Just spotted this:
http://www.unmannedsystemstechnology.com/2017/05/3w-international-announces-new-hybrid-engine-uavs/
Murry Rozansky.
“We wanted a high-quality, fuel consumption-optimized engine which
would demonstrate an outstanding power-to-weight ratio”, continued
Schudt. The 3W-180 SRE Hybrid has 180 ccm and as a short engine
weighs 6.8 kg. In the high power version, at 7500 rpm it delivers
38.5 hp (nominal power 28 hp at 6000 rpm). This results in a
power-to-weight ratio of 5.66 hp/kg, [5.66 HP/2.2 pounds or 2.6 HP
per pound.] with a fuel consumption of 340g/KW at full load."
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The Le Mans Mazda 4 rotor was 286g/KW. Much better . The TTC engine
is 3.25 HP per pound with out the gear box.
Paul Lamar
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"The engine can be fitted with an electric motor (starter
generator), increasing the total weight to 9.5 kg. The generator
also charges the super capacitors which turn the Wankel engine into
a hybrid drive. Super capacitors are well-suited to hybrid
applications in aviation due to their weight and fast charging and
discharging behaviour."
"The hybrid Wankel engine can feed 15KW, depending on the capacity
of the storage system, into the system for a time (for example,
30-60s). This additional power can be used when starting a helicopter
or for the acceleration of a fixed wing aircraft."
"The 3W-180 SRE Hybrid is equipped with two independent cooling
systems. A water cooling circuit undertakes the cooling of the
engine housing, while a second oil cooling circuit undertakes the
internal cooling of the piston. This is a fundamental prerequisite
for a drive system in aviation applications for which continuous
power is also a fundamental prerequisite. Here the thermal stability,
which gives added value to the 3W-180 SRE Hybrid, is of crucial
importance."
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Are you listening? you charge cooled or air cooled rotor Europeans.
:-)
Paul Lamar
How much would this little beauty cost?Id love to put one in a
motorbike frame
I have no idea. You need to contact them. Barry Dowse
BTW if enough people went into their local Mazda dealer and asked
them when is the new RX9 becoming available that would encourage
Mazda to introduce it.
Then we would have nearly free aluminum end housings.
Paul Lamar
I've heard these quotes at 40k or more
Bill Rayfield
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