September 16, 1920 AVIATION 131 … and this increase in beat transfer may be so great as to connt- FiG. 18 « tbe decrease in air flow, but is not great enough in e observed to overcome the disadvantage of the in- the pro] : its bead resistance is also heat transfer is hig^ b gfat of 1 low B| t ne reisnon netween tbe mass flow of air…
Aviation Week
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