AMONG the aeroengine and aircraft parts manufactured by the drop‐forging and drop‐stamping processes are airscrew hubs and shafts, crankshafts, connecting rods, valves, valve‐rockers, camshafts, dashpot pistons, spar brackets, and windmill propellers. In addition a large number of smaller and less important parts are drop stamped to practically finished dimensions.
Thain, W.A. (1932), "Drop Forgings and Stampings: The Technique of the Process Explained with a Description of the Plant Used", Aircraft Engineering and Aerospace Technology, Vol. 4 No. 5, pp. 120-122. https://doi.org/10.1108/eb029545
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