It also synchronizes with the main power system, so that when power is shut off, the BuG kicks in without a break in the connection.
“If you’re using backup power, you’re going to have to go without a movie,” Krisciunas says. GE’s BuG puts out 50 kilowatts of power from each of the 777X’s two engines - enough to power all the plane’s avionics and essential systems, but not extras like the galleys and coffee machines and entertainment system.
Mac voiceover fred generator generator#
The main 777X generator, by contrast, uses a mechanical linkage to keep the generator spinning at a constant rate. Since the frequency of the current varies with the speed of the rotor, the system has circuitry that converts it to direct current, and then converts the DC to AC at a steady frequency of 400 hertz, almost seven times higher than what Americans have in their sockets at home. GE’s BuG uses the spinning rotor of the huge jet engine - it’s as wide as the body on a Boeing 737 - to turn a coil inside an induced magnetic field in the generator and produce alternating current. That’s because if there’s a design flaw that causes the main generator to fail, you don’t want the backup failing for the same reason. Image credit: Alex Schroff for GE Reports. Top: A concept for common core avionics from GE Aviation. Image credit: Tomas Kellner for GE Reports. “It has to have a different pedigree,” he says.Ībove: The engineers working in Dayton, Ohio, have developed a full-scale replica of the 777X’s wiring, including miles of multicolored cables suspended in special racks from the ceiling, to test the BuG during development. This time around, GE Aviation will build the backup electrical power system, including the backup generator, or BuG in industry shorthand.Ī certification requirement for the backup generator is that it work in a wholly different manner than the main generator, says Joseph Krisciunas, general manager and president of GE Aviation’s Electrical Power Systems unit. In the past, a competitor provided both the main and backup generators for the 777.
Since GE Aviation will be the sole supplier of engines for the plane - it developed the GE9X, the world’s largest jet engine for the 777X- the company decided to bid on the electrical system as well. More power also entails a new design for the 777X’s generators, the airborne power plants using the plane’s jet engines to produce electricity. In fact, the 777X requires almost twice as much juice as its predecessor. The plane will be also packed with fancy avionics - touch-screen displays in the cockpit that make flying easier, cameras that help pilots navigate on the runway and advanced networking technology called Common Core System. The sleek, raptorlike wings with folding tips of Boeing’s new wide-body passenger jet, the 777X, are not the only departure from the earlier aircraft in the successful 777 series.
0 kommentar(er)
