翼竜型羽ばたき機　プテラノドン　SFOPteranodon131-3　New Wing 3: 4th Flight Test one rubber band
ゴムバンドを左右1本ずつで飛行。
推力がもう少し欲しい。まだ、周回ができない。
化石から分かっているデータに基づき、本物の翼竜の翼と同じように、翼を前進させ、Servoを傾けた（化石の状態からは羽ばたきの軸が少し傾いているとのこと）。翼の面積を増やすため胴体を5㎝延長。
Based on data known from fossils, they moved the wings forward and tilted Servo, just like real pterosaur wings (the axis of flapping is slightly tilted based on the fossil). The fuselage was extended by 5 cm to increase the area of the wings.
Pitchが不安定のため脚を5ｃｍ延長。
羽ばたき角度をつけているため、翼を振り上げた時に翼の後縁にゆるみが出る。
これにより、推力が落ちてしまう。
そこで、翼の膜の後縁をラバーバンドで引っ張るようにした。
これにより推力が少し向上した。
1輪のゴムバンドを2輪にして翼の後縁を引っ張る力を強くした-しかし、推力が上がらず。
1輪に戻すことで推力が改善した。
あまり緊張を強くしすぎても駄目なようだ。
Because the pitch was unstable, the legs were extended by 5cm.
Because the wing flaps at an angle, the trailing edge of the wing becomes loose when the wing is swung up.
This results in a reduction in thrust.
So I used a rubber band to pull the trailing edge of the wing membrane.
This improved the thrust a little.
By replacing the single rubber band with two rubber bands, the force pulling on the trailing edge of the wing was strengthened-but the thrust did not increase.
Reverting to one wheel improved thrust.
It is no good to make the pulling force too strong.
width 232 cm
length 69cm
weight 292 g
Lipo　450ｍAh2cell and 150mAh1cell 33ｇ
Total flight weight 325g
Receiver: Flysky FS-A8S ppm out
Servo: DEMAND DBS6084V 8.4V Stall Torque: 60 kg-cm by 8.4V 80g
Film of a wing Orcofilm EN158C and A36
Control: Servo Drive System by Arduino
Arduino pro mini
2cellLipo directly to servo
1cellLipo to Dc converter to 5V for RX and Arduino pro mini
I made new Servo flap system by Arduino with PPM RX
New Servo Flap System by K.Kakuta
1 Bilateral Servo Flap between Max high point and Max low point
- change max flap point (throttle stick) and change Flapping frequency(5chLS)
3 Change center of Flapping angle Horizontal (Ch1 aileron stick) and Vertical (Ch2 elevator stick)
4 Change flapping amplitude on each Servo (Ch4 rudder stick)
Increase flap amplitude of one servo and decrease flap amplitude of another servo
Setting : Set elevator and rudder and aileron stick Center-- 1500microsecond
Set 5Ch at Left Slider or other switch
Set throttle stick and 5CH at low max --1000 microsecond
Arduino Pro mini board
PPM Receiver-- RX PPM signal input to D2 pin
Servo right --D5 pin
Servo left --D6 pin
Ground -GND pin
5.0V -Raw pin　1cellLipo 3.7V to 5V by step up DC converter.
Arduino code is here: kakutaclinic.life.coocan.jp/SF...
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Ornithopter,羽ばたき機,鳥,ロボットバード,RC,Servo,Arduino
Pteranodon, Pterosaur, ornithopter, Articulated wings,　Single Finger Wing, プテラノドン, radio control, RC, SFO, ServoFlapOrnithopter, ServoDrive