The 250W Power Management Unit (PMU) provides on-board electrical power generation, battery management and power distribution for small to medium-sized UAVs.

If you have an alternator on your gas engine, connect it to this PMU for stable DC power and to keep the battery charged. If your alternator is not producing power, this unit supplies the aircraft with power from the connected battery.

250 W Power Management Unit Features

• Multiple independent, individually programmable power outputs:
  • Avionics: 12 – 21 VDC, 7.5 Amps (120W max)
  • Payload: 12 – 21 VDC, 7.5 Amps (120W max)
  • Servo: 5 – 12 VDC, 10 Amps (120W max)
• Outputs are battery-backed and switchable (on/off) via hardware signal or remotely via command.
• Dual (redundant) battery support. The PMU includes two independent and identical battery chargers. Supported battery types include
  • LiPo: 5S, 6S
• • LiS: 7S, 8S, 9S, 10S
  • LiFe: 5S, 6S, 7S
• Industry-standard 28 VDC output (available during power generation and when the PMU is connected to umbilical power).
• RS232 and CAN control and monitoring interface provides extensive monitoring and reporting of voltages, currents, battery charge status, temperature.
• Weight: 290g (10.2 oz)
• Dimensions: 124.4 x 85.0 x 32.5mm

PMU Product Brief

PMU Manual

About Millswood Engineering

Millswood Engineering is a small electrical & electronic engineering company located in Adelaide, South Australia.

Their mission is to make innovative and meticulously engineered products, principally for the Unmanned Aircraft System (UAS) market. To date they have focused their efforts on UAV power and safety systems. All Millswood Engineering products are designed and tested in Australia.

DA 35/70 Air Filter designed for the DA 35/70 EFI system.

These serve as replacement filters.

Additionally, these filters are ideal for switching from the compact version to the standard EFI velocity stack.

DA 35/70 Air Filter Specifications

Height – 2.41in/61.42mm

Diameter – 2.28in/57.91mm

Weight – 0.875oz/26g

About HFE International

HFE International develops and manufactures high end propulsion systems for UAV’s, drones, unmanned systems, and ground support equipment. These propulsion systems include fuel-injection and rotary systems with gasoline and multi/heavy fuel operation.

Founded in 2010, the company’s aim was to address the growing demand for reliable, small engines at an affordable price point. With over 1,000 units sold – at 25% the cost of the closest competitor – HFE engines are in use throughout the world including use by the US Armed Forces.

Currawong Engineering’s Velocity Electronic Speed Controller (ESC) provides high power and high reliability brushless motor control for UAV power systems.

With peak output power in excess of 20kW, the Velocity ESC supports extreme heavy-lift applications. High voltage operation reduces current losses and allows larger motors to operate more efficiently.

This product fulfils the pressing need for an aerospace grade electronic speed controller (ESC) for use with 3-phase brushless DC motors.

The Velocity ESC is well proven, having been integrated on almost every Tier-1 US heavy-lift multi-rotor platform.

Currawong has engineered a robust device with a high level of documentation, testing, and traceability.

Key Features

• High power density and sustained power output
• Isolated CAN interface
• Telemetry interface reports RPM, current, voltage, temperature and ESC system status
• Reduced cooling requirements
• Extremely high ripple current capacity
• Designed for high temperature, high vibration environments
• Lightweight anodized enclosure
• Sensor-less starting for reliable VTOL transition
• Hall sensor support for high torque applications
• Automatic safety features
• And more…

Data Sheet

ESC Product Brochure

About Currawong Engineering

Currawong Engineering designs and manufactures small UAV engine powertrain systems. They are a world leader in the field, in both military and commercial applications.

Currawong provides contract design and manufacturing of mechanical and electronics products, and are well known for providing innovative solutions across a wide range of industries and applications.