What's there to disagree with ?
At 10 gph more that's 180 lbs more in take off weight for a 3 hour flight.
A piston engine consumes about 0.5 lbs/hp/hr
That turbine is just over 0.8 lbs/hp/hr
For 200 HP output, that difference is 10 gph
. . . so 125lb turbine + extra fuel or 305lbs for a piston and less fuel cost . . . for the life of the engine.
. . . take your pick.
Wolfgang
----- Original Message -----
Sent: Friday, July 20, 2012 10:11 PM
Subject: Re: New Turbine Engine
I have to disagree with Wolfgang on this one, but I do accept his premise that a 240 HP turbine will consume a lot more fuel than a 240 HP recip.
But the amazing thing is getting 241 HP out of a 125 pound engine. *That* is impressive!
Put it in context - my IO-360 gets 180 HP and weighs 260 pounds. Marv's engine provides 33% more horsepower and weighs less than half. We can run every comparison under the sun and argue all day long to no conclusion -- how much extra fuel weight we need to carry, how much less engine weight we need, and so forth -- but the bottom line is that this little engine enables some aircraft designs that just would not be possible with a recip.
- Rob Wolf