An old friend from high school sent me this engine part for my birth day today! (hold the applause) This is a HP Pratt & Whitney titanium (6-4) compressor blade specifically the 9th stage. This is pulled from a JT3D engine that came out of a 707 airliner. Oh, and don't think for a minute that I know anything about these! I know how a jet engine works and how to build one (ghetto backyard redneck engineering) but I'm just paraphrasing this information from a real jet engine technician.
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They are beautiful machines! A long time back (we are taking years) he sent me video of him replacing the turbine blades one a jet engine and every time he inserted a blade the turbine wheel/hub... thing would rotate just slightly because of the couple ounce blade being added! I be leave it was some sort of industrial turbo shaft engine with a 1 and a half ton crank shaft! Well, I don't know if its called a crank shaft but the shaft that rotates the turbines and the induction fan. Anyway, it just amazed me how precise and well balanced that engine is! I work on regular piston engines and I onece thought that the tolerances were tight but its nothing compared to jet engines!
Yeah. that little ounce can weight a lot when it comes down to building an engine. I hear my dad complain all the time when the people wanting the engines want to move the mount for it a few inches...
and it's also one of those things where you have to add one of those in a criss cross motion. One on one side then go to the other side and place that one. I took a tour of the engine manufacturing/repairing place around the corner from where I live that was owned by GE. So I'm good when it comes to it.
and it's also one of those things where you have to add one of those in a criss cross motion. One on one side then go to the other side and place that one. I took a tour of the engine manufacturing/repairing place around the corner from where I live that was owned by GE. So I'm good when it comes to it.
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