Re: Thanks for the data point - Saab 900 Bulletin Board - Saabnet.com


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Re: Thanks for the data point
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Posted by mag [Email] (#1906) [Profile/Gallery] (more from mag) on Tue, 14 Jul 2009 19:46:25 Share Post by Email
In Reply to: My simple data is what I see consumption wise at the pu, Landjet [Profile/Gallery] , Tue, 14 Jul 2009 18:47:18
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The jet engine operator was the late USAF Colonel Leroy Gordon Cooper, and the incident was in about 1969. Cooper was in Indianapolis working on a racing car. The pilot for Apollo 10 got sick, and Cooper was summoned to Houston to stand in. Cooper's transport was a T38, it was a weekend, and the local Indy airport was out of jet fuel. He tanked up on methanol. He figured that since methanol had fewer BTUs per gallon than jet fuel he would only make it to the next airport where he could refuel properly. He thought maybe he could attain 30,000 feet. At 40,000 feet, he noted that the engines ran better than on jet fuel. He flew to Houston non stop. There he reported to the engineering officer what he had done. The officer got upset, claiming that the engine was probably ruined. But there was no damage.

I'll remember your test as "unknown (non Saab) FlexFuel passenger vehicle, unadjusted, mixed city and highway driving, yields 20% less mileage on E85 than gasoline of unknown formulation." Thank you. I will be satisfied if I can operate that well with a C900 and 190 proof.

Something is puzzling here. If ethanol has only 76,000 BTU/gallon compared to gasoline's 110,000 BTUs (some sources say 125,000 BTUs) then the test vehicle should have seen a mileage reduction of 31% instead of 20%. What gives?


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