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.
What It Is. A small engine primer is a bulb of plastic with a hose running through it. This hose feeds from the gas tank to the engine carburetor.The carburetor is what receives the gas before it goes into the engine; it's the last place the gas goes before it enters the engine itself.hat It Is. A small engine primer is a bulb of plastic with a hose running through it. This hose feeds from the gas tank to the engine carburetor.