2008-11-03 - Nasa and GE engine testsGE and NASA to test new Jet Engine Systems ind windtunnel

Windkanalversuche für Propfan-Konzepte<br /> GE Aviation and NASA are teaming on a wind-tunnel test program to evaluate counterrotating fan-blade systems for "open rotor" jet engine designs that could sharply reduce fuel consumption. The testing will begin in wind tunnel facilities at NASA's Glenn Research Center in early 2009 and continue into mid-year.

This is not a full engine test, but a component rig test to evaluate subscale fan systems using GE's and NASA's advanced computational tools and data acquisition systems.
Rising fuel prices have led GE and NASA to re-visit open-rotor engine systems. In the 1980s, GE successfully ground-tested and flew an open-rotor jet engine that demonstrated fuel savings of more than 30 percent compared to similar-sized, jet engines with conventional, ducted front fan systems. Since then, GE has dramatically advanced its data acquisition systems and computational tools to better understand and improve open-rotor systems. "GE and NASA journeyed down this path 25 years ago with great technical success," said David Joyce, president of GE Aviation. "Today's fuel crisis greatly influences future jet engine concepts. GE and NASA will evaluate open-rotor concepts in the wind tunnel with far greater technology capability." For the NASA tests, GE will run two rows of counterrotating fan blades at 1/5 subscale in several configurations, tested in simulated flight conditions created in Glenn Research Center's 9-by-15-foot low speed and 8-by-6-foot high speed wind tunnels.

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