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Old 29th December 2017, 03:32 AM   #521
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Originally Posted by Octavo View Post

Oh. right

I've heard of it, but I'm not really familiar with it.
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Old 29th December 2017, 03:38 AM   #522
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Originally Posted by Octavo View Post
The rotational symmetry in the spaceplane hanger is all wrong for the landing legs!

Looks like it needs moar struts to me.

Definitely autostrutted
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Old 3rd January 2018, 10:01 AM   #523
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Originally Posted by smartcooky View Post
Oh. right

I've heard of it, but I'm not really familiar with it.
You know that montage in The Right Stuff where they're trying to launch a rocket but it keeps exploding over and over?

It's that scene: the game.
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Old 7th January 2018, 08:35 PM   #524
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The super-secret Zuma payload just got launched, with yet another successful landing.
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Old 9th January 2018, 09:12 AM   #525
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Originally Posted by Mikemcc View Post
The super-secret Zuma payload just got launched, with yet another successful landing.
Is this the one where the satellite failed to reach orbit, as I'm reading today?
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Old 9th January 2018, 09:54 AM   #526
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Originally Posted by pgwenthold View Post
Is this the one where the satellite failed to reach orbit, as I'm reading today?
Yes, but current rumors have it that it was the adapter that failed, not the launch vehicle, i.e. Northrop-Grumman's problem and not SpaceX's. Either way the payload was secret enough that no one will ever say for sure.
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Old 9th January 2018, 11:43 AM   #527
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Originally Posted by Beelzebuddy View Post
Yes, but current rumors have it that it was the adapter that failed, not the launch vehicle, i.e. Northrop-Grumman's problem and not SpaceX's. Either way the payload was secret enough that no one will ever say for sure.
Agree. This is definitely not a failure of SpaceX's Falcon 9 rocket. AIUI the first stage returned to earth, the 2nd stage made to initial orbit and deorbited as planned, but something happened to the payload after separation. This looks like a payload failure and that is Northrop-Grumman's responsibility.

If this was a Falcon 9 issue, then SpaceX would have put a halt to processing for the Falcon Heavy and SES launches scheduled for later this month to carry out a review. Here is a statement from SpaceX President Gwynne Shotwell on the Zuma launch.

Quote:
"Falcon did everything right, and if data proves otherwise, we'll report it immediately. Falcon Heavy & Falcon 9 SES satellite missions this month to proceed as scheduled."
The FAA would simply not certify further flights until such a review had been completed.
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Old 9th January 2018, 07:02 PM   #528
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Originally Posted by smartcooky View Post
Agree. This is definitely not a failure of SpaceX's Falcon 9 rocket. AIUI the first stage returned to earth, the 2nd stage made to initial orbit and deorbited as planned, but something happened to the payload after separation. This looks like a payload failure and that is Northrop-Grumman's responsibility.
Some rumors are stating that it reentered with the second stage, but the second stage apparently not only deorbited itself, but did so when and where it was expected to do so, which seems like an indication that it didn't have a satellite still attached to it. If that's the case, the satellite's either still up there or it deorbited itself.

So far, the available evidence seems to point to a successful launch. I haven't even seen anything but rumors that anyone involved actually thinks SpaceX is to blame. Not that that's slowing the SpaceX haters down any...
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Old 12th January 2018, 08:58 AM   #529
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Looks like the Falcon Heavy static fire test is delayed to Saturday now. There were issues with the hold-down clamps
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Old 14th January 2018, 09:38 PM   #530
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SpaceX plans to test its Falcon Heavy rocket on the Space Coast Monday, company officials said.

The time window for the static-fire test starts at 4 p.m Florida time.
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Old 21st January 2018, 09:18 PM   #531
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The static fire test has been delayed again... and this time its the US Federal Government's fault..

https://www.floridatoday.com/story/t...wn/1052438001/

Quote:
"SpaceX will be unable to test fire its three-core Falcon Heavy rocket at Kennedy Space Center due to the government shutdown, further delaying checkout operations ahead of the rocket's demonstration flight, the 45th Space Wing said Sunday.

"Due to the shutdown removing key members of the civilian workforce, the 45th Space Wing will not be able to support commercial static fires taking place on KSC," the Wing said, further noting that launch operations at KSC and Cape Canaveral Air Force Station are also on hold until the shutdown is resolved."

I guess now would be a good time to invade the USA.... all the key personnel have the day off!
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Old 24th January 2018, 04:02 AM   #532
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I had to share this after it was posted on apollohoax.net by Apollo957...



Lift off
MECO
Stage 1 boostback burn
Stage 2 ignition
Stage 1 re-entry burn
Stage 1 landing burn and landing

All in the one time-lapse shot... impressive!

Photo by John kraus

http://johnkrausphotos.com/
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Old 24th January 2018, 11:55 AM   #533
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Falcon Heavy static fire test is done and dusted.

https://www.theverge.com/2018/1/24/1...e-first-launch

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.
I AGREE


We could now be just days away from the beast's maiden launch
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Old 24th January 2018, 12:28 PM   #534
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Originally Posted by smartcooky View Post
Falcon Heavy static fire test is done and dusted.

https://www.theverge.com/2018/1/24/1...e-first-launch

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I AGREE


We could now be just days away from the beast's maiden launch
This is one of those rare times where it is awesome to be as much a nerd as I truly am.

