Inhaltsverzeichnis
chAIR - Manned Multirotor Quadcopter
This page should document the published progress of Axel Borg, a Swedish engineer building his own DIY quadrocopter.
Demo Video on Youtube: https://www.youtube.com/watch?v=wDJC99mb0SU
Specs
- Flightcontrol: 5x KK 2.1 running stock 1.6 firmware
- Motors: 76x Multistar Elite 5010 274Kv
- Motor Controllers: 76x afro 20A HV 1)
- Batteries: 80x Multistar 4S 5.2Ah, 6.18kWh 4)
- Remote Controllers: 5x Turnigy TGY-i6S Digital Proportional Radio Control System
- Weight:
- Vehicle: 58kg excl. batteries
- Battery: 35kg
- Load: Tested with 93kg 5)
Construction
- Aluminum tubing 6063 T6
- Aluminum rod 6082 T6
- 4.5kN break kevlar rope for Chair
- Bridge nylon 3D printed parts
- Aluminum pop rivets
Battery
- 80 packs, each 5.2Ah, 4×3.7V
- 4 sub assemblies
- super plugs with 15 XT60 connectors, forced by a screw with bearring
- each pack is balanced individually
Charger
- 20x Turningy 35W balance chargers
- 2x Turningy 540W power supply
- 2×50-Pin D-Sub Connectors for each of the 4 Packs
Motors
- 274 rpm/V
- 28A
- 22-30V
- 630W
- 4mm shaft
Comment from axbor22 on Hobbyking:
Love this motor. I run them on 8S, 20A Afro HV controllers and a 18x 5.5 Quanum DJI style CF prop
- 1000g thrust at 9.8g/w
- 2000g around at 7.7g/W
- 4600g peak thrust (!) at 4.7g/W
with newly charged batteries, two 4S 8000mAh zippys in series. Amazing that the Afro 20A ESC seems to be able to withstand the 31A peak current draw. First time I found HobbyKing products to be underrated 
ESC - Motor Controller
- Current Draw: 20A Continuous
- Voltage Range: 3-8s Lipoly
- BEC: N/A OPTO
- Input Freq: 1KHz
- Firmware: afro_HV.hex
- Discharge wire/plugs: 16AWG/Male 3.5mm
- Motor wire/plugs: 17AWG/Female 3.5mm
- Weight: 28g (Included wire, plug, heat shrink)
- Size: 65x27x11mm (with capacitor)
Dynamics
Tilted Motors
The motors are tilted by 6° to get a better handling, see video part 18.
Redundancy
My assumption:
Electrically the whole thing is split into 5 more or less equal quadrocopters
- 5 remote controlls, potentiometers on a DIY 3D-Printed Joystick, mechanically couppled
- 5 RC receivers
- 5 Flight controllers
- 76 Motors: Each of the 4 „super rotors“ has 19 Motors, where 4 flight controllers controll 4 motors, and 1 flight controller controlls 3 motors.
Videos
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