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Mini Talon iNav 1.9

By Peter Burke, 25 Apr 2018 into Mini Talon in Fixed Wing Watch on YouTube »

This is a long video because I’m trying to get good numbers for flight time, etc.

I upgraded the motor to Cobra C-2221/16 940Kv Brushless Motor based on Mark Q. advice on the RCGroup forums. My AUW is heavy for this airframe (over 1700 g) based on what others are getting, and Mark recommended a larger motor for this weight.

I am a bit disappointed, I was expected cruise throttle of 2-3 A and a flight time of an hour. But seems it needed a lot more to stay in the air (at least that is what iNav thought in altitude hold mode), so the projected flight time is only 25 minutes with a 4S 5200 mAh battery.

The hard landing at the end was not a stall. It was pilot error. I switched to manual control on the final turn for landing (no wing leveling) and did not have enough experience flying in this mode.


In the air:

Airframe: Mini Talon
CG = 55 mm behind leading edge of main wing
FC: Omnibus F4 V2 Flight Controller STM32 F405 MCU Integrated OSD Built-in 5V BEC Current Meter (iNav 1.9RC2)
PWR: UBEC 5V/3A x2
RX: FrSky L9R Receiver
GPS: Ublox NEO-M8N Flight Controller GPS with Protective Shell for PIX PX4 Pixhawk
1080 p camera: Mobius Mini
FPV Camera: RunCam Micro Swift 2 600TVL 2.1mm/2.3mm FOV 160/145 Degree 1/3'' CCD FPV Camera
VTX: Eachine TX801 5.8G 72CH 0.01mW 5mW 25mW 50mW 100mW 200mW 400mW 600mW Switched AV VTX FPV Transmitter
ESC: Hobbywing Flyfun 40A V5 Brushless ESC
Prop: Aeronaut CAM Folding Propellers (Rudi Freudenthaler)Motor: Cobra C-2221/16 940Kv Brushless Motor
Battery: Multistar High Capacity 5200mAh 3S 10C Multi-Rotor Lipo Pack
Steerable landing nose gear: Nose Landing Gear for Freewing Stinger 64mm EPO RC Plane FJ10411
Various Mark Qvale designed 3d printed parts
For telemetry: HC-12 Wireless Transceiver (433 MHz)

AUW over 1700 g.

On the ground:
TX: Taranis
Video Display: AOMWAY FPV 7" LCD Screen Monitor 32CH 5.8G Wireless Receiver DVR

For telemetry:
HC-12 Wireless Transceiver (433 MHz) to HC-06 Bluetooth Transceiver.
(Design as per this link:
Android app “Mission Planner” connects via Bluetooth for mission planning.

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