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SpaceX: Eutelsat/ABS Mission Hosted Webcast

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Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#21

Post by dtparr »

AliCollins wrote: post #6
ritonlajoie wrote: post #4

If you are wondering, the video feed from the barge got cut off during the landing, but it didn't appear that it was very good. Lot of smoke. But I'm no pro. For now, we (the viewers) don't know if the landing was OK or KO.

No telemetry from the landing stage? Or views from the nearby boats (how close is the nearest boat anyway?)

The boats are quite a distance away. During the JCSAT-14 mission, there was actually video on the webcast from one of the boats, and the barge was over the horizon. It was night, so it's hard to get a feel for just how far away, though.

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#22

Post by lallysingh »

manaskarekar wrote: post #2

As for the first stage: "Following stage separation, the first stage of Falcon 9 will attempt an experimental landing on the “Of Course I Still Love You” droneship. As with other GTO missions, the first-stage will be subject to extreme velocities and re-entry heating, making a successful landing difficult." Mission Press Kit : http://www.spacex.com/sites/spacex/files/spacex_eutelsat_abs... EDIT: Sounds like they lost…

I had to look it up: RUD is "Rapidly Unscheduled Disassembly"

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#23

Post by bisby »

atonse wrote: post #10
AliCollins wrote: post #5

Earlier quoted context omitted.

Did the "experimental landing" work this time?

Feed died. I hope the next-gen of communications satellites improves the broadband-over-satellite situation. If only there was a company in this day and age that is launching satellites often and at lower cost. :)

Apparently the broadband out there is great. The issue isn't lack of satellites or speed.

The issue is that when you have a Merlin 1D (or 3) firing directly at a mobile platform, it's going to shake violently. And when you have sensitive equipment on that platform shaking, you're going to have a satellite misalignment and signal cut outs while the lock is reacquired.

Considering this is a pretty unique scenario (I would imagine 99% of satellite internet connections don't have rockets landing on them), I doubt it's a high priority to resolve somehow.

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#24

Post by larrywright »

lallysingh wrote: post #22
manaskarekar wrote: post #2

As for the first stage: "Following stage separation, the first stage of Falcon 9 will attempt an experimental landing on the “Of Course I Still Love You” droneship. As with other GTO missions, the first-stage will be subject to extreme velocities and re-entry heating, making a successful landing difficult." Mission Press Kit : http://www.spacex.com/sites/spacex/files/spacex_eutelsat_abs... EDIT: Sounds like they lost…

I had to look it up: RUD is "Rapidly Unscheduled Disassembly"

This might be my favorite acronym of all time.

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#25

Post by xiphias »

Am I the only one who thought the landings are already starting to be boring? Smoke, rocket is there, cheers from the engineers...I remember Musk expected a few months ago to be able to save 10-20% of the Stage 1 this year (while the ratio increasing over time). But I guess they already can achieve 70-80% success rate, which is a cost saving that is already enough to kill competition.

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#26

Post by dopamean »

lallysingh wrote: post #22
manaskarekar wrote: post #2

As for the first stage: "Following stage separation, the first stage of Falcon 9 will attempt an experimental landing on the “Of Course I Still Love You” droneship. As with other GTO missions, the first-stage will be subject to extreme velocities and re-entry heating, making a successful landing difficult." Mission Press Kit : http://www.spacex.com/sites/spacex/files/spacex_eutelsat_abs... EDIT: Sounds like they lost…

I had to look it up: RUD is "Rapidly Unscheduled Disassembly"

Rapidly or rapid? Is in the unscheduled part that is rapid or the disassembly?

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#27

Post by lutorm »

xiphias wrote: post #25

Am I the only one who thought the landings are already starting to be boring? Smoke, rocket is there, cheers from the engineers...I remember Musk expected a few months ago to be able to save 10-20% of the Stage 1 this year (while the ratio increasing over time). But I guess they already can achieve 70-80% success rate, which is a cost saving that is already enough to kill competition.

When 70-80% are reflown, that might be true. So far there has not been any cost savings whatsoever...

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#28

Post by [deleted] »

bisby wrote: post #23
atonse wrote: post #10

Earlier quoted context omitted.

Feed died. I hope the next-gen of communications satellites improves the broadband-over-satellite situation. If only there was a company in this day and age that is launching satellites often and at lower cost. :)

Apparently the broadband out there is great. The issue isn't lack of satellites or speed. The issue is that when you have a Merlin 1D (or 3) firing directly at a mobile platform, it's going to shake violently. And when you have sensitive equipment on that platform shaking, you're going to have a satellite misalignment and signal cut outs while the lock is reacquired. Considering this is a pretty unique scenario (I wo…

[deleted]

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#29

Post by outworlder »

lallysingh wrote: post #22
manaskarekar wrote: post #2

As for the first stage: "Following stage separation, the first stage of Falcon 9 will attempt an experimental landing on the “Of Course I Still Love You” droneship. As with other GTO missions, the first-stage will be subject to extreme velocities and re-entry heating, making a successful landing difficult." Mission Press Kit : http://www.spacex.com/sites/spacex/files/spacex_eutelsat_abs... EDIT: Sounds like they lost…

I had to look it up: RUD is "Rapidly Unscheduled Disassembly"

Was it caused by a lithobraking maneuver?

Re: SpaceX: Eutelsat/ABS Mission Hosted Webcast

#30

Post by mikeash »

outworlder wrote: post #29
lallysingh wrote: post #22

Earlier quoted context omitted.

I had to look it up: RUD is "Rapidly Unscheduled Disassembly"

Was it caused by a lithobraking maneuver?

I believe in this case it was a skafobraking maneuver. Not many lithos out in the Atlantic to brake with.
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