NRJ 1.5m DLG F3K
The NRJ is a new DLG F3K competition model, built by OA Composites, (Anton Ovcharenko and his team), from Ukraine, designed by Christophe Bourdon from France.
Reaching the excellence in a DLG concept is for our actual times very difficult if one wants to be original and durable on this sensible market. Our goal was to put in the project all the best choices for aerodynamics, for handling, flight abilities using the actual best technology and building skills. There is more to discover yet, but for now, here is a bird that we are proud to present : The NRJ F3K Its characteristics are : 19 dm², Aspect ratio of 11.9 , 150mm root chord and an average chord of 130mm, which allows a good cruise speed and a a good L/D. The main difficulty about this type of design is to keep the wing performance at slow speed and High AOA. The wing has been developed specifically to address this issue. 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 ) .
Chris made the choice to keep good acceleration characteristics and the average momentum of wing reasonably low and smooth to give to the model an easy speed-changing and a global ease, very appreciated in uncertain flight situations. The good dyhedral allows small inputs on the radio sticks to keep the circle while thermalling , with the minimum drag. The special tip shapes are wanted to mark a different style during flight and to make the model more recognizable. Launch abilities are up in the modern ranking, our small 4 in nose thin fuselage will help in low drag and speed flight modes. The RTF weight would start from 190 gr for light version , giving the possibilities of great minimum sink rate flights, 210 gr for the standard version, (Textreme 60gr!!) and to something like 230 gr for the strongest layup. The NRJ is a very “hands off” flying aircraft, with excellent L/D, and exceptional stability at lower speeds.
The NRJ features a unique 3D printed "4 in the pod" servo mount that is included with each kit. Our NRJ come with servo trays for 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
Video By: Pierre Meunier