No sound like the General Electric J-79 Gas Turbine, model GB101(civilian rendition LM1500...Land & Marine). As the Compressor spools up, whine of the starter, variable inlet guide vanes closed. At some point around 1500 RPM twin igniters arc. The sound of thunder as the fuel air mix is ignited. As the CIT sensor and feed back cable operates the variable geometry, the starter stays engaged until G.G. is at some point around 3000 RPM. T1 temperature starts to drop (ambient inlet),T2 temperature climbs and T3 approaches 1100 F as the fuel control pushed the innards towards 1500+ HP! The scavenging oil approaches 200 + F. The scavenging oil pump located in insulation in the AFT bearing frame starts to heat up like a barbecue! At -40F the Combustor casings glow Reddish Blue and heat emanating from the combustor aft is like non other. As the heat penetrates the PT foils (Blades) the foils growth is so extreme they seem to have zero clearance to the honeycomb seals that ensure all heat must pass through the PT!
Check out.... S&S TURBINE on the NET....I dawn coveralls at their test cell from time to time:
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Today's Featured Article - Tractor Implements and Their Use - by Curtis Von Fange. Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he reached his early sixties
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