ALVA Industries propulsion system

This repository contains data on X60 electric motor and ALTUS Duo system. This propulsion system is designed specifically for 25-kg octocopters with 12S batteries and 28” propellers and consists of X60 motors, VESC-based Alva ESCs and propellers developed in conjunction with Mejzlik Propellers s.r.o. The X60 motor consists of a slotless stator featuring Alva Industries’ patented FiberPrinted™ winding, and an inrunner Halbach PM rotor providing a mass- and energy-efficient solution. More details are available on the manufacturer’s website or datasheet [1,4].

The data collected here represent test results of a single- and dual-motor propulsion system based on X60 motors. Datasets with test results contain dependencies of thrust, torque, current, power, RPM and efficiency on the throttle for several propeller assemblies. Relations of the listed motor parameters on the throttle (thrust-throttle, current-throttle, etc.) are constructed as smooth curves for each test assembly. The specification for X60 is attached.

X60 Motor Properties

Motor type: Three-phase slotless BLDC inrunner

IP rating: IP-55

Design Life: 1000h

Winding connection: Wye

Stator/Rotor Poles: 34

Voltage Constant: 8.22 V/kRPM

Speed Constant(Kv): 121.6 rpm/V

Torque Constant: 95.5 mNm/ARMS

No-load speed: 5350 RPM

No-load current: 723 mARMS

Line-to-line Inductance: 9.23 μH

Line-to-line Resistance: 170.0 mΩ

P/N: 100400

Outer Diameter: 105 mm

Motor Mass (Excl. cables): 380 g

ALTUS Duo System Properties

MTOW – Octocopter: 25 kg

Continuous thrust: 9.6 kg

Peak thrust: 15.7 kg

Thrust ratio: 2.5

Throttle input: UAVCAN, PPM

Telemetry output: UAVCAN

Motor: 2 x X60-Kv120

Propeller: 2 x Alva-Mejzlik 28”

ESC: 2 x Alva ESC-12S

Nominal voltage: 44 V (12S)

Drone Arm Diameter: 30 mm

System mass: 1198 g

P/N: 100228

References

1)   https://www.alvaindustries.com/

2)   https://www.unmannedsystemstechnology.com/company/alva-industries/

3)   X60-Datasheet.pdf – https://www.unmannedsystemstechnology.com/wp-content/uploads/2021/12/X60-Datasheet.pdf

4)  ALTUS-Duo-Datasheet.pdf – https://www.unmannedsystemstechnology.com/wp-content/uploads/2021/12/ALTUS-Duo-Datasheet.pdf