|Forum topic by Dan'um Style||posted 06-30-2013 12:44 AM||730 views||0 times favorited||4 replies|
06-30-2013 12:44 AM
Found this article and found it fascinating. Figure to share it with my BUDS.
NEXT is a solar electric propulsion system where electricity from the spacecraft’s solar panels is used to power a a 7-kW class ion thruster. In this, particles of xenon gas are electrically charged and then accelerated to speeds up to 90,000 mph (145,000 km/h). Such thrusters have already been used on spacecraft, such as NASA’s Dawn probe, and engineers are very interested in them because of their much higher performance compared to conventional chemical rocket engines.
NASA hopes to use NEXT or some version of it in a wide range of deep space missions. The thrust made by an ion engine is tiny compared to a chemical rocket, but its very high efficiency combined with its ability to fire for years on end means that it can build up astonishing speeds over time. As for the test model, it is on its way to a well-deserved retirement as it is switched off.
“The NEXT thruster operated for more than 48,000 hours,” says Michael J. Patterson, principal investigator for NEXT at Glenn. “We will voluntarily terminate this test at the end of this month, with the thruster fully operational. Life and performance have exceeded the requirements for any anticipated science mission.”
-- keeping myself entertained ... Humor and fun lubricate the brain