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It is the dragonfly type ornithopter which had four pieces of wing.
A system of flapping is the same as Flaptter19.
An attack angle of ex-wing changed in order to control it.
This mechanism came out of talks with Mr. Ito of Nagoya who carried out research on a flight of a dragonfly.
| width | 67 | cm |
| length | 56 | cm |
| weight | 155 | g |
| battery Lipo 3cell 240mAh | 27 | g |
| Total flight weight | 182 | g |
| Dragonfly21-4 | |
| Receiver: | Corona 4Ch Single Conv. Rx 72MHz |
| cryistal: | Castle Creations Micro Crystal Berg (72MHz) |
| Servo: | Front wing (DM 4.7g servo *2) |
| Motor: | C2020 Micro brushless Outrunner 3500kv (11g) |
| Gear: | Main Gear 0.4M66T Acetal *4 (shaft3mm, 3mm ball bearing) Spur Gear M0.4 60T, 64P8TPinionWire(4mm ball bearing) Pinion Gear M0.4 18T (=64P18T) |
| ESC: | H-KING 10A Fixed Wing BrushlessESC |
| Battery: | Lipo 3cell 240mAh G3 |
| Control: | 3CH (a motor, front wing 2 servo) |
| Film of a wing | Orcon film |
| 3.0-1.7Carbon pipe & 2-2.5mm carbon rod, 1.2mm 1.6mm 2mm Carbon rod |
