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Supra Pro Competition Glass

Product Code: SUPRA-PRO-G

Supra Pro Competition Glass

Supra Pro Competition Glass. This competition winning F3J model is a thermal duration soarer of the highest calibre. It was originally designed my Mark Drela, the world famous low speed aerodynamics professor at MIT and very gifted modeller, for bagged composite construction. However few modellers have the expertise or time to build the design, so Vladimir has made it available to all by using state of the art hollow moulded construction techniques. The CAD/CAM molds ensure the finished model has the exact wing and fuselage shape and totally accurate airfoils, and a superb surface finish.

The Supra Competition Pro sports all the design features that Drela’s models are world famous for, including a low pylon mounted wing, Drela designed custom airfoils, and a low drag V mounted tail plane. The upgraded Pro version has a drooped nose to reduce skidding on landing, allowing higher points when competition flying, and thisd latest Competition verson includes built up vertical and horizontal stabisers to reduce weight and intertia.

The glass version of this almost ready to fly glider can be assembled to a weight as low as 1600g, a brilliant figure for a large all molded model. The wing skin is a very rigid and tough glass/rohacell/kevlar sandwich with a substantial T800 carbon spar.

Supra Glass molded wing construction

The finessed design and the low weight allow the model to be an outstanding thermal soarer, that is particularly suited to weaker conditions common to the UK.

Advantages of the Supra Pro Competition's Built-Up Tail

1) The weight of the horizontal stabilizer is reduced by 7 grams, eliminating 15 grams of nose ballast.

2) The area of the horizontal stabilizer is increased by 7%, increasing stability, or allowing a more rearward CG, facilitating a further nose weight reduction.

3) Weight of the vertical stabilizer is reduced by 10 grams, eliminating 23 grams of nose ballast.

4) Stiffness and strength of the horizontal stabilizer is increased due to D-box and CF spar from T800 prepreg.

5) Improved accuracy of the tail airfoil due to new CAD/CAM built-up manufacturing process.

6) Reduction of weight at the extremities reduces the moment of inertia, increasing lift indication.

Immediately Apparent Flight Improvements

1) The Supra Competition reacts to the slightest of morning lifts and hot air bubbles.

2) Faster starts due to stiffer CF wing spar from T800 prepreg.

3) Improved control, especially apparent at low landing speed.

4) The Supra Competition reacts quickly to elevator input, if you dork the plane into the landing target.

Supra Competition kit has an assembled fuselage with a demountable vertical stabilizer, for easier transportation. The vertical stabilizer is fixed by a carbon pin. Please fix the pin in place with glued tape before flight.

The model is supplied with wing connection plugs and sockets and wiring harness for connecting up the wing servos.

Supra Pro Competition Glass Specification
Wing span 3400 mm 134 in
Wing area 69.3 dm2 1052 in2
Length 1700 mm 67 in
Typical flying weight 1630 g 57 oz
Wing loading 24 g/dm2 8.0 oz/sq ft
Wing airfoil AG40/AG41/AG42/AG43
Tailplane airfoil HT14/HT15
Fin airfoil HT13/HT12
Centre of Gravity 96-105 mm from wing leading edge
Controls Elevator, rudder, flaps, ailerons
EDA 2, 4, or 6 degrees - three sets of joiners supplied

Supra Pro Competition Glass Typical Weights
Fuse pod 200 g 7.2 oz
Boom+Pushrods 71 g 2.5 oz
Centre Sect 676 g 23.8 oz
Tip Panels 351 g 12.4 oz
Hoz tail 26 g 0.9 oz
Vert tail 32 g 1.1 oz
Accessories 105 g 3.7 oz
Total structure 1464 g 51.6 oz
Ballast capability 900 g 31.7 oz

Recommended Servos
Elevator & rudder MKS DS6100, MKS DS6125H, Hyperion DS11-AMB
Aileron KST DS135MG, MKS DS6125 Mini, MKS DS6100, Hyperion DS09-AMD
Flap KST DS125MG, KST DS135MG, Hyperion DS095-FMD, DS13-TMB, MKS DS6125 Mini, MKS DS6125

Supra Nomenclature - these are the various terms used to describe the different versions
Classic The original fatter pod, with a removable nose cone.
Pro The new longer, slimmer drooped pod - used on all glider Supras. Now suplied on most electric models. Only very small (Speed 400 size/25mm diameter) geared motors can be fitted.
Competition The model is fitted with a built-up tailplane (horizontal stabiliser) and rudder. This results in a slight reduction in tail weight, reducing the model's total weight and inertia.
Ulralite The wing has a reduced strength spar and glass wing skins - lightest, but suitable for low energy electric flight only.
Spread Carbon The SC (also called ST for Spread Tow) wing has a full strength F3J spar and spread carbon wing skins - very light and very strong.
Glass The wing has a full strength F3J spar and all glass wing skins - light.
Carbon/Glass The wing has a full strength F3J spar and carbon skins on the centre panel, and glass wing skins on the tip panel - medium weight.
Carbon The wing has a full strength F3J spar and all carbon wing skins - heavier, but very strong.

Read Jo Grini's Supra pages for building tips and flight reports.

Also check out this RCGroups consoilidated list of Supra threads.

Look at Mark Drela's Supra writeup on the Charles River site.

See the HTML Manual on Vladimir's site.

Thanks to Jo Grini and Tuomo for permission to use their excellent photos of their Supra F3J TD Drela designed, R/C thermal soarer gliders.

Dimensions:   3.4m (134") span

Supra Pro Competition Glass

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Price: $1,439.60
Out of stock