Metal Printed Turbine Blades: First Test скачать в хорошем качестве

Metal Printed Turbine Blades: First Test

Those 3-D printed experimental turbine blades are in the engine, and the engine is in the test cell. We spin that thing at max rpm, which is 7800, and the are also at about 840F. That's low, because we do not have jet nozzle which allows pressure and temp to build up in front of it. The temp limit for these blades is just over 1200F in service. ... That's the subject of the next test. Max rpm and max temp. Stay tuned, Jet People! Within a couple hours of posting this video: @chrismoule1: Did anyone else see the bolt? drop from the front of the cowling at about 8:19? That could have caused a bit of a problem if it had been ingested. My Reply: I had not noticed, but you are right. It's one of the bolts used to fix the black fiberglass bellmouth to the inlet. Confirmed by the gold color, they are what I call hardware store grade 8 cadmium plated bolts. They all had lockwashers, and were checked for torque. The junction between the bellmouth and the engine is a couple feet behind the entrance to the bellmouth, so it's very unlikely the bolt would ever enter the engine, but if it did, the consequences would be severe. Based on this incident, we will replace the lockwashers with self locking nuts, which are aviation hardware. Thanks for bringing this to my attention.