United States. National Advisory Committee for Aeronautics, United States. National Aeronautics and Space Administration · Washington : G.P.O. · leaf 185
oo high, because the two radiators were not quite identical, the one with roughtubes having a free area about 3 per cent less, and a head resistance about 7.5 per cent higher,than the other had before its tubes were smoothed. Approxi-mate freeair speed,mi./hr. Airflow, lb./sec. per sq. ft. Pressure… … 4 6 6/0 Disfan-e o/ong Tunne/-inches. V. EFFECT OF SURFACE ON HEAD RESISTANCE OF A RADIATOR. The radiator C-8, 5 inches (12.7 cm.) deep, with f^-inch (0.87 cm.) circular cells, wasalso tested for head resistance with the two conditions of surface described under Heat transferfrom a radiator, viz,…
Aeronautics
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