Four months after the Federal Aviation Administration grounded the Boeing 787 Dreamliner with an emergency airworthiness directive, United Airlines is putting the fuel-friendly plane back in the air today. The Dreamliner had overheating issues with its lithium-ion battery, which saw two notable failures prior to its January grounding, but a recent revamp of the battery system might put some fliers' fears to rest. It's worth nothing that the FAA approved the battery fix despite the fact that it doesn't quite address the root cause of the problem, but airline executives don't appear to be overly concerned -- both Boeing CEO Jim McNerney and United CEO Jeff Smisek will be on today's Dreamliner flight from Houston to Chicago. For the moment, United's Dreamliner is limited to domestic flights but if all goes well, it'll return to international travel on June 10th, with a flight from Denver to Tokyo.

Filed under: Transportation

Comments

Via: Business Insider

Source: United Airlines

With the third X-51A WaveRider failing to reach hypersonic speed due to a fin failure last August, it seemed the United States Air Force would possibly forgo the fourth (and final) run. On the morning of May 1st, however, that last X-51A got its chance to soar, successfully reaching Mach 5.1 during a record 370-second flight. According to the Wright Patterson Air Force base, the aircraft's rocket booster helped it hit Mach 4.8 about 26 seconds after being released from a B-2H at 50K feet, at which point its air-fed scramjet brought it to 60,000 feet while achieving hypersonic flight. The USAF notes that "it was the longest of the four X-51A test flights [230 nautical miles] and the longest air-breathing hypersonic flight" -- surely taking some of the sting out of the $300 million program's previous shortcomings. Past flights aimed to hit Mach six, with the first and second tests only sustaining Mach five.

The aircraft made destructive splashdown landing into the Pacific as planned, but data from the whole flight was recorded. The USAF isn't planning a follow-up to the X-51A anytime soon, though the program will likely serve as a reference for future designs. You can dig into the official rundown at the link below.

Filed under: Misc, Transportation

Comments

Via: Slashdot

Source: USAF

No, you're not looking at an early preview of Star Wars Episode VII -- it just might represent the future of air transport, though. Boeing has spent years developing a truly quiet supersonic airliner concept, the Icon II, and what you see is an aerodynamics test of a mockup in a vaguely Death Star-like wind tunnel at NASA's Glenn Research Center. The starfighter design is for more than just show, as you'd suspect. Its V-tail design moves sonic booms further back, reducing the chance that shockwaves will reach the ground (and our ears) intact, while the top-mounted engines isolate engine noise. Boeing and NASA are ultimately hoping for production passenger aircraft discreet enough to fly over land at supersonic speeds, although we can't help but think that the sci-fi look is a convenient bonus.

Filed under: Transportation, Alt

Comments

Source: New Scientist

Nervous flyer? If so, it's probably best you weren't heading from Addis Ababa to Nairobi on business recently. If you were, you might have found yourself onboard the first commercial 787 Dreamliner flight since the global fleet was grounded due to concerns over battery failures. The flight comes just days after the FAA approved Boeing's fix, prompting deliveries of the new craft to resume. With Japan already having cleared the 787 for takeoff, we can expect to see a few more of them in our skies soon. We're more interested in joining the mile-high Android club.

Filed under: Transportation

Comments

Source: Reuters

Japan's transport minster, Akihiro Ohta, announced today that the country's airliners can resume flying grounded Boeing 787 Dreamliners once a newly approved battery system is installed. "We have reached a conclusion that there is no problem with the judgment by the FAA," Ohta told the Associated Press. Back in January two separate fires caused by the 787's lithium ion batteries led to the FAA temporarily grounding all Dreamliners. Japan's decision comes shortly after Boeing's CEO, Jim McNerney, stated during the company's recent fiscal conference call that he expected all 50 aircraft to be fixed by the middle of May. Japanese airline officials are forecasting a slightly longer timeline, with the country's 787s returning to the skies around June and test flights scheduled to begin on April 28th.

Filed under: Transportation

Comments

Via: The Verge

Source: Associated Press

Now that Boeing has received the all-clear to implement its battery fix for the 787 Dreamliner, aviation buffs have mostly been left waiting to hear when they can once again climb aboard the advanced jet. It might be a short wait, according to CEO Jim McNerney. During a fiscal results call, he anticipated 787 deliveries resuming in early May, with all 50 aircraft fixed by the middle of that month. Passengers will just have to wait for airlines to resume (or establish) scheduled flights before they can once more enjoy some modern mid-air luxury.

Filed under: Transportation

Comments

Source: Reuters