Reset of memory turns out to be just what the computer doctor ordered
Voyager 2 was launched 33 years ago and currently remains on course, traveling out of the solar system. It is currently 8.6 billion miles (13.8 billion km) from Earth, passing through the heliosphere, a magnetic bubble that surrounds our solar system. It continues to transmit data, even as it passes through this volatile region.
However, three weeks ago the probe started transmitting garbled messages to Earth. NASA program administrators put the spacecraft in an engineering mode, restricting it to only sending health updates to Earth, while they diagnosed the issue.
NASA’s Voyager 2 project manager Ed Massey comments, “In some spacecraft that are closer to the sun one could think of single event upsets caused by solar activity. But we’re so far away, it’s hard to say that’s what caused it. We’re like 93, 94 AU out.”
The command to reset the probe was set on May 19, and by May 22 the probe was back in action talking to Earth in its usual fashion.
h/t dbs mod
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John Blake
Do you remember what computers were like in 1977?
I can’t imagine that it is still operating! My great respect to the engineers who built it.
I definitely remember when this was built and launched.
The loonies were screaming that the New Ice Ages were going to freeze us solid,
and the increasing human population of the Earth was going to put us into food wars,
water wars and we’d be stacked like cordwood by the end of the century.
Oh, and Peak Oil had happened so we’d all be walking everywhere and freezing to death
by the millions as all the gas would run out by 1995.
More on what´s happening up there:
http://www.holoscience.com/news.php?article=0yfteeje
John Blake:
1967 + 33 = 2000
There’s always been worry about ‘climate change’ it just depends on the fad of the day :o)
1895 – 2008 and counting…
and 4 year later
1971 NASA predicted ice age
Correction sort of
and 4 year later [ie after 1967]
1971 NASA predicted ice age
Reply to Smokey:
What makes anyone think that this is any more “REAL” than the virtual reality of Climate Change?
The BIG BANG universe is nothing more than mathematical assumption built on mathematical and is no more reality than the virtual reality of Climate modelling.
Climatology wrote the book on scientific propaganda. How else do you thing they could attract BILLIONS of dollars to hunt for chimera such as gravity waves, black holes, dark matter, dark energy, God particles ad infinitum.
Taxpayers money being spent in the vain search for things that can’t be seen or even defined nor understood unless you are “in the club” of tenured mathemagicians.
“We can’t find or even define what we are looking for but our calculations just can’t be wrong. Trust us we’re professors and PhD of mathematics.”
Sound familar.
they have stated they are not sure yet what caused the glitch. A statement from a real scientist.
The Voyager spacecraft use iron core memory, you know the little iron doughnuts that have two wires running orthoganolly though them. Nothing like silicon memory. If it was a cosmic ray that flipped a bit it was a damn strong one.
http://en.wikipedia.org/wiki/Voyager_program
OT but I’ve noticed a few commenters asking about stories of an impending ice-age around this time. Here are some quick links you might be interested in.
(scroll down for the years in the 1970s along with publication)
http://anotherviewonclimate.wordpress.com/2010/01/15/time-announces-approaching-ice-age/
(150 years of global cooling and warming fears)
http://newsbusters.org/node/11640
If you look out to the right you will see Voyager 2 as we do a lazy pass by…
They built a craft that’s about as technological advanced as an abacus compared to a modern scientific calculator, and it’s still going strong.
Had they built it last year, it’d probably not have lasted for 3.7 years even, due to insurance and administrative reasons and risk assessment, oh and of course green tech reasons.
Interesting … it appears the ‘computer’ aboard Voyager 2 is an actual microprocessor, an design RCA COSMAC (CMOS) design, an RCA 1802 (an 8-bit uC) to be specific.
Excerpt from wikipedia, about 1/3 the way down the page – Microprocessor:
… while at this website they contend not an RCA COSMAC 1802 uP:
A little more authoritative ‘source’ of info on voyager’s three computers at history.nasa.gov / computers / Ch6-2.html :
– Chapter Six –
– Distributed Computing On Board Voyager and Galileo –
Voyager – The flying computer center
It appears there are ‘stuck bits’ in various memories already, and they are worked around by the ‘uploaded’ software from Mission Control … also, it appears the Viking computer architecture was adopted for the Voyager series.
A couple short excerpts:
.
.
Three actually, X, Y and a sense wire … half currents through either X or Y will _not_ address a particular core *while* the intersection of X and Y which gives full current (and full magnetic field) and possibly causes a polarity change in the core and a possible ‘pulse’ (if the core polarity changes due to the full current, half in the X wire and half in the Y wire and the magnetic polarity in the core changes there is a pulse) in the sense wire …
.
