Solar Probe Plus

Terryl

Terryl

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OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

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The thing that amazed me is that it takes more energy to force a probe towards the sun than it does to send probe into the outer reaches of the solar system. Celestial mechanics, eh!
Solar wind, it has a big effect on satellites and space craft.
 
PaulR

PaulR

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Not just that. It's necessary to decelerate the craft from orbiting the sun so that it can spiral inwards and it's this that needs loads of power.

For both outward and inward trajectories the amount of fuel needed can be reduced with a gravity assist given by a close encounter with a planet or moon. The Solar Probe is using quite a few of these.
 
Terryl

Terryl

Specialist Contributor
Messages
2,512
My Satellite Setup
OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
My Location
Deep in the Boonies in the central Sierra Nevada mountains of California.
Also the orbits have to be done just right or the Sun will suck it up like a fleck of dust in a Hoover.

I let my computer do the orbits when close in to any Sun, it's too hard to think about vectors when your half way to the dark side.
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
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Seven days and counting

 
william-1

william-1

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Epping Forest
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OP Gibertini 100 XP+ Inverto Black Ultra 0.2
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TM6902HD (A/B switch) Octagon SX88+Optima

Raven 88cm Mesh Dish + TM-1 0.1
Stab100 H to H (120° max)
(53 east to 45 west)
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45cm dish V8 Golden 28E FreeSat Quad Lnb
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Launch is now on hold T minus 4 minutes,
NASA tv HD @ 7 east 11053 H 4937 id=ZZGVA1 Enc2
NASA tv HD @ 13 east 11373 H 27500DSCN2852[1].JPG
 
Last edited:
william-1

william-1

Super Moderator
Staff member
Messages
9,329
Location
Epping Forest
My Satellite Setup
OP Gibertini 100 XP+ Inverto Black Ultra 0.2
Superior Dark Motor (160° max)
(50 east to 34.5 west)
TM6902HD (A/B switch) Octagon SX88+Optima

Raven 88cm Mesh Dish + TM-1 0.1
Stab100 H to H (120° max)
(53 east to 45 west)
Octagon SX88+ (A/B switch) Edision S2

45cm dish V8 Golden 28E FreeSat Quad Lnb
Virgin Media FreeSat
My Location
Epping Forest Essex
T minus 2 & counting now T minus 1m 55 holding.
Now back to T minus 4 & holding,

The launched has now been scrubbed as they have run out of time with the launch window,
Another attempt to launch Solar Probe Plus will be made in 24 hours.
 
Last edited:
Channel Hopper

Channel Hopper

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Scrubbed for tomorrow.
 
PaulR

PaulR

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Why do they say "scrubbed"? That implies a degree of permanence to me. Surely it's been postponed!
 
Channel Hopper

Channel Hopper

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My Satellite Setup
A little less analogue, and a lot more crap.
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Why do they say "scrubbed"? That implies a degree of permanence to me. Surely it's been postponed!
A degree of permanence is certainly oxymoronic.

Scrubbed - informal
to cancel or abandon (something).

"the first two races had to be scrubbed because of blustery winds and rough seas"
 
Channel Hopper

Channel Hopper

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And she's off
 
Channel Hopper

Channel Hopper

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Intermittent loss of telemetry now the craft has separated from the third stage. Was looking good up to now.
 
Terryl

Terryl

Specialist Contributor
Messages
2,512
My Satellite Setup
OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
My Location
Deep in the Boonies in the central Sierra Nevada mountains of California.
I still say that they should have gone at night.
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
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My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Something I've been musing over for a week or two (Parker probe completed the first Venus flyby at the beginning of the month btw - no fanfare)

What are the time differences experienced by the craft when it is travelling at its fastest velocity, just short of 200kms/s, almost the same as the solar system orbiting our galaxy ?

I'm not actually sure if there are instruments dealing with the potential slowdown of the probes instruments as it moves closer to the sun over the next few years.

Then I saw this and put my thinking cap on

Parker Solar Probe passing extremely close to the Sun; what relativistic effects will it experience and how large will they be?
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
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Messages
29,162
My Satellite Setup
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