If pressure and temperature drop after the turbine, it would not necessarily be the result of the interaction with the turbine. How would airflow routed through the turbine reduce temperature or pressure? Those would more likely be the result of expansion. If volume remains constant, pressure would actually increase after passing the turbine. I don't see how heat energy is transferred to turbine energy at all. But, since MarkB studied thermodynamics and the rest of us didn't, maybe he can explain. It is the kinetic energy (not heat energy) which is comprised primarily of velocity and density(mass) which is transferred to the turbine. The change in velocity is the measure of energy imparted. Those are my uneducated thoughts, at least. I think most people got pretty close to getting it right.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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