Well using this web site General Relativity Time Dilation Calculator (http://www.1728.com/reltivty.htm) I made the calculations for the jump to light speed, and the time dilation effect of Voyager 1 which is moving at ~62,000 kilometers per hour (http://www.physorg.com/news8817.html) is about:
When Traveling At A Velocity Of 62000 kilometers per hour OR 17.2222 Kilometers Per Second OR 10.701378944007326 Miles Per Second OR 0.000057447075603216146 Light Speed, Then the Relativistic Change Factor = 1.0000000016500834.
This is about doulble typical orbital time dilation effects.
“Velocities in ordinary life which to us might seem incredibly fast have only a miniscule relativistic effect. For example, orbital velocity (5 miles per second) produces a relativistic factor of change of only 1.000000000360219.”
So it’s about double the GPS time dilation. Not too significant, it seems.
“What does this factor mean though? If you were in a spaceship travelling at .9 times the speed of light:
1) the ship’s mass (and you) would increase by a factor of 2.294
2) the ship (and you) would contract in the direction of travel by 2.294, meaning a 300 foot ship would shrink to 130.77 feet.
3) Perhaps the most interesting change is that 1 year to you would seem to be 2.294 years for someone back on Earth.”
We’ll just have to learn how to kick it up a notch if we ever hope to escape the conjectured doomsday of the climate change soothsayers!
Or we could just merge with V…GER! (Star Trek: The Motion Picture).
I think it’s a shame that the name NASA has been tarnished by association with Hansen et al. What a brilliant feat of engineering and calculation. Let these people come to the fore again and reclaim the NASA brand.
If they reset my memory, will I make more sense?
Gneiss [sp] is a form of volcanic rock. Down here in the South USA we have a bird called the rockbird. It rarely comes to my birdfeeder since it usually eats carrion. It is characrized by a featherless bald gray head which looks like a rounded rock. I suspect our Gneiss is a rockbird.
Sic transit gloria NASA.
Enneagram says:
June 12, 2010 at 4:29 pm
Read this, and you’ll understand:
http://www.holoscience.com/news/mystery_solved.html
Interesting. Thanks.
For today’s edition of Find the NASA mistake, take a look at the last diagram on that page.
Yeah I know the image isn’t hosted at NASA, I’m just assuming the footer is accurate: ‘Images courtesy of NASA’. Also note the page is dated 20 March 2002. That is a long time for someone not to notice something that obvious.
If they hadn’t blown countless taxpayer dollars employing Hansen & Schmidt and funding their warming cult, perhaps we could have had instead that many V’gers.
LL says : Global Warming might fall into this:
‘No set of mutually inconsistent observations can exist for which some human intellect cannot conceive a coherent explanation, however complicated.’
Which can easily be proved by pointing out that we could be ‘living’ in a virtual reality with some glitches in the programming. QED
Steven Skinner says, “Is the achievement of all those scientists not really that good because they are ‘government’ and is that achievement even less so because of the opinions of a single man; James Hansen?”
The question is simply this; where are those “government scientists” in railroading Dr. Hansen into scientific and historical obscurity? The man has proven himself to be a fraud on more than one occurrence. I would postulate that Hansen being at the top of the scientific pile at NASA can do a lot of damage to those at the bottom of the pile. I would also postulate that those at the bottom of the pile hoping to one day arrive at the top of the pile can see the same thing happening to them in the event that they succumb to the temptations of political agenda as has Dr. Hansen.
The afforementioned being the percieved problem, how to correct the problem. I have no idea. I would assume that in the evoloution of science as a human activity there must eventually be developed a mechanism by which apparent truth is derived and untruth discarded and practicioners of delibertate deciet are identified and expelled from the community. This is the problem, practicioners of deliberate deciet aren’t being expelled from the community and the community as a whole is losing credibility with the community at large.
Enneagram, the links you gave are very interesting. The concept sounds plausible and I found no obvious counter arguments.
Unfortunately, I’m not qualified to make some calculations.
Enneagram says:
June 12, 2010 at 4:22 pm
Space anyone?, Electrical field?…come on! that´s not possible in a pebbles gravitational universe!
[…]
Read this, and you´ll understand
Amazing that people can be taken in by such nonsense.
Leif Svalgaard says:
Well, not taken in but compared to AGW where the nonsense ist obvious…
Seems I have some work in the queue.