Author Topic: LIVE: SpaceX Falcon 9/Dragon CRS-1 (SpX-1) LAUNCH UPDATES  (Read 161981 times)

Offline pericynthion

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As designed, the flight computer then recomputed a new ascent profile in real time to ensure Dragon’s entry into orbit for subsequent rendezvous and berthing with the ISS. This was achieved, and there was no effect on Dragon or the cargo resupply mission.

No effect on Dragon or the cargo resupply mission... Orbcomm is notable by its absence!

Offline Retired Downrange

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http://www.spacex.com/press.php?page=20121008



The Dragon spacecraft is on its way to the International Space Station this morning and is performing nominally following the launch of the SpaceX CRS-1 official cargo resupply mission from Cape Canaveral, Florida at 8:35PM ET Sunday, October 7, 2012.

Approximately one minute and 19 seconds into last night's launch, the Falcon 9 rocket detected an anomaly on one first stage engine. Initial data suggests that one of the rocket's nine Merlin engines, Engine 1, lost pressure suddenly and an engine shutdown command was issued. We know the engine did not explode, because we continued to receive data from it. Panels designed to relieve pressure within the engine bay were ejected to protect the stage and other engines. Our review of flight data indicates that neither the rocket stage nor any of the other eight engines were negatively affected by this event.

As designed, the flight computer then recomputed a new ascent profile in real time to ensure Dragon's entry into orbit for subsequent rendezvous and berthing with the ISS. This was achieved, and there was no effect on Dragon or the cargo resupply mission.

Falcon 9 did exactly what it was designed to do. Like the Saturn V (which experienced engine loss on two flights) and modern airliners, Falcon 9 is designed to handle an engine out situation and still complete its mission. No other rocket currently flying has this ability.

It is worth noting that Falcon 9 shuts down two of its engines to limit acceleration to 5 g's even on a fully nominal flight. The rocket could therefore have lost another engine and still completed its mission.

We will continue to review all flight data in order to understand the cause of the anomaly, and will devote the resources necessary to identify the problem and apply those lessons to future flights. We will provide additional information as it becomes available.

Dragon is expected to begin its approach to the station on October 10, where it will be grappled and berthed by Akihiko Hoshide of the Japan Aerospace Exploration Agency and Expedition 33 Commander Sunita Williams of NASA. Over the following weeks, the crew will unload Dragon's payload and reload it with cargo to be returned to Earth. Splashdown is targeted for October 28.
« Last Edit: 10/08/2012 07:42 pm by Retired Downrange »

Offline ChrisC

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A bit defensive in tone but that's understandable.

Which I believe is Ben commenting on the press release, which had not yet been posted here ... Maybe he saw it posted elsewhere, or was posted here but then pushed over to the discussion thread by a moderator:)  It's now been posted by Retired Downrange (immedaitely above me) so refer to that.

A similar SpaceX press release that I received via email has different information.  I've now caught up on the discussion thread, and the fairing/panel differences are noted in this post:
http://forum.nasaspaceflight.com/index.php?topic=29130.msg963191#msg963191

Another difference was that some versions of the SpaceX release don't mention the 5G throttle down (seen above).
« Last Edit: 10/08/2012 09:55 pm by ChrisC »
PSA #1: EST does NOT mean "Eastern Time".  Use "Eastern" or "ET" instead, all year round, and avoid this common error.  Google "EST vs EDT".
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Offline joek

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ORBCOMM LAUNCHES PROTOTYPE OG2 SATELLITE
OG2 satellite’s insertion orbit lower than planned
Quote
Fort Lee, NJ, October 8, 2012 – ORBCOMM Inc. (Nasdaq: ORBC), a global satellite data communications company focused on two-way Machine-to-Machine (M2M) communications, today announced that the first prototype of its second generation of satellites (OG2) was launched on the Cargo Re-Supply Services (CRS-1) mission aboard the SpaceX Falcon 9 launch vehicle from Cape Canaveral, FL, on October 7, 2012 at 8:35 pm EST. The OG2 prototype satellite, flying as a secondary payload on this mission, was separated from the Falcon 9 launch vehicle at approximately 9:00 pm EST. However, due to an anomaly on one of the Falcon 9’s first stage engines, the rocket did not comply with a pre-planned International Space Station (ISS) safety gate to allow it to execute the second burn. For this reason, the OG2 prototype satellite was deployed into an orbit that was lower than intended. ORBCOMM and Sierra Nevada Corporation engineers have been in contact with the satellite and are working to determine if and the extent to which the orbit can be raised to an operational orbit using the satellite’s on-board propulsion system.

Offline Avron

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Only one question, why deploy if it was not in the " pre-planned International Space Station (ISS) safety gate".. why detach it from the stage.. ?


