?

[featherstonekid]

Wow! convincing demonstration of vortex generators. Wish it had sound, though.