Deep Space One Mission Comes To An End
jfoust writes "NASA's Deep Space One mission will officially end this week, according to published reports. The spacecraft was launched over three years ago to test advanced technologies like ion drives and, despite the failure of its star tracker, was able to make a successful flyby of the comet Borrelly in September. The project tried to extend the mission by several months to fly by an asteroid, but could not coax the funding needed for the mission extension out of NASA. There's a short summary about the mission's end at spacetoday.net, and more details from the AP and the JPL Universe employee newspaper."
I think it is easy to rate this mission as a great success. If I recall correctly it used something like 9 new technologies including the ion drive and AI. Considering the fact that it continued for 2 years longer than it was designed for (and probably could have gone for longer if they'd gotten the additional funding) says great things about the advancements in space exploration and lends the possibility to deep space exploration on a level significantly higher than what we could previously achieve.
I stole this Sig
The end of this successful mission should bring our minds back to the fact that this was only possible through government funding and control.
Pure capitalism would never be able to make these bold steps into the future.
If we were to spend more time organising ourselves rationally through our government, and less time irrationally competing to produce slightly differently branded soft drinks, we would by now have a colony on Mars...
But most importantly, you have to worry about the cost of decades of mismanaging a white elephant manned space station project and its associated fleet of hyper-expensive shuttles. It's hard to come up with a couple of million dollars after you've poured 100 Billion down the shit hole.
Exactly the way I understood this as well. The propulsion provided on the DS1 probe was suited to continuous operation over a long period of time, resulting in gradual, continuous acceleration of a very small craft using a very small amount of thrust.
http://nmp.jpl.nasa.gov/ds1/tech/ionpropfaq.html
Under the circumstances for which ion propulsion is appropriate, it can push a spacecraft up to about ten times as fast as chemical propulsion. Because the ion propulsion system, although highly efficient, is very gentle in its thrust, it cannot be used for any application in which a rapid acceleration is required. With patience, the ion propulsion system on DS1 imparts about 3.6 km/s to the spacecraft. To undertake the same mission with a chemical propulsion system would require a more expensive launch vehicle and a larger spacecraft to accommodate a large tank for the chemical propellants.
You need the opposite to boost the ISS - a large amount of thrust in a short period of time to move a very large object.
The big reason is that the Internation Space Station, way over budget, is sucking money out of other programs like a black hole.
It's sad that the political boondogle (ISS) to explore the most boring place in the Solar System (low-Earth orbit, been there done that)is killing off other, more interesting and cost-effective projects.
--Iz