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|Mike White and his Dominator (click image to enlarge & get more information).||The Dominator 44 during the building process (click image to enlarge & get more information).|
To my mind there is no point in building a fighter type model if it is to be flown around like a trainer. No sir, no way!! My usual power loading for this type is around 125 watts per pound of model which gives sprightly performance, although this model has a rather better power loading.
The motor chosen for this model was the EMP B3650/06. This is an inrunner with a Kv of 2,300, rated for a maximum of just over 1,000 watts. The motor is intended for use with 3S-5S lipo batteries. In this model, the motor is supplied with a 3S 4,000mah 30C battery.
When turning an 8x6 APC i/c (gas) prop, the motor draws around 59 Amps, for a power consumption of around 725 watts. The ESC is an 80 amp opto unit. This is housed in one of the side ducts, which also provides it with adequate cooling. The battery is cooled by air entering via a NACA duct under the nose. The warmed air leaves the model on the underside near the finger launching holes.
The battery is fixed to a 3mm liteply base by a Velcro strip and another
on the ply base. As `belt and braces` another Velcro strip goes around
the base and is fixed to the top of the battery.
|The Dominator features a twin tail.||With a colour scheme like this, there's no mistaking which way up the model is!|
The RC gear is all powered by a 1,000mAh hydride battery. Control is throttle, aileron and elevator.
For belly landing models I like to use metal geared servos. I’ve used TowerPro 90MG servos for this model, one for each surface. So far, no servos have suffered stripped gears.
The finish is doped tissue, a little filler and Humbrol enamel paint brushed on.
Finding the best balance position was a little worrying at first on all of these models. In the end it was achieved by using the formula for finding the balance of a delta wing, plus a little bit added forward for the long nose and side wings, plus a little bit added aft for the tail area plus a little bit more added forward for mum; just to be on the safe side………very scientific!
|Another shot of the good-looking Dominator.||The Dominator's intakes.|
Up until now, the model has always been bungee launched. However one day, when the wind is up a little and I have some more flying experience with it I may get someone to do a hand launch for me. This should be no problem, really, as there is so much thrust available at full throttle the model should get away well.
The model has a thin, fast wing. The leading edge has a small radius, so this means the stall has to be carefully avoided especially during the approach and in low speed flight. To this end some down flap is mixed with low throttle position which, after some trial (and happily no errors) has proved helpful.
|Dominator receiver bay.||Dominator witing patiently for its next mission.|
The total effective wing area is 680 square inches and the flying weight is 4lb 3oz. This results in a wing loading of a very acceptable 16 ounces/sq.ft. The power loading is 180 watts/pound.
You can see the other models which lead up to the Dominator 42 here.
|Dominator technical data|
|Span||1,120 mm||44 inches|
|Length||000 mm||00 inches|
||0.00 sq m||3.47 sq ft (500 sq in)|
|Flying Weight||0,000g||4lb 3oz (67oz)|
|Wing Loading||00g/dm||16 oz/sq ft|
|Flight Battery||3S 4,000 mAh LiPo|
|Motor||EMP B3650/06 (Kv 2,300)|
|Prop||7x6, approx 18,000 rpm|
|Max Power||59A / 725 Watts|
|Power Loading||000 W/kg||Approx 180 W/lb|
|Control functions||Elevator, ailerons & throttle. 1,000mAh 4-cell NiMH receiver battery|
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