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05-16-2014, 09:33 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Diesel V8
Saw this on AOPA this morning.
http://www.aopa.org/News-and-Video/A...d=140516epilot
And the engine itself--------at least as far as the info goes, they are kinda secretive.....
http://eps.aero/the-eps-engine/
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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05-16-2014, 11:32 AM
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Forum Peruser
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Join Date: Jan 2005
Location: Austinville, Alabama
Posts: 2,455
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Couldn't help but notice that when the words for posterity were spoken, in typical Dick Rutan style, his mouth was pointed the other way. 
Hope it becomes commercial reality, but I can't get too excited. I'm hoping for about 15 years of flying before I "hang it up." For some reason, I'm thinking it may take that long to make this a commercial success. We'll see. I do wish them the best in their venture.
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Don Hull
RV-7 Wings
KDCU Pryor Field
Pilots'n Paws Pilot
N79599/ADS-B In and Out...and I like it!
?Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard
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05-16-2014, 11:32 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Interesting! It looks like they have a good solid design.(pun intended) It will be interesting to see how the internals looks when they are revealed. Hints of heavy, but the engine+fuel mission will tell the story. It is good to hear the efficiency is good as V8's can suffer from turbocharger overall efficiency due to uneven firing from each bank. A single plane crank overcomes that, but generates a hefty lateral secondary vibration. Always a tradeoff. From appearances, they are quite knowledgeable design guys, so they would certainly be aware of these challenges.
I know that one Conti would generate power at bsfc of .330#/hp-hr on av-gas, so 50% better than that is not possible. They obviously have a different baseline.
The only issue might be their dependance on FAA tests as being sufficient for engine and component validation. FAA tests are pretty weak for full engine validation.
This is rather exciting, I hope they succeed!
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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05-16-2014, 12:03 PM
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Join Date: Feb 2011
Location: USA
Posts: 3,179
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A couple interested bits of data ...
"350HP is 75% power"
"4.4 litre flat-vee"
"with all the stuff it needs weighs 670lbs"
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05-16-2014, 12:23 PM
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Join Date: Nov 2005
Location: San Francisco, CA
Posts: 525
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Cool. i think i saw that cirrus at the last Mojave fly-in. it wasn't on public display, but i just peeked into the hangar through a small window.  the guys were busy working to talk but glad to see they are succeeding to do cool stuff out in the desert.
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#40533 RV-10 Builder and CFI
1/2006 Started build
10/19/2011 First flight
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05-16-2014, 04:49 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Quote:
Originally Posted by humptybump
A couple interested bits of data ...
"350HP is 75% power"
"4.4 litre flat-vee"
"with all the stuff it needs weighs 670lbs"
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I missed that, thanks, it must be a 179 deg Vee, (looking at the block picture) with single plane crank and fork and blade connecting rods. Good balance, bearing area and turbocharger efficiency, $$$.
OK, 179deg is a joke, but it's not what one would think as a vee configuration.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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