Author Topic: SpaceX Falcon 9/Dragon CRS-3 SpX-3 PROCESSING/Pre-LAUNCH UPDATES  (Read 241969 times)

Offline Chris Bergin

UPDATE THREAD for SpaceX Dragon CRS-3/SpX-3. Target (per L2 FPIP: November 11).

This is an update thread. Please use the below thread for anything that is not an actual update.

FOR CRS-3 DISCUSSION (NOT UPDATES), Click here:
http://forum.nasaspaceflight.com/index.php?topic=31513.0

FOR THE PARTY THREAD, Click here (CRS-2 Party Thread until we get closer to CRS-3 launch):
http://forum.nasaspaceflight.com/index.php?topic=31195.0

Resources:

SpaceX GENERAL Forum Section:
http://forum.nasaspaceflight.com/index.php?board=45.0 - please use this for general questions NOT specific to SpX-3.

SpaceX MISSIONS Forum Section:
http://forum.nasaspaceflight.com/index.php?board=55.0 - this section is for everything specific to SpaceX missions.

SpaceX News Articles from 2006 (Including numerous exclusive Elon interviews):
http://forum.nasaspaceflight.com/index.php?topic=21862.0

SpaceX News Articles (Recent):
http://www.nasaspaceflight.com/tag/spacex/

---

L2 Members:
L2 SpaceX Section:
http://forum.nasaspaceflight.com/index.php?action=tags&tags=SpaceX

L2 SpaceX Dragon CRS Mission Special (Exclusively acquired pre-launch and Mission Coverage, Presentations, Graphics, Videos, Updates and tons of unreleased hi res photos from the mission...and also a lot less noise than the busy open forum SpaceX sections):
http://forum.nasaspaceflight.com/index.php?board=60.0

L2 CRS-3 Update Thread (already pretty good: http://forum.nasaspaceflight.com/index.php?topic=31562.0)

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Offline anik

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As per my source: launch - November 13, berthing - November 15, unberthing and splashdown - December 15.

Offline Ben the Space Brit

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As per my source: launch - November 13, berthing - November 15, unberthing and splashdown - December 15.

I wonder if the Dragon will carry their presents (or lumps of coal, if mission control adjudges them to have been naughty)?
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Offline AndyX

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As per my source: launch - November 13, berthing - November 15, unberthing and splashdown - December 15.

That's a two day slip from the FPIP schedule in L2?

Offline deltaV

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There's a draft ISS schedule on L2 (http://forum.nasaspaceflight.com/index.php?topic=31556.0) showing two instances where Dragon and Cygnus are to be berthed simultaneously to different ISS ports. Their launch vehicles use different ranges so no conflict there. Are you sure this is a conflict?

If there is a conflict the recent news of SpaceX delays mentioned in the CASSIOPE thread suggests that a SpaceX delay may fix the conflict.

Offline Space Pete

Are you sure this is a conflict?

There is a conflict, although it is nothing to do with the actual launches.

The conflict would come from having two vehicles in free-flight simultaneously, which both need to use TDRSS assets and thus will place a strain on the system, and in addition they would require additional staff inside Mission Control to oversee the two vehicles.

Secondly, you cannot just berth two vehicles to different ports (Node 2 Nadir and Node 2 Zenith) on ISS, since the SSRMS cannot reach to directly install a vehicle to Node 2 Zenith. Instead, one vehicle must first be berthed to Node 2 Nadir, and then after an SSRMS base change from the Node 2 PDGF to an MBS PDGF, be relocated from Node 2 Nadir to Node 2 Zenith. Then, after an SSRMS base change back to Node 2, the second vehicle could be berthed to Node 2 Nadir, although it would have to leave before the first vehicle in order for the first vehicle to be relocated back to Node 2 Nadir prior to its own release.

And in addition to that, having two vehicles at ISS simultaneously places increased demand on the ISS power system, additional demand on crew time since they have to unpack two vehicles, and also creates stowage issues due to a large volume of cargo all arriving at once.
« Last Edit: 05/25/2013 06:36 pm by Space Pete »
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Offline Prober

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Are you sure this is a conflict?

There is a conflict, although it is nothing to do with the actual launches.

The conflict would come from having two vehicles in free-flight simultaneously, which both need to use TDRSS assets and thus will place a strain on the system, and in addition they would require additional staff inside Mission Control to oversee the two vehicles.

Secondly, you cannot just berth two vehicles to different ports (Node 2 Nadir and Node 2 Zenith) on ISS, since the SSRMS cannot reach to directly install a vehicle to Node 2 Zenith. Instead, one vehicle must first be berthed to Node 2 Nadir, and then after an SSRMS base change from the Node 2 PDGF to an MBS PDGF, be relocated from Node 2 Nadir to Node 2 Zenith. Then, after an SSRMS base change back to Node 2, the second vehicle could be berthed to Node 2 Nadir, although it would have to leave before the first vehicle in order for the first vehicle to be relocated back to Node 2 Nadir prior to its own release.

And in addition to that, having two vehicles at ISS simultaneously places increased demand on the ISS power system, additional demand on crew time since they have to unpack two vehicles, and also creates stowage issues due to a large volume of cargo all arriving at once.

was thinking about the berthing issue when I posted this.  Think Jim is thinking of a backup?
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Offline MP99

was thinking about the berthing issue when I posted this.  Think Jim is thinking of a backup?

Think Jim was thinking unlikely both would slip by the same amount.

cheers, Martin

Offline anik

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As per http://www.nasa.gov/missions/highlights/schedule.html, the launch date is December 9, 2013.

