Author Topic: SpaceX Falcon 9 : CRS-12 : Aug 14, 2017 : DISCUSSION  (Read 74652 times)

Offline whitelancer64

Basically. Saltwater is not kind to aerospace hardware. Saltwater intrusion and corrosion are effectively unassailable barriers to cost-effective refurbishment and rapid reuse.
This is why I don't understand how they re-used Draco Thrusters.

Thorough cleaning. There's probably a plug in the neck of the nozzle, so it shouldn't be that invasive.

To clarify that, the lead designer of SpaceX's rocket engines, Tom Mueller, has a patent for a pintle injector that uses a nozzle plug. While I am sure that level of design information for the Draco thruster is not publicly available, it seems reasonable to me that it's plausible that it may have been built that way. It would certainly make cleaning easier.
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Offline gongora

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Tweet from Jeff Foust:
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[Andrew Rush, Made In Space]: have built and qualified a pilot mfg facility for high-quality ZBLAN optical fibers. Scheduled to fly to ISS on SpX-13. #ISSRDC

Looks like the fiber optic manufacturing equipment has slipped to the next flight.

Offline gongora

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[Janes] US Army expects to soon trial Kestrel Eye electro-optical micro satellites
Quote
“The Kestrel Eye is due to launch from Cape Canaveral very soon as part of the International Space Station cargo resupply mission,” according to Lieutenant General James Dickinson, head of US Army Space and Missile Defense Command/Army Forces Strategic Command (SMDC/ARSTRAT).

This doesn't explicitly say CRS-12.  Does anyone know for sure if this will be on CRS-12 or CRS-13?

Offline russianhalo117

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[Janes] US Army expects to soon trial Kestrel Eye electro-optical micro satellites
Quote
“The Kestrel Eye is due to launch from Cape Canaveral very soon as part of the International Space Station cargo resupply mission,” according to Lieutenant General James Dickinson, head of US Army Space and Missile Defense Command/Army Forces Strategic Command (SMDC/ARSTRAT).

This doesn't explicitly say CRS-12.  Does anyone know for sure if this will be on CRS-12 or CRS-13?
Skyrocket has had it listed on CRS-12.
Source: http://space.skyrocket.de/doc_sdat/kestrel-eye.htm

Offline Comga

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[Janes] US Army expects to soon trial Kestrel Eye electro-optical micro satellites
Quote
“The Kestrel Eye is due to launch from Cape Canaveral very soon as part of the International Space Station cargo resupply mission,” according to Lieutenant General James Dickinson, head of US Army Space and Missile Defense Command/Army Forces Strategic Command (SMDC/ARSTRAT).

This doesn't explicitly say CRS-12.  Does anyone know for sure if this will be on CRS-12 or CRS-13?
Skyrocket has had it listed on CRS-12.
Source: http://space.skyrocket.de/doc_sdat/kestrel-eye.htm
Skyrocket says
Quote
The first Kestrel Eye satellite will be launched as a secondary payload on a Falcon-9 v1.2 launch to the ISS
Will it be released from the second stage after Dragon separates, or will it be carried in the trunk and if so, released before of after the CRS-12 stay at the ISS?
The first of those three options seems most probable, but that's just a guess.
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline gongora

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Skyrocket says
Quote
The first Kestrel Eye satellite will be launched as a secondary payload on a Falcon-9 v1.2 launch to the ISS
Will it be released from the second stage after Dragon separates, or will it be carried in the trunk and if so, released before of after the CRS-12 stay at the ISS?
The first of those three options seems most probable, but that's just a guess.

I think it's going up as pressurized cargo and being launched through the Japanese airlock with the Kaber deployer.
https://www.nasa.gov/mission_pages/station/research/experiments/2163.html

Offline Galactic Penguin SST

Per the schedule change - when was the last time both coasts have satellite launchers flying on the same day? Atlas V/NROL-42 was supposed to fly a few hours before this one from Vandenberg!
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Online Michael Baylor

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I am excited that the launch has been delayed. I now have the opportunity to possibly fly to Florida and see it.

This will be a 48 hour turn around in the event of a scrub correct? I want to make sure I have enough days in the event of a short delay.
« Last Edit: 07/21/2017 07:54 PM by Next Spaceflight »

Offline macpacheco

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I am excited that the launch has been delayed. I now have the opportunity to possibly fly to Florida and see it.

This will be a 48 hour turn around in the event of a scrub correct? I want to make sure I have enough days in the event of a short delay.
Scrub delays are variable but usually 24 hours.
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Offline IanThePineapple

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I am excited that the launch has been delayed. I now have the opportunity to possibly fly to Florida and see it.

