Assembly issues continue to slow delivery of the Boeing 787 Dreamliner, which is now almost three years behind schedule. Workers at Italian subcontractor Alenia apparently incorrectly installed fasteners where the horizontal stabilizer attaches to the fuselage on some aircraft. Boeing employees in Seattle are now correcting the problem.
“This is not a design issue or a flight-test finding,” says Scott Fancher, vice president and general manager of the 787 program. “This is a straightforward workmanship issue with the installation of a couple of shims and some associated fasteners.”
One wonders if it really was worth outsourcing all the fabrication for this project. Is the Italian subcontractor being backcharged for the repair work? How many more defects will be allowed from a subcontractor before finding a new source for that particular assembly?
The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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