Our Engines

v3

2.5 HP: Orbital Power ORB-20A

The Orbital Power ORB-20A Rotary engine, designed in 2013, has been developed from a clean sheet to run with multiple fuels including Gasoline, JP-8, JP-5 & Jet-A1 alongside the other engines in our engine suite.

Ultra light-weight, low vibration and high power density are the key properties of this engine.

Applications

  • Ideal replacement for electric motors in small UAV’s to extend mission.
  • Hybrid drive unit for 4hp electro mechanical propulsion systems
  • Portable generators up to 0.8kw
  • Aircraft APU’s up to 1kw

Design

  • Air cooled
  • High power to weight ratio
  • Very low vibration
  • Lightweight construction
  • Very quiet
  • Small, compact form factor

Technical Specifications:

  • Engine Type: Single Rotor Rotary, Air Cooled.
  • Rated Power: 2.3HP Max. 1.7HP Continuous.
  • Weight (Core Engine)*: 2kg/2.64 lbs with steel housing, 0.9kg/1.98lbs with aluminium housing
  • Fuel Consumption: Design Target:0.75lb/BHP/hr, Tested Capability to date:0.95lb/BHP/hr
  • Heavy Fuel Starting: 100W required for 10s in Standard Day Sea Level conditions
  • Start Load with Orbital Power Starter: 5s crank time, 14A at 28V
  • Oil System: Independent ECU managed system
  • Fuel / Ignition System: Electronic fuel injection with altitude compensation. Closed loop fuelling and automatic fly-by-wire throttle control via can-bus.
  • Durability: The Orb-20 engine has so far completed 100 hour of durability testing. The Orb-20 has been designed using the same core engine technology used across our engine suite, durability estimate will be 250 hours @ 75% Load Factor and 1500+ hours @ 60% Load Factor.
  • Vibration: Reciprocating = Zero, Torsional = 25% of equivalent piston engine.
  • Core Dimensions, (L X Diameter): (123mm x 98mm)/(4.84 x 3.85 inches).

*Core Engine weight does NOT include induction, exhaust, generator, starter.

5hp

5 HP: Orbital Power ORB-37A

The Orbital Power ORB-37A Rotary engine, designed in 2011, has been developed from a clean sheet to run with multiple fuels including Gasoline, JP-8, JP-5 & Jet-A1 alongside the other engines in our engine suite.

Ultra light-weight, low vibration and high power density are the key properties of this engine. Our liquid cooled development engine has exceeded 6BHP.

Applications

  • Air cooled-Small Fixed wing UAV’s
  • Liquid cooled-Small VTOL UAV’s (Future Option = ORB-37L)
  • Portable generators up to 1.5kw
  • Aircraft APU’s up to 2kw

Design

  • Air or liquid cooled
  • High power to weight ratio
  • Very low vibration
  • Lightweight construction
  • Quiet: easily silenced.
  • Small, compact form factor

Technical Specifications:

  • Engine Type: Single Rotor Rotary, Air Cooled.
  • Rated Power (JP-8 FUEL): Design Target: 5.0BHP, Max. Tested Capability to date: 5.8BHP
  • Core Engine Weight*: 1.75kg/3.85lbs
  • Fuel Consumption: Design Target:0.75lb/BHP/hr, Tested Capability to date:0.75lb/BHP/hr
  • Heavy Fuel Starting: 100W required for 30s in Standard Day Sea Level conditions
  • Start Load with Orbital Power Starter: 5s crank time, 30A peak at 28V
  • Oil System: Independent ECU managed system
  • Fuel / Ignition System: Electronic fuel injection with altitude compensation. Closed loop fuelling and automatic fly-by-wire throttle control via can-bus.
  • Durability: 300 hours Time Between Overhaul (TBO)@ 75% Load Factor, 1500+ hours TBO @ 60% Load Factor.
  • Vibration: Reciprocating = Zero, Torsional = 25% of equivalent piston engine.
  • Core Dimensions, (L X Diameter): (167mm x 140mm)/(6.57 X 5.51 Inches)

*Core Engine weight does NOT include induction, exhaust, generator, starter.

8.5

8.5HP: Orbital Power ORB-56 Rotary Engines (Air-cooled OR Liquid-Cooled)

The Orbital Power ORB-56 Rotary engine, designed in 2007, has been developed from a clean sheet to run with multiple fuels including Gasoline, JP-8, JP-5 & Jet-A1 alongside the other engines in our engine suite.

Ultra light-weight, low vibration and high power density are the key properties of this engine. Our liquid cooled wide rotor development engine has been tested up to 12BHP.

