Whr Figures, From various sources Options

[djellison]

I've been looking at the new entries at the PDS for WHR quotes, to compile as good a list of actual quoted Whr values as I can......so if you find one, add it to this thread and I'll update this post with figures....any source as long as it's an actual figure and an actual sol.


B0515 - 418 Whrs
B0522 - 462 Whrs

[Tom Tamlyn]

According to the latest Spirit update from JPL (9/14/2006), Spirit's solar power has finally started to tick upwards, to 287 watt-hours, from a low of 277 on sol 944 (August 29).

TTT

[helvick]

Nice to see that the power situation is slowly but surely tracking back upwards. I think we can expect a couple of months of this slow but steady rise in power provided we don't have any early storms.

Time for some updated power charts and my predictions for those who want to see when Spirit is likely to be able to make a move from here.
Right now power looks like it will rise to somewhere around 340whr/sol by the time dust becomes an issue again (~Sol 1034). That's plenty of power to remain safe and healthy while staying put but a bad early dust storm could still cause trouble and the risk of one of those rises significantly as we head into the lead into the back end of SH winter at the end of November\start of December. Even if we do have some local storms the overall power situation is unlikely to drop back to dangerously low levels again this winter, at least for any significant length of time.
It is important to point out that these charts include the ~15% benefit from Spirit's current favourable tilt and without that extra boost she will be back in trouble and will remain effectively unable to move anywhere until she gets a good cleaning. My guess is that she will need to be able to generate 400whr/sol under current conditions (with tilt) or around 340 whr/sol (without tilt) before they make a serious attempt at moving any distance. A minor change in orientation is currently on the cards but that is going to be a very delicate manoeuvre as they will want to maintain that tilt power benefit.

Chart without any cleaning events.


Were we to see similar events to last year then the peak power output would rise to around 600whr/sol from around Sol 1090 (end of Jan 2007). That would certainly make a dash for Home Plate very possible. Here's hoping.
Chart with cleaning events as per last year.