sigh007 发表于 2012-3-31 17:42:45

MIL-STD-1557A


                   MIL-STD-1557A, MILITARY STANDARD: DESIGNATION OF AIRCRAFT PROPULSION RECIPROCATING ENGINES (25 OCT 1983) ., This standard describes the method of assignment used by the Military Services in establishing the type and model designation of aircraft propulsion reciprocating engines.         
         
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