Hi everyone!
I'd like to share with you the latest development of our small team - a high-load hexacopter project.
The design is intended to be a compromise between price, power and efficiency. The frame made from locally-sourced square aluminium profiles, motors, props and ESC's ordered from Taobao store, batteries from HobbyKing.
Total weight is 20 kg, and according to the specs of the motors, the thrust should be around 60 Kg, meaning that it's theoretically possible to lift a 30 kg payload, although that hasn't been tested yet.
Specs:
motors: BD9340 100KV - super efficient motors!
ESC: Hobbywing X-Rotor Platinum 80A
batteries: 6x 12000mAh 6S 10-20C 22.2V Turnigy Multistar ( in 12S config., giving 36Ah)
propellers: 3065 CF
FC: Pixhawk
The tests that had been run so far:
A test with copter on a stand with 100% throttle on - lasted 22 minutes.
A flight without payload to 3 km distance - used around 25% of battery capacity.
A flight with a 10 kg payload to the distance of 1.5 km - used around 20% of battery capacity.
The last test gives us a probable total flight distance with a 10Kg payload of around 6 km.
Comments
Sure,
20 kg is the total gross takeoff weight including batteries with no payload.
The auto mode speed was set up to 15m/s, or 54km/h, and the 3km flight took around 3 minutes.
For the 100% throttle test, the draw can be calculated from the total Ah used, which is 36. That means that is was about 100A per hour. Although the current sensor during the flight showed values a bit larger, up to 150A.
Feel free to ask any other questions!
Hi! I have some questions if you don't mind.
Is 20 kg the total gross takeoff weight with no payload (including batteries)?
How fast did you fly the 1.5 and 3 km or how long did each one take?
For the 100% throttle test, do you know how much current you were drawing or how many mAh were used? Or how low the voltage dropped under load?
Thanks!
-
1
-
2
of 2 Next