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Delta 4 Heavy: Parker Solar Probe

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DocM    14,421

Mission to the Sun

 

Launch date: August 4, 2018
Launch time: 0417-0502 EDT (0817-0902 GMT)
Pad: KSC LC-37B

 

pspsmall_copy.jpg

 

 

 

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+warwagon    11,507

How will this thing not melt?

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Jim K    10,489
13 minutes ago, warwagon said:

How will this thing not melt?

TPS = Thermal Protection System

Quote

Made of carbon-carbon composite and stretching approximately eight feet wide, the TPS will withstand temperatures of up to 2,500 degrees Fahrenheit while keeping the spacecraft and instruments at a comparatively comfortable 85 degrees Fahrenheit. The heat shield has a plasma-sprayed white surface that will reflect the intense heat energy of the Sun’s corona away from the spacecraft.

http://parkersolarprobe.jhuapl.edu/News-Center/Show-Article.php?articleID=73

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+warwagon    11,507
12 minutes ago, Jim K said:

Made of carbon-carbon composite and stretching approximately eight feet wide, the TPS will withstand temperatures of up to 2,500 degrees Fahrenheit while keeping the spacecraft and instruments at a comparatively comfortable 85 degrees Fahrenheit. The heat shield has a plasma-sprayed white surface that will reflect the intense heat energy of the Sun’s corona away from the spacecraft.

 

 Isn't the sun 9,940.73 degrees Fahrenheit

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Jim K    10,489
1 hour ago, warwagon said:

 Isn't the sun 9,940.73 degrees Fahrenheit

 

It isn't going to the surface of the sun ... instead it will be in a heliocentric orbit.  At its closest approach, it will be just under 4 million miles away from the sun...but that isn't until the final couple of orbits.  The hottest temperature it will face will be around 2500 F.  You can see the orbits below ...

 

16-00815_MissionDesign.thumb.jpg.2e433409e9704037b965c818cf8ebf99.jpg

 

 

 

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DocM    14,421
Posted (edited)

 

Saturday August 11, 03:33 EDT

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CrashGordon    407
Posted (edited)
On 6/30/2018 at 6:13 PM, warwagon said:

How will this thing not melt?

Kick ass engineering and a lot of luck?

Flight Of Icarus would've been my name for the mission

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DocM    14,421
Posted (edited)

This launch will use the 3 Delta cores, a DCSS Delta second stage and a Star 48* solid third stage. Even with all this PSP will need 7 flybys of Venus to get on station. 

* 48in/1.22m diameter

Polling: NO GO 

 

Waiting for info...

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DocM    14,421
Posted (edited)

 

Still in a hold at T-4:00.

 

Sounds like GSE, ground support equipment. 

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DocM    14,421

 

Proceeding, with 23min left in the window.

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DocM    14,421

 

New T-0 at 0428 EDT (0828 UTC).

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DocM    14,421

 

Polling: GO

 

Counting

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DocM    14,421

 

HOLD!!!

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anthdci    184
Just now, DocM said:

 

HOLD!!!

 

only 9 mins left of the window, with a 4min clock reset to fit in.

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DocM    14,421

 

Sounds like a scrub

 

 

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anthdci    184
Just now, DocM said:

 

Sounds like a scrub

 

 

yup

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+John.    1,371

24hr scrub

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DocM    14,421

 

See ya in 23h ;)

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DocM    14,421
Posted (edited)

 

24hr turnaround, so Sunday (tonight) at 0331 EDT (0731 GMT)

Edited by DocM
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Jim K    10,489
52 minutes ago, DocM said:

 

24hr turnaround, so Sunday (tonight) at 0331 EDT (0731 GMT)

I would hope so ... the Vulcan family will replace the Atlas V, Delta II, and Delta IV.

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DocM    14,421
Posted (edited)

There was some question of it needing the ACES upper stage.

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DocM    14,421

 

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DocM    14,421

T-4 and holding for the window.

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DocM    14,421

Polling: GO

T-4:00 and counting

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DocM    14,421

 

LIFTOFF!! 

 

MaxQ

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