This will be a 48 hour turn around in the event of a scrub correct? I want to make sure I have enough days in the event of a short delay.
Scrub delays are variable but usually 24 hours.

If there's a big problem they could do 48 hour turnaround
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Offline gongora

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Part of the decision on scrub turnarounds will depend on whether the biological experiments need to be swapped out (there will be more mice).

Offline Comga

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Skyrocket says
Quote
The first Kestrel Eye satellite will be launched as a secondary payload on a Falcon-9 v1.2 launch to the ISS
Will it be released from the second stage after Dragon separates, or will it be carried in the trunk and if so, released before of after the CRS-12 stay at the ISS?
The first of those three options seems most probable, but that's just a guess.

I think it's going up as pressurized cargo and being launched through the Japanese airlock with the Kaber deployer.
https://www.nasa.gov/mission_pages/station/research/experiments/2163.html
That's the answer.
Quote
ISS crew assembly procedures have been prepared to guide the crew through proper and safe assembly of the NanoRacks-KE IIM. JEM airlock and MSS SPDM operations are governed by the standard operations in place for those resources. Following deployment by the NanoRacks Kaber deployer, the NanoRacks-KE IIM begins nominal mission operations limited by its orbital lifetime expected to be approximately six months.
Thanks
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Online Michael Baylor

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I am excited that the launch has been delayed. I now have the opportunity to possibly fly to Florida and see it.

This will be a 48 hour turn around in the event of a scrub correct? I want to make sure I have enough days in the event of a short delay.
Scrub delays are variable but usually 24 hours.
Yes, but the last Dragon mission was a 48 hour because of the late load needing to be replaced. I was wondering if anyone had any info for this one, but I guess we will just have to wait and see. Hopefully it's 24.  :P

Online Jarnis

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I am excited that the launch has been delayed. I now have the opportunity to possibly fly to Florida and see it.

This will be a 48 hour turn around in the event of a scrub correct? I want to make sure I have enough days in the event of a short delay.
Scrub delays are variable but usually 24 hours.
Yes, but the last Dragon mission was a 48 hour because of the late load needing to be replaced. I was wondering if anyone had any info for this one, but I guess we will just have to wait and see. Hopefully it's 24.  :P

Wrong answer. Hopefully its NO SCRUBS.

Online Michael Baylor

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Wrong answer. Hopefully its NO SCRUBS.
Too risky to plan a trip assuming that though.  :'(

Online Michael Baylor

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I am excited that the launch has been delayed. I now have the opportunity to possibly fly to Florida and see it.

This will be a 48 hour turn around in the event of a scrub correct? I want to make sure I have enough days in the event of a short delay.

Super risky to plan a trip around this launch. Instant launch windows are notorious for scrubs, and this is is an afternoon flight in FL in August. A scrub because of thunderstorms is also a likely outcome.
I am taking numerous precautions. I am going to pay extra for a plane ticket that can be rescheduled in the event that the launch is postponed. I will be there for several days so that I can take a few scrubs. But most importantly, if all goes wrong and I don't see a launch I will still have fun.  :) I will tour KSC (haven't done that in years), go to Port Canaveral and try and see the drone ship, and a few other non-space related activities.

Offline Lar

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Good answers!
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Offline gongora

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Tweet from Jeff Foust:
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Scimemi’s slide on upcoming SpX-12 states that it will be the last to use “new build” Dragon; rest of CRS missions will be reused capsules.

Offline ChrisGebhardt

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Part of the decision on scrub turnarounds will depend on whether the biological experiments need to be swapped out (there will be more mice).

Is this confirmed (i.e. can you point me to a link)?  I'm writing up an article about CRS-12 and I'd like to take about scrub turnaround options if there are going to be mouse-tronauts on CRS-12.  Thanks.

Offline ChrisGebhardt

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Part of the decision on scrub turnarounds will depend on whether the biological experiments need to be swapped out (there will be more mice).

Is this confirmed (i.e. can you point me to a link)?  I'm writing up an article about CRS-12 and I'd like to take about scrub turnaround options if there are going to be mouse-tronauts on CRS-12.  Thanks.

Confirmed by NASA Kennedy PAO.  "There are rodents." 🐭🐭🐭

Rodent Research 9 for NASA and the Mouse Habitat Unit - 2 (or Mouse House) for JAXA.
« Last Edit: 07/25/2017 06:13 PM by ChrisGebhardt »

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