The NRJ is a new DLG F3K competition model built by OA Composites from Ukraine.Designed by Christophe Bourdon of France. 

NRJ 1.5m DLG F3K

The goal of the NRJ project was to make the best choices for aerodynamics, handling and flight abilities using the best fabrication and building technologies.

The NRJ F3K characteristics are as follows: 19 dm², Aspect ratio of 11.9 , 150mm root chord and an average chord of 130mm. This allows a good cruise speed and a a good L/D.  The wing has been developed specifically to optimize performance at slow speeds and High AOAs. The airfoil series is going from 6% to 5.2%, keeping a reasonable camber and a good elliptical lift management along the wingspan (without tip twisting ).

Good acceleration characteristics and the average momentum of the wing give to the model easy speed-changing characteristics which is critical in uncertain flight situations. The NRJ is a very “hands off” flying aircraft, with excellent L/D, and exceptional stability at lower speeds. The generous dihedral angle allows small inputs on the radio sticks to keep the circle tight while thermaling, with a minimum amount of drag. The special tip shapes mark a different style during flight and to make the model more recognizable.


The launch abilities are superb, with the thin fuselage giving very low drag in any flight modes.

The RTF weight starts from 190 gr for the light version, giving the possibilities of great minimum sink rate flights, and 210 gr for the standard version. (Textreme 60gr) 230 gr flying weight for the strongest layup.

The NRJ features a unique 3D printed "4 in the pod" servo mount that is included with each kit. The NRJ comes with servo trays for the MKS 75k.

Available layups are: 
Light-cw20 or cw30 spread tow
 - Standard-cw40 spread tow - Strong-cw60 or textreme 60

All models are solid cnc foam core wings and tails featuring - CASCELL® IH

A full RTF version is available with 4x KST X08 servos and accessory hardware installed, just add your receiver and go fly. Buy the RTF version here:

Give us a call or e-mail us with any ordering or technical questions, we'll be happy to help you make the right glider and equipment choices.

Video By: Pierre Meunier