HUNTSVILLE, Ala., discloses eric clapton Jan Eric Clapton tickets – ericclapton Eric Clapton tickets . 14 clapton recalls /PRNewswire-USNewswire/ — A technology developmentengine that may help NASA safely return astronauts to the lunar surface hassuccessfully completed its third round of testing. The goal of these tests isto reduce risk and advance technology for a reliable and robust rocket enginethat could enable America’s next moon landing.(Logo:)The tests by Pratt & Whitney Rocketdyne in West Palm Beach, Fla., helpedgather data on this concept engine that might play a role in the next stage ofhuman exploration of the moon Most rockets make spacecraft travel faster. Thegoal of a lunar lander descent engine is to slow the vehicle so astronauts canland safely.The Common Extensible Cryogenic Engine, or CECE, is a deep-throttling engine,which means it has the flexibility to reduce thrust from 100 percent down to10 percent — allowing a spacecraft to gently land on the lunar surface Eric Clapton tickets – wikipedia Eric Clapton tickets . The13,800-pound thrust engine uses extremely cold liquid oxygen and liquidhydrogen as propellants.During the test, the engine was successfully throttled from a high of a 104percent of the engine’s potential down to eight percent, a record for anengine of this type.
A cryogenic engine is needed to provide high performanceand put more payload on the surface of the moon eric clapton layla . The CECE demonstrator hasevaluated two engine configurations during three rounds of hot-fire testing.”The first test series in 2006 was a challenge but showed promise,” said TonyKim, Deep Throttling Engine project manager at NASA’s Marshall Space FlightCenter, Huntsville, Ala complete clapton . “Testing in 2007 provided an in-depth examination oflow-power-level throttling and engine performance characteristics clapton layla . This thirdcycle we actively addressed and found solutions to the challenges we faced.”The team carefully assessed test results that showed pressure oscillations inthe engine at lower throttle levels called “chugging.” Chugging may not be aconcern for the engine itself, but the resulting vibrations could have thepotential to resonate with the structure of the rocket and cause problems forthe lander or crew.Injector and propellant feed system modifications successfully eliminatedengine chugging by controlling liquid hydrogen and liquid oxygen flow to thecombustion chamber complete clapton cd . The latest engine configuration incorporates a newinjector design and propellant feed system that carefully manages thepressure, temperature and flow of propellants.”The technology developed from this effort will help engineers successfullydesign future cryogenic engines to meet the throttling requirements of theConstellation Program’s Altair lunar lander,” Kim said.The CECE is based on the existing Pratt & Whitney Rocketdyne RL10 upper stagerocket engine.
Previous first-hand flight experience, as well as this data,will allow engineers to develop simulation models that can focus testing forefficiency and effectiveness.The CECE collaboration includes engineers from Marshall, NASA’s Glenn ResearchCenter in Cleveland, and Pratt & Whitney Rocketdyne . NASA has invested in CECEtechnology since 2005 as part of the Propulsion and Cryogenics AdvancedDevelopment project at Glenn clapton cream Eric Clapton tickets . The project is funded by the ExplorationTechnology Development Program in NASA’s Exploration Systems MissionDirectorate.For more information about the CECE, visit: Edwards, +1-202-358-1756, , or GreyHautaluoma, +1-202-358-0668, , both of NASAHeadquarters, Washington; or Jennifer Morcone of NASA Marshall Space FlightCenter, Huntsville, Ala., +1-256-544-0034, ; orKatherine K crossroads clapton . Martin of NASA Glenn Research Center, Cleveland, +1-216-433-2406, .
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