-----Message d'origine-----
De :
rotaryeng@earthlink.net [
mailto:rotaryeng@earthlink.net]
Envoyé : mercredi 17 mai 2017 16:18
À :
rotaryeng@earthlink.net
Objet : New small Wankel
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
3W-international seems to be a german company, so all the European
wankels are not charge or air cooled any more...
A 2 rotor and a 3 rotor (360 or 540 cc) would be great for European ARV
: MTOW limited to 300 kg for single seater and 450 kg for 2 seater.
DEJEAN Philippe
Maybe they are using some AIXRO parts.
Paul Lamar
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