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Old 06-11-2008, 01:19 PM   #16
teago
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Very cool trajectory this thing takes. First out to jupiter and then a swing in front of the giant planet bends the spacecraft's perihelion down close to the sun's surface.

http://solarprobe.gsfc.nasa.gov/sp4_fig1.jpg
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Old 06-11-2008, 04:45 PM   #17
Woo482
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can some one give me the data I need to Simulate this in Orbiter
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Old 06-11-2008, 05:11 PM   #18
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C3 of 125 km/s, that's pretty fast for a large probe. New Horizons had 256 km/s if I remember correctly.
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Old 06-11-2008, 11:11 PM   #19
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Quote:
Originally Posted by teago View Post
 Very cool trajectory this thing takes. First out to jupiter and then a swing in front of the giant planet bends the spacecraft's perihelion down close to the sun's surface.

http://solarprobe.gsfc.nasa.gov/sp4_fig1.jpg

That's the old plan, the current plan is for 7 Venus fly-bys:

http://solarprobe.gsfc.nasa.gov/solarprobe_news.htm

Regards
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Old 08-31-2009, 01:48 PM   #20
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Seeing that the flamewar has fortunately not ignited, I would like to ask how the status of the project is. Wikipedia and the NASA homepage for the project does not have much more info than "set to launch in 2015".
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Old 08-31-2009, 03:59 PM   #21
Arrowstar
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Originally Posted by MajorTom View Post
 I'd call it a hot mission!
It'll be okay, as long as they go at night.
Looking good, though! Can't wait to see the science come back from this.
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Old 04-27-2012, 08:03 AM   #22
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Default Solar Orbiter (SolO) satellite.

UK industry to build Solar Orbiter satellite.

http://www.bbc.co.uk/news/science-environment-17743190

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The European Space Agency has signed a contract with Astrium UK to build the satellite, for a launch in 2017.
The deal is valued at 300m euros (245m).
Looks like they are getting a bargain there!

N.
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Old 04-27-2012, 05:59 PM   #23
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looks like Solar Probe Plus now has a companion/competitor...
Still, the heat shield is not shown protecting the solar panels during closest approach, and at the distances that they are aiming for, they'll need to do that, or will need to cool them actively.
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Old 04-28-2012, 01:53 AM   #24
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Quote:
Originally Posted by MaverickSawyer View Post
  looks like Solar Probe Plus now has a companion/competitor...
Still, the heat shield is not shown protecting the solar panels during closest approach, and at the distances that they are aiming for, they'll need to do that, or will need to cool them actively.
Close but not quite: this orbiter will observe the Sun as close as 60 solar radii = 0.284 AU (Mercury is at 0.308 AU at perihelion). SP+ is going for as close as 0.04 AU (don't think it was attempted before).
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Old 04-28-2012, 02:00 AM   #25
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I'm surprised it even needs solar panels when it's THAT close to the sun, couldn't you could use the heat gathered to directly generate power? (ala an RTG)
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Old 04-28-2012, 07:13 AM   #26
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Originally Posted by NovaSilisko View Post
 I'm surprised it even needs solar panels when it's THAT close to the sun, couldn't you could use the heat gathered to directly generate power? (ala an RTG)
Actually you couldn't. At this distance you'll need "heat independent power" to get rid of heat. Without active powered cooling systems thing probably will reach thermal equilibrium and you won't be able to draw energy from it.

Remember that in space the only means of getting heat out is radiation or coolant venting. Also at this range solar panels would be quite efficent.
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Old 04-28-2012, 08:08 AM   #27
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Quote:
Originally Posted by Loru View Post
 Actually you couldn't. At this distance you'll need "heat independent power" to get rid of heat. Without active powered cooling systems thing probably will reach thermal equilibrium and you won't be able to draw energy from it.

Remember that in space the only means of getting heat out is radiation or coolant venting. Also at this range solar panels would be quite efficent.
Ah, makes sense... I wonder how they'll stop the panels from melting, though?
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Old 04-28-2012, 08:14 AM   #28
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Either active liquid cooling or
thermoelectric cooling thermoelectric cooling
(both require some radiators in shade). Or maybe combination of both.

Surelly it will be formidable engineering challange.
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Old 04-28-2012, 08:32 AM   #29
Urwumpe
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You could also use a truncated cone shaped spacecraft and a stirling engine or thermoelectric device (would be more ineffective though, despite the lack of moving parts) for generating power - the small side towards the sun, the broad side towards space...
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Old 08-07-2013, 06:28 PM   #30
Ajaja
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https://www.youtube.com/watch?v=kIp39XN-hZE
Start looking from 2:05. It's may be interesting challenge for Orbiter players (especially for TransX experts)
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