Applications

  • Air cooled – Fixed wing UAV’s (ORB56-A)
  • Liquid cooled – VTOL UAV’ (Future option – ORB56-L)
  • Portable generators up to 3k
  • Aircraft APU’s up to 4kw

Design

  • Air or liquid cooled
  • High power to weight ratio
  • Very low vibration
  • Lightweight construction
  • Quiet: easily silenced.
  • Small, compact form factor

Technical Specifications:

  • Engine Type: Single Rotor Rotary, Air Cooled or Liquid Cooled.
  • Rated Power (JP-8 Fuel): Design Target: 8.5BHP, Max. Tested Capability to date:10.5BHP
  • Core Engine Weight*: 2.4kg/4.8lbs
  • Fuel Consumption: Design Target:0.70lb/BHP/hr, Tested Capability to date:0.65lb/BHP/hr
  • Heavy Fuel Starting: 200W required for 35s in Standard Day Sea Level conditions
  • Start Load with Orbital Power Starter: 5s crank time, 40A peak at 28V
  • Oil System: Independent ECU managed system
  • Fuel / Ignition System: Electronic fuel injection with altitude compensation. Closed loop fuelling and automatic fly-by-wire throttle control via can-bus.
  • Durability: 300(air-cooled)/ 500 (liquid-cooled) hours TBO @ 75% Load Factor, 1500+ hours TBO @ 60% Load Factor
  • Vibration: Reciprocating = Zero, Torsional = 25% of equivalent piston engine.
  • Core Dimensions, (L X Diameter): (168mm x 160mm)/(6.61 X 6.29 Inches)

*Core Engine weight does NOT include induction, exhaust, generator, starter.

15-19hp

15-18HP: Orbital Power ORB-92L

The ORB-92L Rotary engine, designed in 2009, has been developed from a clean sheet to run with multiple fuels including Gasoline, JP-8, JP-5 & Jet-A1, alongside the other engines in our engine suite.

Ultra light-weight, low vibration and high power density are the key properties of this engine. Our lightweight liquid cooling solution is our prime offering for this engine, an air cooled version is under development.

This engine has been successfully running in UAVs performing 12 hour missions Since 2012.

Applications

  • Liquid cooled – VTOL UAV’s
  • Portable generators up to 8kW/KVA
  • Aircraft APU’s up to 8kW/KVA

Design

  • Liquid cooled
  • High power to weight ratio
  • Very low vibration
  • Lightweight construction
  • Quiet: easily silenced.
  • Small, compact form factor

Technical Specifications:

  • Engine Type: Single Rotor Rotary, Liquid Cooled.
  • Rated Power (JP-8 Fuel): Design Target:15BHP, Tested Capability to date:18 BHP
  • Core Engine Weight*: 3.5kg/7.7lbs (3.0kg/7.2lbs to special order)
  • Fuel Consumption: Design Target:0.7lb/BHP/hr, Tested Capability to date:0.6lb/BHP/hr
  • Heavy Fuel Starting: 200W required for 40s in Standard Day Sea Level conditions
  • Engine Cranking For Start: 5s crank time, 60A peak at 28V
  • Oil System: Independent ECU managed system
  • Fuel / Ignition System: Electronic fuel injection with altitude compensation. Closed loop fuelling and automatic fly-by-wire throttle control via can-bus.
  • Durability: 400 hours Time Between Overhaul (TBO) @ 75% Load Factor,1500+ hours Time Between Overhaul (TBO) @ 60% Load Factor.
  • Vibration: Reciprocating = Zero, Torsional = 25% of equivalent piston engine.
  • Core Dimensions, (L X Diameter): (200mm x 160mm)/(7.87 x 6.29 inches)

*Core Engine weight does NOT include induction, exhaust, generator, starter.

200l

40HP: Orbital Power ORB-200L

Designed in 2014 for the 10kVA (plus) Portable Power Generation Market and the Automotive Range Extender Market.

This engine has several patented design innovations which keep the engine cool and efficient. Designed to run on multiple fuels including Gasoline, JP-8, JP-5 & Jet-A1, alongside the other engines in our engine suite.

We believe that this is the highest power density, heavy fuel rotary engine in the World.

Applications

  • UAV’s
  • Portable generators up to 20kw
  • Aircraft APU’s up to 25kw
  • Automotive Range Extenders

Design

  • Liquid cooled
  • High power to weight ratio
  • Very low vibration
  • Lightweight construction
  • Quiet: Easily silenced.
  • Small, compact form factor
  • Closed loop oil system
  • Integrated thermal management
  • Quiet running technology

Technical Specifications:

  • Single rotor,Liquid Cooled
  • Power: 40HP+
  • Core Engine Weight*: 10.5kg/23.1lbs
  • Closed loop oil system
  • Fuel system: Electronic fuel injection
  • Ignition system: via ECU
  • Fly by wire bi-direction system control
  • Durability: 500 hours Time Between Overhaul (TBO) @ 75% Load Factor
  • • Core Dimensions 101.6mm x 203.2mm/ 4inches wide x 8inches diameter

*Core Engine weight does NOT include induction, exhaust, generator, starter.