The entrance 6 of a passage leading cooling air to the cylinders of an aircraft engine comprises an adjustable flap valve 10, which opens outwardly and is inwardly streamlined. The engine is surrounded by a streamlined cowling 4 and the entrance 6 is slightly offset to the bank of cylinders 3, the exit being on the opposite side of the cowling. In a radial‐cylinder engine a separate air passage is provided for each bank of cylinders.
(1932), "Month in the Patent Office: A Selection of the More Important Aircraft and Engine Specifications Published Recently", Aircraft Engineering and Aerospace Technology, Vol. 4 No. 11, pp. 294-294. https://doi.org/10.1108/eb029622Download as .RIS
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