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September 25, 2011

ANN's Daily Aero-Linx (09.25.11)

Aero Linx: 787 Dreamliner Flight Test The home page for the Boeing Dreamliner 787 Flight test program, the 787-8 Dreamliner will carry 210–250 passengers on routes of 7,650 to 8,200 nautical miles, while the 787-9 Dreamliner will carry 250 – 290 passengers on routes of 8,000 to 8,500 nautical miles. In addition to bringing big-jet ranges to mid-size airplanes, the 787 will provide airlines with 'unmatched' fuel efficiency, resulting in exceptional environmental performance. The airplane will use 20 percent less fuel for comparable missions than today’s similarly sized airplane. It will also travel at speeds similar to today’s fastest wide bodies, Mach 0.85.

ASOS Acronym for Automated Surface Observing System. This system is a collection of automated weather instruments that collect data. It performs surface based observations from places that do not have a human observer, or that do not have an observer 24 hours a day.

"This was not an easy re-entry to predict because of the natural forces acting on the satellite as its orbit decayed. Space-faring nations around the world also were monitoring the satellite's descent in the last two hours and all the predictions were well within the range estimated by JSpOC." Source: Nick Johnson, NASA's chief scientist for orbital debris, at NASA's Johnson Space Center in Houston, following the re-entry of UARS over the weekend.