Butterfly20

0:11:23

Butterfly20-5-2-2 : First Test Flight--Very Good Elegant Flight in Wind

0:14:52

Butterfly20-5-2 : Third Flight Test: Very Good Beautiful Flight

0:06:52

Butterfly20-5-3 : First Test Flight--Very Good Elegant Flight in Wind

0:10:34

Butterfly20-5-2 New Wing System : First Flight Test—Very Good Flight

0:01:33

Butterfly20-2 with Wing flapping amplitude change system : Flapping Test

0:05:25

Butterfly20-5-2 New Wing System : Very Good Beautiful Flight

0:03:06

Butterfly20-5-2 Flat Wing and V tail: Flight in Wind

0:04:23

Butterfly20-5-2 New Wing System : Flight with FPV View

0:05:30

Butterfly20-5-2 New Wing System Good Flight

0:06:46

Butterfly20-5-2 New Wing System : Very Good Elegant Flight at seaside in Wind

0:10:33

Butterfly20-5-2 New Wing System : Second Flight Test Good Flight

0:04:48

Butterfly20-5-2 Flat Wing and V tail: Flight at Oosato by Boy

0:02:37

Butterfly20-5-2 Flat Wing and V tail: Flight in Strong Wind at Oosato

0:05:36

Butterfly20-5-2 New Wing System : Very Good Elegant Flight

0:00:14

Silver Butterfly(20)

0:06:47

Butterfly20-5-2 Flat Wing and V tail: Good Elegant Flight

0:06:28

Butterfly20-5-2 New Wing System : Very Good Elegant Flight at seaside

0:07:17

Butterfly20-5 Prototype New Wing System : First Flight Test : Good Flight

0:07:18

Butterfly20-5 Protptype New Wing System : Second Beautiful Flight

0:09:27

Butterfly20 5 2 Flat Wing and V tail : Flight with Stabilizer at Oosato

0:04:48

Butterfly20-5-2 Flat Wing and V tail Flight at Oosato

0:08:50

Butterfly20-5-2 : Flight training of Boy Day 3　A simultaneous flight of Two Ornithopters

0:08:25

Butterfly20-5-5＆6 Flat Wing and V tail: Flight test with Stabilizer at Seaside

0:04:37

Butterfly20-5-2 Flat Wing and V tail: Flight at seaside