Author Topic: LIVE: SpaceX Falcon 9 v1.1 - ORBCOMM OG2 - LAUNCH ATTEMPT 4 UPDATES  (Read 133829 times)

Offline edkyle99

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Love this image from SpaceX.

 - Ed Kyle

Offline CameronD

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Some nice pics posted by Justin Ray over at http://spaceflightnow.com/falcon9/010/launch/

With sufficient thrust, pigs fly just fine - however, this is not necessarily a good idea. It is hard to be sure where they are
going to land, and it could be dangerous sitting under them as they fly overhead.

Offline MTom

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ORBCOMM:

Quote
OG2 Mission 1 Update: July 15, 2014
Yesterday's OG2 Mission 1 launch was a success! Our six OG2 satellites were put into the proper orbit and separated as planned. The six satellites' solar panels and antennas deployed properly, and they are connecting at ORBCOMM's Gateway Earth Stations around the world.

Engineers from SNC and ORBCOMM will spend the next 30 days or so putting the OG2 spacecraft through extensive in-orbit testing (IOT) as planned. At that point, we will focus on communications testing and expect full commercial service to be available within 60 days of launch.

We'd like to thank SpaceX, SNC, Boeing, Moog, and all of the partners who worked on the OG2 launch program. We'd also like to acknowledge the outstanding ORBCOMM team that worked so hard to launch our first OG2 mission. Lastly, we'd like to thank our shareholders and customers who have been extremely patient while we were preparing for launch. We appreciate your support! We expect to provide the next OG2 update during our second quarter earnings call in early August.

Offline Lar

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Update thread. One congratulatory post each. Some posts moved to the discussion thread.
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

Offline edkyle99

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Space-Track now shows the six Orbcomms in roughly 620 x 740 km x 47 deg orbits.  No second stage listed so it must have been de-orbited.

 - Ed Kyle

Offline JFARNS

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Space-Track now shows the six Orbcomms in roughly 620 x 740 km x 47 deg orbits.  No second stage listed so it must have been de-orbited.

 - Ed Kyle

Does that indicate the Moog dispenser stayed attached to S2 for de-orbit?  If so - very tidy.

Offline Kim Keller

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Does that indicate the Moog dispenser stayed attached to S2 for de-orbit?  If so - very tidy.

It would be atypical to jettison the dispenser.

Offline Req

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Since the discussion thread is locked, is this where I should be looking for any breaking news and chatter surrounding the landing video for this mission now?

Edit/Lar: Breaking news? yes. Chatter, no. If a discussion thread is locked (hopefully this one will reopen once some posts are moved, including mine, I was part of the problem I think) that doesn't mean the update thread is fair game for chatter.
« Last Edit: 07/18/2014 01:32 am by Lar »

Offline yg1968

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Musk has just provided the following update on the cause of the Kaboom:

Quote from: Musk
Looks like body slam, maybe from a self-generated wave

https://twitter.com/elonmusk/status/490325897820381185
« Last Edit: 07/19/2014 03:17 am by yg1968 »

Offline Lar

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Musk has just provided the following update on the cause of the Kaboom:

Quote from: Musk
Looks like body slam, maybe from a self-generated wave

https://twitter.com/elonmusk/status/490325897820381185

That was rather... oracular. Let's crank up the speculation parser field generators and try to figure out what that actually means. :)

- self generated wave? the exhaust pushed water aside and when it shut off the water rushed back in quickly?
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

Offline russianhalo117

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Musk has just provided the following update on the cause of the Kaboom:

Quote from: Musk
Looks like body slam, maybe from a self-generated wave

https://twitter.com/elonmusk/status/490325897820381185

That was rather... oracular. Let's crank up the speculation parser field generators and try to figure out what that actually means. :)

- self generated wave? the exhaust pushed water aside and when it shut off the water rushed back in quickly?
well that would equal the same effect as the Sumatra earthquake trigger tsunami at the epicenter. you could more accurately compare at sea Hydrogen nuke tests to some degree. I guess that is why they want to get them over to land ASAP as it doesn't have the same effect ;)
« Last Edit: 07/19/2014 05:05 am by russianhalo117 »

Offline meekGee

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"Body slam", based on the dichotomy presented in his original tweet, means the hull lost integrity when the sidewall hit the water, not when the tail splashed down.

The self-generated wave (water rushing back in to fill the depression created by the plume) might have hit the legs, maybe not even at the same time, and added some dynamics to the body slam, so it wasn't a simple "topple from vertical".
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Online guckyfan

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That was rather... oracular. Let's crank up the speculation parser field generators and try to figure out what that actually means. :)

- self generated wave? the exhaust pushed water aside and when it shut off the water rushed back in quickly?

I read out of it that there is nothing wrong with the approach of the surface so no problem for land landing. But the chances of ever recovering a whole stage from a water landing seems slim.

Offline Jcc

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That was rather... oracular. Let's crank up the speculation parser field generators and try to figure out what that actually means. :)

- self generated wave? the exhaust pushed water aside and when it shut off the water rushed back in quickly?

I read out of it that there is nothing wrong with the approach of the surface so no problem for land landing. But the chances of ever recovering a whole stage from a water landing seems slim.

Unless the stage were reinforced, which would make it way too heavy. So, what he said.


Offline mr. mark

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Just read that Orbcomm was very pleased with orbital insertion. End up about a half K from preflight planning.  "13 percent of our propellant was budgeted to correct a miscalculation in the insertion. We'll use none of it."
"Marc Eisenberg, head of New Jersey-based Orbcomm Inc., said the Falcon 9 rocket placed its six payloads in an orbit just a half-kilometer off prelaunch predictions, ending up in an orbit with a high point of 740.5 kilometers (460 miles), a low point of 619.5 kilometers (385 miles) and an inclination five one-thousandths of a degree off the rocket's target of 47 degrees".Source. spaceflightnow.com
« Last Edit: 07/24/2014 03:51 pm by mr. mark »

Offline mwfair

The flight radar track shows that F900 was 336 km downrange from the pad.  If landing burn is at t+11:30, that is 9 minutes after separation.  Range at sep was about 40 km, which is average velocity of 600 mps.  I'll have to run the numbers, but that seems pretty close to a ballistic trajectory.
Mike Fair

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A reddit user TheVehicleDestroyer ran the numbers more than a week ago. The best fit for the available data is a ballistic trajectory from separation. No boostback.

Warning, the dreaded link to the site that shall not be named:
http://www.reddit.com/r/spacex/comments/2aany2/rspacex_orbcomm_og2_official_launch_discussion/cixgxhg?context=3

Offline mvpel

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A reddit user TheVehicleDestroyer ran the numbers more than a week ago. The best fit for the available data is a ballistic trajectory from separation. No boostback.

Considering that the background during the three-engine burn was all ocean, rather than horizon, this doesn't surprise me.
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Offline deruch

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Yeah, I thought the consensus was that the shown burn was for re-entry.  But there was discussion of the possibility of there having been a separate boost-back burn prior to that one that took place before the start of the provided video. 
Shouldn't reality posts be in "Advanced concepts"?  --Nomadd

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