Around World In Less Than 60 MINUTES

I tried to come up with a clever caption here, but all I can think of when I see this is "Zoooooooooooooom!"

Talk about improving commute time.

DARPA’s research and development in stealth technology during the 1970s and 1980s led to the world’s most advanced radar-evading aircraft, providing strategic national security advantage to the United States.

Today, that strategic advantage is threatened as other nations’ abilities in stealth and counter-stealth improve.

Restoring that battle space advantage requires advanced speed, reach and range. Hypersonic technologies have the potential to provide the dominance once afforded by stealth to support a range of varied future national security missions.

Extreme hypersonic flight at Mach 20 (i.e., 20 times the speed of sound) — which would enable DoD to get anywhere in the world in under an hour — is an area of research where significant scientific advancements have eluded researchers for decades.

Thanks to programs by DARPA, the Army, and the Air Force in recent years, however, more information has been obtained about this challenging subject.

“DoD’s hypersonic technology efforts have made significant advancements in our technical understanding of several critical areas including aerodynamics; aerothermal effects; and guidance, navigation and control,” said Acting DARPA Director, Kaigham J. Gabriel. “But additional unknowns exist.”

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An Engine Of Ice and Fire

Preps Continue for Launching Engine Icing Research

Polar opposites attract in the puzzling case of ice crystal engine icing, where the frozen crystals can be ingested into the core of a jet engine. (Image credit: NASA/Eric Mindek)

NASA scientists are making progress in their preparations to mount a detailed research campaign aimed at solving a modern-day aviation mystery involving the unlikely combination of fire and ice inside a running jet engine.

The investigation deals with the seemingly strange notion that ice crystals associated with warm-weather storms can be ingested into the core of a jet engine, melt and then re-freeze, potentially causing the engine to lose power or shut down altogether. Safety officials have documented more than 150 incidents of this phenomenon since 1988. Most of the incidents have occurred in the tropics.

“It doesn’t seem intuitive that ice can form in the core of a warm engine,” said Ron Colantonio, manager of the Atmospheric Environment Safety Technologies Project at NASA’s Glenn Research Center in Cleveland.

So in order to make sense of the mystery, NASA and its research partners are planning to gather information by flying a specially-outfitted business jet in high-altitude, warm-weather conditions suspected of having a large amount of ice crystals.

Technicians in California are currently modifying a Gulfstream G2 airplane to hold a suite of meteorological instruments, with hopes of having everything ready for initial trial runs of the full setup in Florida this August.

The research team then will take the lessons learned from their trial runs, make appropriate changes and prepare for the primary campaign, which is now targeted between January and March, 2013. These flights will take place over Darwin, Australia, an area known for having the type of storms that include high levels of ice crystals.

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