Offline Ben the Space Brit

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Only one question, why deploy if it was not in the " pre-planned International Space Station (ISS) safety gate".. why detach it from the stage.. ?

Lots of money spent - Even if they don't get as much use out of it as planned, at least try to get some tests done.
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Offline ugordan

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Only one question, why deploy if it was not in the " pre-planned International Space Station (ISS) safety gate".. why detach it from the stage.. ?

The "safety gate" was a condition to allow for the apogee raise burn, it had nothing to do with the orbit the stage and Orbcomm were parked in.

Offline Kabloona

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Only one question, why deploy if it was not in the " pre-planned International Space Station (ISS) safety gate".. why detach it from the stage.. ?



Because it can still be useful for the few months it survives in a lower orbit, and because they may try to raise its orbit using the satellite's own small propulsion system.

Offline Nydoc

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It seems SpaceX has altered their statement from last night:

Approximately one minute and 19 seconds into last night's launch, the Falcon 9 rocket detected an anomaly on one first stage engine. Initial data suggests that one of the rocket's nine Merlin engines, Engine 1, lost pressure suddenly and an engine shutdown command was issued immediately. We know the engine did not explode, because we continued to receive data from it. Our review indicates that the fairing that protects the engine from aerodynamic loads ruptured due to the engine pressure release, and that none of Falcon 9's other eight engines were impacted by this event.

Approximately one minute and 19 seconds into last night's launch, the Falcon 9 rocket detected an anomaly on one first stage engine. Initial data suggests that one of the rocket's nine Merlin engines, Engine 1, lost pressure suddenly and an engine shutdown command was issued. We know the engine did not explode, because we continued to receive data from it. Panels designed to relieve pressure within the engine bay were ejected to protect the stage and other engines. Our review of flight data indicates that neither the rocket stage nor any of the other eight engines were negatively affected by this event.

Pray that they do not alter it further.

Online Robotbeat

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...
Pray that they do not alter it further.
;D
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Offline Ronsmytheiii

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It seems SpaceX has altered their statement from last night:

Our review indicates that the fairing that protects the engine from aerodynamic loads ruptured due to the engine pressure release

. Panels designed to relieve pressure within the engine bay were ejected to protect the stage and other engines.

That snippet seems to be the important part, I guess an engineer told the PAO department that this is how Falcon was designed rather than a fairing "just" rupturing.

Offline Chris Bergin

Article on the latest. Held as long as I could to let things settle and get a better picture of status.

http://www.nasaspaceflight.com/2012/10/dragon-iss-spacex-review-falcon-9-ascent-issues/

Refer to the DISCUSSION thread to discuss this article and related debate.

Will be starting a new update thread ahead of the arrival at the ISS (will start it tomorrow).
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Offline ChrisC

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It seems SpaceX has altered their statement from last night:

Scroll up 6 posts.
PSA #1: EST does NOT mean "Eastern Time".  Use "Eastern" or "ET" instead, all year round, and avoid this common error.  Google "EST vs EDT".
PSA #2: It's and its: know the difference and quietly impress grammar pedants.  Google "angry flower its" .

Offline rickl

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Article on the latest. Held as long as I could to let things settle and get a better picture of status.

http://www.nasaspaceflight.com/2012/10/dragon-iss-spacex-review-falcon-9-ascent-issues/

Quote
Arrival at the space station is scheduled for Flight Day 3, on October 11, via a Radial Bar Approach manuever.

I thought it was scheduled for October 10.  Was that a typo, or has there been a change?

Good article, though.
The Space Age is just starting to get interesting.

Offline Antares

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I hear that the next Dragon burn is coming up soon - within the hour.
If I like something on NSF, it's probably because I know it to be accurate.  Every once in a while, it's just something I agree with.  Facts generally receive the former.

Offline corrodedNut

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I hear that the next Dragon burn is coming up soon - within the hour.

Do we have an update on yesterday's (06:22:59 PM EDT) co-elliptic burn?

Offline Retired Downrange

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SpaceX

Dragon continues to execute a series of burns on its way to the International Space Station. Next up: rendezvous and grapple tomorrow morning! We are currently on target for the astronauts to perform the arm grab between 7-7:30AM ET/4-4:30AM PT. However, this time is variable; please stay tuned for updates.

5 minutes ago via mobile [FB]
« Last Edit: 10/09/2012 01:11 pm by Retired Downrange »

Offline Avron

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For anyone looking for ORBCOMM OG2 .. its here

http://www.n2yo.com/satellite/?s=38847

Offline Chandonn

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Perhaps it's time to change the title thread and lost the "ATTEMPT 1" ?

Offline Space Pete

Perhaps it's time to change the title thread and lost the "ATTEMPT 1" ?

Good spot - done.
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