Benefits of Vortex Generators

It's truly fascinating how such small devices can have such a dramatic effect on the aerodynamics of any wing. They aren't just a 'fix' for a sub‑standard wing, they're an aerodynamic enhancement. 

Land easier with slower touch down speed

It’s landings gone wrong that bend all too many aircraft and embarrass too many pilots. VGs give better control to hold off to a slower touchdown speed. Verified stall reduction is usually 3–5 knots. Better low‑speed handling and control improves safety margin and will be clearly noticeable every time you land. It’s so much easier to do good landings in any aircraft with VGs! 

Improvements in low-speed handling with VGs are remarkable and can save you and your aircraft from damage.

• Much crisper and more positive aileron response
• Much less tendency to drop a wing in a slow turn
• Stall doesn’t 'break' it becomes a gentle and gradual 'mush'
• Recovery from mush is quicker and easier than recovery from a stall, just ease the stick and you're flying again

Tailwheel aircraft benefit with classic three‑pointers: slower touchdown speed reduces risk of bounce or ground loop.

Nose‑wheel aircraft can hold the nose high on touchdown and then gently lower it with full directional control.

Instal VGs under the horizontal stabilizer for more elevator control

Many aircraft lose elevator control at low landing speed, so you can’t hold the nose up for a controlled landing. VGs on the horizontal stabilizer can give more control and fix this. With slower landing speeds enabled by VGs on the main wing, the elevator may struggle to pull the increased angle of attack. Installing VGs under the horizontal stabilizer will give better elevator control. So in order to get the full benefit from VGs on the main wing you may need to install them also on the under-side of the horizontal stabilizer.

Add VGs to the vertical fin for improved rudder Authority

Adding VGs to the vertical fin to improve rudder authority has had mixed results. On some aircraft, the improvement has been dramatic. Some aircraft have undersized rudders, often sacrificed for cruise speed, but risky at slow speed on take-off or landing.

I can’t guarantee results but if your rudder feels marginal in slow flight, it’s certainly worth a try.