According to the FAA, Summer travel is expected to be relatively smooth at most of the nation’s airports. This is, in large part, due to deep capacity cuts and fewer flights.
However, one key airport that could be facing a number of delays is O’Hare International Airport. The FAA says the carriers have scheduled almost as many flights as the airport can handle in peak travel times on good-weather days, and added operations that far outstrip O’Hare’s capacity in stormy weather.
The over-scheduling is occurring in 15-minute bursts – typically at the top of the hour, when research shows flight make more money. For instance, on Thursday (6/10), American Airlines scheduled 27 flights and United scheduled 39 flights between 8 a.m. and 8:15 a.m. That’s seven more flights than the airport can handle under the best conditions. O’Hare can handle approximately 100 departures an hour, but not 66 in a 15-minute window.
FAA officials warned that congestion problems forming at O’Hare could worsen as the carriers have already announced plans to expand their schedules in the second half of 2010 — adding almost 22,000 more flights at O’Hare from July through December compared with the same period last year.
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Researchers at MIT say they have come up with designs for a new generation of passenger aircraft that could use as much as 70 percent less fuel than today’s airliners.
MIT said that its designs for a so-called “N+3″ airplane–meaning three generations beyond today’s airplanes–could leverage new technologies like advanced airframe configurations and propulsion systems and could deliver the 70 percent fuel savings by around 2035.
Instead of using a single fuselage cylinder, MIT engineers used two partial cylinders placed side by side to create a wider structure whose cross-section resembles two bubbles joined together. They also moved the engines from the usual wing-mounted locations to the rear of the fuselage. Unlike the engines on most transport aircraft that take in the high-speed, undisturbed air flow, the engines take in slower moving air that is present in the wake of the fuselage. Known as the Boundary Layer Ingestion (BLI), this technique allows the engines to use less fuel for the same amount of thrust, although the design has several practical drawbacks, such as creating more engine stress.
Planes built with the MIT designs will likely be as much as 10 percent slower, but that time loss could be offset by quicker loading and unloading due to the planes’ wider bodies.
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