The Savannah VG is our standard cabin STOL airplane. VG stands for "vortex generators" and there are fifty vgs on each wing. Vortex generators cause the air to swirl over the wing thereby increasing lift while lowering drag.
The original Savannah wing employed leading edge slats to obtain a short takeoff and low stall speed. However, slats produce lots of drag resulting in low cruise speed. Newer technology was needed. By removing the slats, extending the nose of the wing and adding vgs, our Savannah cruise speed was increased by almost ten miles per hour while maintaining the same STOL performance. We think it looks cleaner too!
Of course the secret to vgs is to place them in the optimum position on the nose skin. That's a tricky proposition if you have to use templates, a pencil and a drill. Luckily for our builders, we use a laser to cut two holes in the nose skin at precisely the right location. The vg has two studs on the backside which allow it to be snapped into the laser-cut holes. When you get the chance look down a VG wing. You'll see 100 perfectly aligned vortex generators. By the way, check out our rivet lines too. Whether you build or we do, you'll see every rivet line is perfect. That's because all our skins are pre-drilled to the full rivet size - not just pilot holes. The Savannah VG, built by you or us, is a beautifully engineered airplane.
The Savannah VG
Length: 21' 8"
Never exceed speed Vne: 125 mph
Maximum cruising speed Vno: 110 mph
Maximum structural speed Va: 85 mph
Cruising speed 75%: 95 mph
Stalling speed no flap: 30 mph
Stalling speed flaps at 40°: 22 mph
Rate of climb: 900 ft/min
Takeoff distance: 95 ft
Takeoff over 50 ft obstacle: 285 ft
Landing distance: 90 ft
Landing over 50 ft obstacle: 270 ft
Glide ratio no flaps @ 60 mph: 10:1
Range with reserve: 3.5 hr.
Performance figures are at gross weight with standard tires, at standard temperature and pressure and are general in nature.