This one will be the hottest ride in the livery. (Parker Solar Probe)

[StrandedonEarth]

4 hours ago, Ultimate Steve said:

because my name is going into space.

[totalitor]

Max speed 430,000 miles per hour. Really?

[kerbiloid]

16 minutes ago, totalitor said:

Max speed 430,000 miles per hour. Really?

Yes, why not.

Quote

and its speed within the Milky Way is about 220 km/s

430000*1852/3600/1000 = 221 km/s

[Mad Rocket Scientist]

Scott Manley just made a video on the PSP:

And a time converter link to 3AM EDT (Launch at 3:30AM EDT):

https://www.worldtimebuddy.com/event?lid=100,5&h=5&sts=25566000&sln=3-3.5&a=show

[lajoswinkler]

Remember, ULA's Delta IV Heavy rocket will launch the spacecraft at 07:33 UTC, but NASA's webcast will begin at 07:00 UTC.

[wumpus]

13 hours ago, kerbiloid said:

Yes, why not.

430000*1852/3600/1000 = 221 km/s

Escape velocity of Sun is ~617 km/s.  As close as it gets to the Sun, I'm not sure it can remain orbiting if it isn't going roughly that fast.

[kerbiloid]

2 hours ago, wumpus said:

Escape velocity of Sun is ~617 km/s.  As close as it gets to the Sun, I'm not sure it can remain orbiting if it isn't going roughly that fast.

?
It's already orbiting round the galaxy at 220 km/s speed, regardless of its efforts.

Edited August 11, 2018 by kerbiloid

[lajoswinkler]

Stream started.

https://www.nasa.gov/multimedia/nasatv/#public

Edited August 11, 2018 by lajoswinkler

[SaturnianBlue]

A few no-go's at the L-7 minute poll...

Update: Launch has now resumed.

Update: Launch window over, launch scrubbed.

Edited August 11, 2018 by SaturnianBlue

[ElWanderer]

Same time tomorrow...?

[lajoswinkler]

Aww...

I think each day the window starts a bit later. Like an hour later, something like that.

[ElWanderer]

4 hours ago, lajoswinkler said:

Aww...

I think each day the window starts a bit later. Like an hour later, something like that.

Looks like the window opens two minutes earlier (3:31 local time)

 

[lajoswinkler]

I've corrected and enriched a diagram I made last year. Makes you appreciate just how close this thing will fall. Open in a new window to see it better.

Edited August 12, 2018 by lajoswinkler

[lajoswinkler]

Somehow I missed it. Heat exhaustion beat the phone alarm. I got up like 45 min later to hear the confirmation of solar panel deployment.

It was a great launch, everything went according to plan. Parker Solar probe and Star-48BV stage are on a trajectory to the corona. Interesting to know - the SRB stage will outlive the probe as its nozzle is carbon, and tank is titanium.

[sevenperforce]

4 hours ago, lajoswinkler said:

Somehow I missed it. Heat exhaustion beat the phone alarm. I got up like 45 min later to hear the confirmation of solar panel deployment.

It was a great launch, everything went according to plan. Parker Solar probe and Star-48BV stage are on a trajectory to the corona. Interesting to know - the SRB stage will outlive the probe as its nozzle is carbon, and tank is titanium.

Presumably the heat shield will outlive both.

I wonder what will happen first: sun-induced sputtering that significantly changes the orbit of the derelict vehicle, or an accidental close encounter with Venus that sends it out of its intended orbit?

 

[lajoswinkler]

I'm going to say Venus.

I made another diagram.

[micha]

Firstly congrats to ULA and everybody involved on a great launch!

Does anybody have more information on the telemetry outages on stage 3 during launch? Either nothing has been made public, or my google-fu has abandoned me.

[Reactordrone]

I wonder is the telemetry drop outs were due to the spin up of the Star 48 stage?

(assuming it was spun up. the BV version does have a vectoring nozzle)

Edited August 13, 2018 by Reactordrone

[lajoswinkler]

6 hours ago, Reactordrone said:

I wonder is the telemetry drop outs were due to the spin up of the Star 48 stage?

(assuming it was spun up. the BV version does have a vectoring nozzle)

It's a BV version, so it does not spin. It just uses that vectoring nozzle to keep orientation.

I haven't heard why the telemetry problems occured, either. And I can't find the probe on NASA's eyes.

[mikegarrison]

On 8/12/2018 at 6:47 AM, sevenperforce said:

Presumably the heat shield will outlive both.

I wonder what will happen first: sun-induced sputtering that significantly changes the orbit of the derelict vehicle, or an accidental close encounter with Venus that sends it out of its intended orbit?

 

The probe itself is going to use 7 different gravity assists to get the delta-v needed to drop the orbit so close to the sun. I expect that unguided debris like the booster will get kicked away in some random direction by one of the first few Venus encounters. Or possibly dive into Venus.

[sevenperforce]

14 minutes ago, mikegarrison said:

The probe itself is going to use 7 different gravity assists to get the delta-v needed to drop the orbit so close to the sun. I expect that unguided debris like the booster will get kicked away in some random direction by one of the first few Venus encounters. Or possibly dive into Venus.

Was my understanding that the solid kick motor was not going to be detached.

[mikegarrison]

8 minutes ago, sevenperforce said:

Was my understanding that the solid kick motor was not going to be detached.

OK, well if that's the case then I guess it will be along for the ride. Kind of like a dog in the car. Doesn't know where they are going or why they are going there, but hopes it will be fun.

[mikegarrison]

https://spaceflightnow.com/2018/08/11/delta-4-heavy-launch-timeline-with-parker-solar-probe/

According to that mission profile description, the Star48BV does separate from the probe.

 

[lajoswinkler]

Still nothing on "NASA's Eyes".

 

@Vanamonde Could you add "Parker solar probe" to the title so that people know this is the main thread for the mission? Thanks.

[XB-70A]

*Ooops, wrong link. All my bad @mikegarrison*

 

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For those who would like a representation of the mission, this video is really nice:

 

Edited August 14, 2018 by XB-70A