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Unmanned Spaceflight.com > Mars & Missions > Orbiters > Mars Express & Beagle 2
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djellison
It's not a power issue - it's the UHF antenna being obscured by one or more of the solar panels. The UHF antenna was under all 4 panels. Without them deploying.....the UHF antenna can't 'see' the sky - and a carbon composite solar panel covered in silicon and wires is a very good way to block UHF signals.
tim53
QUOTE (mcgyver @ Jan 19 2015, 06:40 AM) *
I am curious: why did it take so long to find Beagle2 if it is within the planned landing ellipse? Is this the first ever shot HIRISE image of the area?


There is a MOC image footprint over the lander, taken several months after the loss, IIRC. But the image was not received on Earth.

-Tim.
TheAnt
QUOTE (tanjent @ Jan 21 2015, 07:27 AM) *
It is very painful to consider that perhaps there was absolutely nothing else wrong with it. Maybe no more than a badly-placed stone blocking the unfolding process...


Yes that's what I was thinking also when we got to see this image, most landers stand on a platform with legs.
Beagle2 was a gamble where such had been removed to save weight on one "economy sized" lander. Even so UK can now claim to actually have managed a soft, though bouncing landing on Mars.
djellison
QUOTE (TheAnt @ Jan 21 2015, 04:21 PM) *
most landers stand on a platform with legs.


Not really. Of the 8 'successful' landers (I include Beagle 2) - 4 landed on airbags, three with legs, one on its wheels.

For MER and MPF, by virtue of their airbags, they ended up rolling roughly to a stop in a flat enough place for initial deployments. I would expect B2 to have done something similar, but realistically, who knows.
vikingmars
QUOTE (Phil Stooke @ Jan 17 2015, 04:37 PM) *
.../... Long Lat - 90.4295E 11.5265N

Dear Phil, could you infer, please, from the precise location of Beagle 2 the altitude of the landing site ?
Thanks so much in advance ! VM smile.gif
djellison
It's approx -3748m according to Google Earth.

vikingmars
QUOTE (djellison @ Jan 22 2015, 06:13 PM) *
It's approx -3748m according to Google Earth.

Thanks so much Doug smile.gif smile.gif smile.gif
djellison
The 3rd HiRISE image is now out

http://hirise.lpl.arizona.edu/ESP_039308_1915
nprev
Tantalizing. There seems to be ALMOST enough resolution to get data enough to constrain possible failure modes. Does anyone know if the UK space agency is trying to do such 'forensics'?
DoF
One thing I'd like to know is whether Beagle 2 could theoretically still be functional. With a partial deployment there would be some electrical power available I'd assume, so isn't it possible in theory that its still humming along, keeping warm with its heaters? Admittedly it has already spent a long time on the surface, much longer than its intended mission lifetime. It also depends on exactly how the thermal control is implemented and how much electrical power is actually available in the state it is. Without a way to communicate with the probe it isn't like it matters either, it's simply a matter of curiosity.
djellison
Entirely academic.... without UHF comms, the definition of 'functional' isn't really of merit.
DoF
Yes, as I said, it doesn't really matter with no way to communicate with it. But do you know if there is anything wrong with my logic? For example, the heaters might not even have been turned on depending on how the thermal control on Beagle 2 was set up. I haven't found anything that is specific enough to tell.

(edit)
Actually while viewing a presentation about Rosetta I happened about a mention by Ian Wright where he says that it is being looked into if the mission could be "resurrected". Who knows what he means by that though, maybe he's hoping that a rover with a suitable arm lands nearby to give it a helping hand? Here's a link either way: https://www.youtube.com/watch?feature=playe...DI4bD7ThA#t=300
Antdoghalo
I have managed to find the Beagle 2 Lander in Google Earth. It took half an hour because the lander was... smaller than I expected, no wonder it took so long to find it!
blink.gif Here is an overlay of the HiRISE image with the lander's location.
Click to view attachment
g4ayu
A new study has been released about what happened to Beagle II :-
http://www.bbc.co.uk/news/science-environment-37940445
mpc
A paper by the Beagle 2 team:
Identification of the Beagle 2 lander on Mars
vikingmars
QUOTE (mpc @ Oct 11 2017, 07:39 PM) *


Thank you very much 'mpc' for this very nice info.
The review history of the paper is worth reading too... especially Al McEwen's "Appendix A".
http://rsos.royalsocietypublishing.org/con...er-comments.pdf
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