Mks RES Dart Flying Wing 2m

The RES Dart is a superb 2m flying wing that incorporates very advanced aerodynamics to provide astounding performance. The RES-Dart is unusually stable for a flying wing, has good thermal performance and a wide speed range. The model impresses with its balanced flight characteristics, the enormous performance potential and the extraordinary manoeuvrability (see following video). The large 2 piece spoilers enable steep descents, allowing safe exits from thermals and accurate landings. The wing is two part and the winglets can be detachable, making for a very transportable model. Like our other F3-RES models this is a high quality build-it-yourself kit constructed from hand selected CNC cut balsa and plywood

RES-Dart is a flying wing which complies with the German F3-RES regulations and can be used in these competitions – in fact it has been specially designed to be competitive in these events. The wing profile has been optimised to give a very high launch while at the same time being easy to build. The thickness of approx. 9.5% allows for a lightweight structure and provides good torsional strength. The contour of the profile is only curved in the region of the front Dbox. To the rear of this, similar to the AG35, planar facets prevent covering sag between the ribs and thus ensure an accurate section is maintained. The wing geometry and sweep have been practically tested and flown many times while optimising the model’s structure and aerodynamics. One important design goal was good launching. The flight test showed a smooth launch behaviour and very competitive launch heights. Thanks to its wing profile, low surface load and DSA winglets, the RES-Dart has extremely good-natured flying characteristics, which enable practiced pilots to crank up the RES-Dart into the tightest thermal turn and sometimes even get away from a hand launch.

The winglet mount incorporates a Druck-Sog-Ableitung (DSA) tube. DSA means pressure-suction discharge and improves the flow conditions in the wing-winglet transition area. This is a major cause of the very good-natured behaviour and the controllability in slow flight. The DSA tube was originally a light carbon fibre tube but this was decreed to exceed the limited amount of carbon fibre allowed in the German version of the F3-RES rules. Consequently the model is offered with a carbon or a plywood tube which is nearly as light and complies with all interpretations of the rules.

More info on this RCGroups thread. Also see this German build log for photos and info – use Google Translate.

Download the German manual from here. An excellent English translation is now available here, or see the More Details section below for a link to a Google English translation. The kit does not include a plan. Although this is initially off-putting a clever build jig is included and with some observation of the manual photos the construction process becomes clear.

RES-Dart Specifications
Wing span	1.9 m	76 in
Wing area	47.0 dm2	729 sq in
Flying weight from	496 g	17.5 oz
Wing loading	10.6 g/dm	3.5 oz/sq ft
Aspect ratio	7.8
Wing airfoil	Custom
Centre of Gravity	21 mm from wing centre trailing edge
Controls	Elevons, spoilers

RES-Dart Typical Weights
Structure	360 g	12.7 oz
Receiver	6 g	0.2 oz
Elevon servos	15 g	0.5 oz
Spoiler servos	15 g	0.5 oz
Battery	70 g	2.5 oz
Noseweight	30 g	1.1 oz
Flying weight	496 g	17.5 oz

Recommended RC
Elevon servos	Blue Bird BMS-101DMG, Blue Bird BMS-101HV, Blue Bird BMS-A10H
Spoiler servos (2)	Blue Bird BMS-A10H, KST X08,
Receiver	4+ channel rx to match your transmitter
Battery	Dream-Flight 300 mAh 4.8V NiMH, HyperFlight 750 mAh 4.8V NiMH, Dream-Flight 750 mAh 4.8V NiMH, 4 cell Eneloop 500-800 mAh NiMH