Current testing requirements for high temperature alloys are defined in general industry specifications (ASTM, AMS), as well as in user specifications. Many of these requirements were established in the 1960's when production practices were yet to be refined.
cowling - protective covering consisting of a metal part that covers the engine; there are powerful engines under the hoods of new cars; the mechanic removed the cowling in order to repair the plane's engine.
They are both internal combustion engines. One is driving a transmission and a vehicle and the other is driving a generator. A generator is used to to â¦ produce DC current, that is driven by an electrical AC motor, Hench the term Motor-Generator applies. An engine uses it's own source of fuel, Gasoline, for it's power source. Never call a ENGINE a MOTOR..........