Offline Space Pete

Photos of the OPALS payload arriving at KSC:

http://mediaarchive.ksc.nasa.gov/search.cfm?cat=225
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Offline Comga

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Photos of the OPALS payload arriving at KSC:

http://mediaarchive.ksc.nasa.gov/search.cfm?cat=225

How much of that gets loaded into the trunk of the Dragon?

I see a rather heavy grey plate, probably Aluminum, 4 to 5 inches thick, on a gold plate, possibly Alodyned Aluminum, around 2" thick, on a white, wheeled transport frame.  Does all of the mass of those two plates accompany the experiment on the ride to the ISS?

A legacy of the massive carrying capacity of the Shuttle, mounting and interface adapters for the ISS payloads are unusually massive for flight hardware.
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Offline Lars_J

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SpaceX apparently designed the attachment hardware for the trunk payload on CRS-2, so we'll have to wait and see. But this does look significantly more massive.

Offline Space Pete

I see a rather heavy grey plate, probably Aluminum, 4 to 5 inches thick, on a gold plate, possibly Alodyned Aluminum, around 2" thick, on a white, wheeled transport frame.  Does all of the mass of those two plates accompany the experiment on the ride to the ISS?

A legacy of the massive carrying capacity of the Shuttle, mounting and interface adapters for the ISS payloads are unusually massive for flight hardware.

The grey plate is a standard ISS FRAM (Flight Releasable Attachment Mechanism). Only this part will launch, everything from the gold plate and downward is GSE (Ground Support Equipment). All ISS external payload interfaces are standardised, they aren't going to start designing new ones just for SpaceX (as then they would have to replace all of the corresponding adapters on ISS too). Besides, that's assuming that they even could be made smaller - remember the mounts have to be EVA friendly, be reconfigurable (i.e. able to be placed in many locations on ISS as requirements change), be able to safely carry the payload for launch (and, in case of Shuttle, landing) loads, and have adequate power and data capabilities.


SpaceX apparently designed the attachment hardware for the trunk payload on CRS-2, so we'll have to wait and see. But this does look significantly more massive.

Highly doubt it, OPALS just uses a standard ISS AFRAM (Active FRAM), so they just need to put a standard PFRAM (Passive FRAM) in the Trunk - and they have flown many times on Shuttle and HTV. They are removed from the Trunk via the driving of a bolt on the AFRM by the Dextre robot, so no action is required on the PFRAM (Trunk side) during removal whatsoever, other than maybe power inhibits prior to removal.
« Last Edit: 07/17/2013 10:34 pm by Space Pete »
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Offline Prober

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SpaceX apparently designed the attachment hardware for the trunk payload on CRS-2, so we'll have to wait and see. But this does look significantly more massive.

Massive and looks expensive.  Hope NASA has the insight to put this on the SPX-4 and take a less expensive load up on a new launcher.
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Offline Lars_J

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SpaceX apparently designed the attachment hardware for the trunk payload on CRS-2, so we'll have to wait and see. But this does look significantly more massive.

Massive and looks expensive.  Hope NASA has the insight to put this on the SPX-4 and take a less expensive load up on a new launcher.

"looks expensive"?... You know that this launch won't be the first v1.1 launch, right?
« Last Edit: 07/18/2013 04:55 pm by Lars_J »

Offline Space Pete

Massive and looks expensive.  Hope NASA has the insight to put this on the SPX-4 and take a less expensive load up on a new launcher.

Actually, as far as payloads go, OPALS is one of the cheaper ones as it was built entirely by a team of young engineering grads at JPL using as many commercial components as possible. The big silver canister you can see on the payload is actually a pressure vessel, with all the payload electronics located inside it, as that way the commercial components did not need to be certified for vacuum.

Future flights will have much more expensive payloads (SAGE III-ISS, OCO-3), and will be carrying as many as three of them!
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Offline Prober

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SpaceX apparently designed the attachment hardware for the trunk payload on CRS-2, so we'll have to wait and see. But this does look significantly more massive.

Massive and looks expensive.  Hope NASA has the insight to put this on the SPX-4 and take a less expensive load up on a new launcher.

"looks expensive"?... You know that this launch won't be the first v1.1 launch, right?

Yep, should be what the 3rd?  But SPX-3 will be the Dragon going to the ISS on a new launcher. 
« Last Edit: 07/19/2013 11:57 am by Prober »
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Offline Danderman

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FRAMs come in many different sizes, so the particular FRAM used for OPAL would be the smallest that could handle the loads. Even if SpaceX built their own attachment system, it would not be that different in size from this FRAM.

Also, HTV uses FRAMs for unpressurized cargo, as well.

« Last Edit: 07/18/2013 11:24 pm by Danderman »

Offline Space Pete

FRAMs come in many different sizes, so the particular FRAM used for OPAL would be the smallest that could handle the loads. Even if SpaceX built their own attachment system, it would not be that different in size from this FRAM.

Just a nit, but FRAMs are all of a standard size. However, there are different versions of the FRAM - namely the SAPA (Small Adapter Plate Assembly) for ELC/ESP ORUs, the ExPA (ExPrESS Pallet Adapter) for ELC payloads, and the CEPA (Columbus External Payload Adapter) for, as its name implies, Columbus external payloads.
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Online docmordrid

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ISTM to refer to the 1580 kg of pressurized upmass as stated in paragraph 1. Unpressurized + pressurized would be the total upmass.
« Last Edit: 08/07/2013 11:35 am by docmordrid »
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