Heavy Fuel Engines
The Cubewano range of UAV engines has been developed from the
ground up to meet the demanding requirements of the world's
military and aerospace organisations. All engines are manufactured
to AS9100 quality standards, with full traceability to ensure
consistent quality levels and to meet aerospace requirements. These
are not modified model engines but professional units designed with
one requirement in mind: extremely high quality engines for
The engines have been designed from conception with the
- Multi-fuel compliant with ability to start and run perfectly on
heavy fuel (Kerosene, JP8).
- High power-to-weight ratio.
- Extremely low vibration.
- Full fly-by-wire engine management system to enable complete
bi-directional control via the vehicle management system.
- Altitude compensation to enable fault-free starting and running
up to at least 20,000 feet.
- A high quality product to meet the world's military and
- Compact form factor, especially suited to ducted fan
installations reducing impingement in fan area.
- Quiet running, meeting 56db at 500ft requirement.
- High fuel efficiency compared to other currently available
Due to the central form factor of the rotary engine, Cubewano
UAV engines are extremely suitable for loiter, one-trip UAVs where
tube launch is a requirement. This form factor also means there is
much less obstruction in ducted fan installations.
The engines offer both exceptionally low vibration and heavy fuel
capabilities to meet the demands of both commercial and military
Cubewano has utilised the latest material and manufacturing
technologies to push the boundaries of rotary engines. For example,
Cubewano developed ceramic tip seals and specialist coatings
to eliminate the tip wear associated with rotaries in the
Almost every component in the engine has been optimised, including
specialist imported steels for the major stress bearing components.
Coupled with the extensive use of the latest manufacturing
techniques, all this leads to a product that is far superior to
anything else on the market today.
Power options from 3.0hp to 16.0hp
Engines are offered in three basic size configurations:
Bobcat, Sonic and Reno.
All of the above series of engines can be optimised for weight for
a given specific power by varying the width of the rotor assembly,
providing the lowest possible weight for required power output.
Very Low Vibration:
Rotary engines are mathematically free of second order vibrations;
they are balanced to make them smooth. Cubewano has invested
heavily in equipment to balance the engines to a high level,
ensuring almost no vibration. They do not need to be isolation
mounted; bolting directly to the vehicle is the standard for
Cubewano engines. Torsional vibrations are also much lower: peak
torque is 4 times the average torque. This leads to much less
stress on the drivetrain and vehicle mounting, which allows the
elimination of image stabilising systems. The vehicle can be much
lighter and last much longer.
Small, compact form factor
Rotary engines have most of their mass very central to the output
shaft. This means minimal obstruction to airflow in any
configuration. It also means less obstruction in ducted fan
installations and gives a perfect form factor for any tube launched
Separate oil system
Cubewano engines have a separate oil system which ensures
that the vehicle is free of oil residue. The oil system
functions on a top up method meaning no oil changes are required -
simply maintain the oil level in the small oil tank.
Electronic engine management with Altitude
Cubewano, in collaboration with a race car ECU company, has
developed its own small, lightweight ECU, designed specifically for
Cubewano engines. This ECU is a full fly-by-wire system that takes
inputs from the VMS and sends all real time telemetry. Simply ask
for a desired RPM and the ECU does the rest, informing you of
actual RPM along with all other key measurements.
Cubewano chose to use manifold air temperature and pressure to
measure mass air flow to self-compensate for altitude - essentially
eliminating an operating ceiling. With a low altitude power lapse
rate of 18% per 10,000ft, Cubewano engines are able to operate at
elevated altitudes compared to anything else on the market.
The BobcatPower range of 3.0hp to
The SonicPower range of 6.0 to 11.0hp
The RenoPower range of 12.0 to
All engines are available as either air or liquid
For installations that require extended run times at peak power,
liquid-cooled variants of the engines were developed. This ensures
optimal cooling at extended power levels. For simplicity and ease
of installation, air-cooled engines would be the preferred choice
for fixed wing applications.
> LC Range for generators, land and sea
The LC range of engines are liquid cooled variants of
the tried and tested air-cooled engines. They utilise the same core
and control systems but are liquid-cooled for sustained use and
optimised for longer run times.
Power options from 3hp to 15hp
Single rotor, Liquid-cooled Wankel rotary type.
Very Low Vibration.
Small, compact form factor.
Separate oil system.
Electronic engine management.
Custom Design and Manufacturing Services [LINK to