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Specifications pertaining to WW1 era propellers
Hi,
I have found in a 1920 book (by Engineering Division, McCook Field, Dayton) a listing of specifications by "Bureau of aircraft production".
Is anyone knowing where I can read those specifications, particularly those about glueing (14000B, 14020A and 14024), finishing (14008A, 14012 and 14019) and propeller construction in general (29500D) ?
Regards,
PM
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