^XlM … ASCENT 07 THE SANTOS-DUMONT DIBIGIBLE BALLOON NO. fi AT L0NGCHAMPS ON JULY 12. speed of 20.5 knots an hour was registered as the meanof several runs over a measured mile. The mean rev-olutions were 740 per minute, the boiler pressure 150pounds to the square inch, and vacuum 26% inches,the pressure…
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