Paul and Doug,
I've added compressor horsepower to the Turbochart spreadsheet. This
feature could actually come in handy to find the right size turbine for
turbocompounding.
In the example shown, the engine is a 2-rotor running AGE 85 ethanol,
making 421 hp at sea level with a manifold pressure of 41 in/Hg.
At 15,000 feet, this setup would have a compressor pressure ratio of
2.45 and the compressor would use 38 hp, assuming adiabatic efficiency
of 0.7, which is what the chart shows for the Rotrex supercharger.
I'm going to add a section for the exhaust side as well, but that is
more difficult.
Regards,
Gordon.
I know you guys are serious but.............
If you think auto gas is hard to find on a cross country try ethanol.
Only Doug will take the ethanol factory with him as he flies around the
world. If you think 8 hours to recharge your electric car is long try
8 weeks to get enough ethanol to fly for the next 8 hours.
What are you going to do while the grass grows Doug?
I guess you will have time to learn the local language.
We need to make do with the fuel that is readily available.
Paul Lamar
Paul,
You never change do you:) Wasn't that your hand holding a bottle of fine
ethanol near the rotary engine museum in Germany last year? Yea Ok so it had
some water and grape juice mixed in as well. I am also against making
ethanol out of human feed stocks as well but most of the corn they are using
in USA and Canada at the moment goes on to become feedstock for cattle. Yes
there are tons of other alternatives feedstocks and I expect scientists will
find or create some other crops to act as energy producers. In the short
term you are right ethanol is not going to quench our thirsty cars. It could
supply the GA community though which is what AGE 85 was specifically
designed to do.
So far in planning the trip I have been able to find breweries or ethanol
factories in every stop except Fuji and Majoro. I may have to drop ship
several drums there or spend a few weeks fermenting coconuts and fruits:)
Drip drip drip. This trip is a heck of lot easier than what the earlier
pilots had to deal with. If worst come to worst I can always use auto gas
to get out of a pinch.
Speaking of ethanol. Gordon what have you been sipping:) 421 Hp. Really?
At those boost levels I could understand about 350 hp on gasoline plus
another 12% for using ethanol. WOW!!! At this rate I'll have to take off
on 3/4 throttle. Let me understand this correctly. If I want only 350 Hp
and I input that number your data at the bottom will show the amount of
boost that is required to obtain this?
The chart is looking better all the time. Thanks.
Doug Fir
I am a bottom line kind of guy.
You mean direct injection heavy fuel Wankel wine.
You veggies really don't care what the price of steak is.. do you?
Paul Lamar
Paul,
Yea that's the heavy fuel I was thinking about. Nope I have no worries on
steak prices, at least not for the last 30 years. You know it takes about 10
lbs of corn to transmute into one lb of steak. I'll admit corn doesn't
taste as good with steak sauce:)
No I don't know the price of gasoline in Germany. I would never consider to
rent a car there. The trains are fast, frequent and go almost everywhere.
SOCAL and their love affair with cars Jeez:) BTW after the tar sands are
finished we can go after the shale oil, and then start coal gasification,
and underwater offshore drilling. I happen to think those hydrocarbons
could be put to a lot better use making materials than burning them though.
Ok that's my 2 cents so I'll shut up for the rest of this fiscal year. Now
where did I put the granola?
DougFir
I put my wife on the train in Paris to Trento Italy
and she was amazed at how bad they have become. She had traveled
extensively in Europe by train decades ago. The roads
in Europe are as jammed as they are in So Cal but one would
not know that unless one drove somewhere in Europe :) It is called
freedom with privacy and everybody wants it. Even in Japan the Bullet
train from Kyoto to Hiroshima was twice the price of renting
a car and driving. Both France and Japan have extensive
nuclear power so you would think trains would be cheap.
Paul Lamar ...No rotor no motor.
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