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AVA Pro Flapped 3.2m Glider

Product Code: AVA-PRO-F
 (1 review)

Price: $982.62

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The Vladimir's Models AVA Pro-f is an improved version of the world renowned AVA-f. Probably no rudder-elevator glider has a better reputation and a more illustrious contest record than the AVA, so improving this already superb model is no mean feat. However Vladimir has incorporated these very significant upgrades in the flapped AVA Pro:
  • The thinner fuselage pod with a carefully engineered wing pylon reduces interference drag. The drooped nose eliminates skidding on landing, improving competition landing scores.
  • The AVA Pro wing planform has been optimised to be more elliptical, and the construction of the tip panels improved to utilise a carbon D-box to be stiffer and stronger. The better adherence to the airfoil profile also gives a useful drag reduction.
  • The flapped centre panel has been optimised to be lighter and stronger. The flap allows slower landings, improving accuracy and reducing landing stresses.
  • The AVA Pro's tailplane has an improved planform and carbon D-box construction, increasing strength and reducing trim drag.
  • The new fin has also been changed to use a molded fixed portion, with a lower drag tailboom attachment that incorporates a very clever quick release mechanism, to make the AVA Pro more transportable.
  • The fuselage pod has been totally redesigned to use a beautifully executed canopy hatch rather than a sheath nosecone, improving usability on the field.
  • The tailboom has been strengthened and stiffened.
  • Improved provision for up to 480g of ballast.
  • The adjustable tow hook allows the launch to be optimised, giving very high and fast straight launches. The rigid structure and low drag airfoils allow huge zooms, and the low wing loading ensures a very low min sink, and the ability to climb away in the weakest of thermals.

On the construction side, Vladimir has taken the build to a new level of completeness, so the AVA Pro-f can be assembled in only a few hours. New work done by Vladimir to speed AVA Pro final assembly:
  • All pushrods and horns have been fabricated, wires bent, etc.
  • Fitting the servos in the pod has been simplified with a custom molded servo mount that is removable for servo and battery fitting and maintenance.

The only work required to compete the model is to glue the boom to the pod, attach the fin quick release clip, optionally fix the ballast tube, and fit the tow hook & RC gear.

The AVA Pro-f is a stable thermal duration (TD) design suitable for near beginners and competition fliers alike, and the simple rudder, elevator, flap controls make it supremely easy to fly. Its light weight, prodigious strength, and state of the art design result in unequalled performance. Advanced fliers particularly like the wider speed range the flap allows.

For more info see the excellent AVA Pro build log on RCGroups.

The AVA Pro-f is an evolutionary improvement of the AVA, which was itself based on the revolutionary Drela Designed Bubble Dancer, but with the letterbox spoiler replaced with a flap, as preferred by European fliers. The AVA was an implementation of Mark Drela’s design using the free flight type construction techniques invented in Eastern Europe, and perfected by Vladimir. Like the Simply the Best and Organic ranges the AVA Pro-f wing has carbon capped ribs and a Kevlar D box. Allied to a substantial Kevlar wrapped carbon spar this results in a very rigid and almost unbreakable structure.

The aerodynamics are outstanding, utilising specially designed airfoils (no doubt in Xfoil, written by Mark Drela himself when he was a student), and a low drag V mounted tail plane, the AVA has a measured sink rate of 0.3m/s (60 ft per minute). The AVA Pro glider can be built down to 41oz, however despite the low wing loading the plane can cope with 15mph winds with ease.

Many have asked about the underslung fin. There is no need to worry, in all the years we have been selling the AVA and the AVA Pro not a single person has reported a broken fin or boom.

AVA Pro-f Specification
Wing span 3.175m 125 in
Wing area 67.9dm2 1052 sq in
Length 1.7m 67 in
Typical flying weight 1154g 40.8 oz
Wing loading 17.0g/dm2 5.6 oz/sq ft
EDA 13.4 degrees
Aspect ratio 14.8
Wing airfoil AG24/25/26
Tail airfoil HT14-HT15
Fin airfoil HT13-HT12
Centre of Gravity 100-108 mm from wing leading edge
Tow hook location 448 mm back from the nose
Controls Elevator, rudder, flap

AVA Pro-f Typical Weights
Fuselage 232g 8.2 oz
Wing 628g 22.2 oz
Hoz tail 25g 0.9 oz
Vert tail 39g 1.4 oz
Accessories 40g 1.4 oz
Total structure 964g 34.0 oz

Recommended Servos
Elevator & rudder MKS DS6100, Futaba S3150, HS85 MG, HS82 MG, Hyperion DS 11-* or DS12-*
Flap MKS DS6100, MKS DS6125 Mini, Hyperion DS12-*, Futaba S3150

Reviews 1  

 Review by:

What a beauty, almost completed build thanks to excellent build thread as shown.
Further excellent packaging, delivery and service from Hyperflight

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