Posted: 17 Jul 2007, 22:35
Ah yes, the Eclipse 500. My employers developed the welding technique that they use to buld the Eclipse.
It's called Friction Stir Welding and works a bit like rubbing two Boy Scouts together to make a fire. They press the two panels together, maintaining a precise load, and then heat the joint up by pushing a mandrel against the joint and spinning it like crazy to melt the metal, while the mandrel moves along the joint line.
Seems it's loads stronger and more accurate that either rivets or adhesive bonding. Quite how you repair one if it gets bent I'm not sure, as I'd think the whole aeroplane would be in one piece after 'assembly'.
For some time they had a largish chunk of Eclipse in the High Bay of our plant in Minneapolis, although it was just a big metal tube to the unititiated.
It's called Friction Stir Welding and works a bit like rubbing two Boy Scouts together to make a fire. They press the two panels together, maintaining a precise load, and then heat the joint up by pushing a mandrel against the joint and spinning it like crazy to melt the metal, while the mandrel moves along the joint line.
Seems it's loads stronger and more accurate that either rivets or adhesive bonding. Quite how you repair one if it gets bent I'm not sure, as I'd think the whole aeroplane would be in one piece after 'assembly'.
For some time they had a largish chunk of Eclipse in the High Bay of our plant in Minneapolis, although it was just a big metal tube to the unititiated.