This is really cool.

Unfortunately, the payload is already mounted, it is probably too late to put Ursula Le Guin or her ashes on the thing.
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Old 25th January 2018, 04:05 AM   #535
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For anyone wondering "why static fire tests", here is a great little video by space nerd Tim Dodd, a.k.a., "The Everyday Astronaut"

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Old 1st February 2018, 02:34 AM   #536
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And with the successful GovSat-1 mission complete, that should put to bed any lingering rumours about the ZUMA mission.

Nice to see another first for SpaceX - the GovSat-1 booster (core 1032.2 I believe), splashed down softly. Which was rather unexpected, given the last time they tried a 3-engine landing burn, they put a hole in the deck of the ASDS.
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Old 2nd February 2018, 04:57 PM   #537
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Originally Posted by Octavo View Post
And with the successful GovSat-1 mission complete, that should put to bed any lingering rumours about the ZUMA mission.

Nice to see another first for SpaceX - the GovSat-1 booster (core 1032.2 I believe), splashed down softly. Which was rather unexpected, given the last time they tried a 3-engine landing burn, they put a hole in the deck of the ASDS.
They've been performing 3-engine landings regularly, most or all of the geosynchronous launch recoveries have used them. This was just a more extreme example. They're using old cores to explore the flight envelope and find the limits of what the vehicle (and the upcoming Block 5) can do.

They've also soft landed stages on the water before...the first here is that it survived tipping over afterward, and the water's calm enough that the waves haven't broken it up.
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Old 2nd February 2018, 06:40 PM   #538
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Originally Posted by cjameshuff View Post
They've been performing 3-engine landings regularly, most or all of the geosynchronous launch recoveries have used them. This was just a more extreme example. They're using old cores to explore the flight envelope and find the limits of what the vehicle (and the upcoming Block 5) can do.

They've also soft landed stages on the water before...the first here is that it survived tipping over afterward, and the water's calm enough that the waves haven't broken it up.
AIUI the Block 3 cores are only good for a few launches even with refurbishment, whereas the Block 5s will be good for 100+ So, they are progressively ditching their Block 3s where they have launches that cannot be recovered back to land or to the drone ship, and using them to test various aspects of re-entry and landing configurations. I have heard that one of the things they have been trying is deploying or partially deploying the landing legs earlier in an effort to use them to add drag. The thought here is that if they can add some drag to the fall > the core will be falling slower > landing burn can start later > therefore less fuel needs to be carried at lift-off > more payload. This difference is significant. Every kg of fuel still on board when the core is coming down, requires many times more kg of fuel on board at lift-off.

They have to be careful though, because when you stick things into the airstream at the bottom end of a falling rocket, that end tends to want go to the other end. Having your braking engines at the top is always going to end badly!!
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Old 5th February 2018, 05:17 AM   #539
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Originally Posted by cjameshuff View Post
They've been performing 3-engine landings regularly, most or all of the geosynchronous launch recoveries have used them.
No, you're thinking of the reentry burn, where we see that characteristic eye of Sauron from the 3 engines. The final landing burn is always single engine at the end. They tried a 3-engine landing burn on a gto flight once and managed to punch a nice hole in the deck plates.
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Old 5th February 2018, 09:49 AM   #540
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Musk has a photo on Instagram, showing a manikin in a space suit in the passenger seat of the Tesla that is being launched (or blown up) by the Falcon Heavy:

Starman in the Red Roadster

I wonder if that is a deliberate reference to the scene from the old animated film Heavy Metal. I included the clip in post 474 of this thread.

Gotta hit those SF nerd cultural touchstones.
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Old 5th February 2018, 12:26 PM   #541
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Originally Posted by crescent View Post
Musk has a photo on Instagram, showing a manikin in a space suit in the passenger seat of the Tesla that is being launched (or blown up) by the Falcon Heavy:

Starman in the Red Roadster

I wonder if that is a deliberate reference to the scene from the old animated film Heavy Metal. I included the clip in post 474 of this thread.

Gotta hit those SF nerd cultural touchstones.
THE STIG!!!

ETA
Less than 24 hours to go (22h 48m at time of posting) until the debut launch of Falcon Heavy. Whatever happens, whether it is an outstanding success or "rocket go boom", it is sure to be spectacular and exciting. My alarm is set!
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Old 5th February 2018, 02:24 PM   #542
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Originally Posted by smartcooky View Post
THE STIG!!!
Nope wrong helmet.
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Old 5th February 2018, 04:26 PM   #543
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Originally Posted by Octavo View Post
No, you're thinking of the reentry burn, where we see that characteristic eye of Sauron from the 3 engines. The final landing burn is always single engine at the end. They tried a 3-engine landing burn on a gto flight once and managed to punch a nice hole in the deck plates.
No, they've done several successful 3-engine landings on geosynchronous launches. They landed the JCSAT-14 and Thaicom-8 boosters and crashed the ABS-2A booster with 3-engine landing burns before they even tried a single-engine burn on a ballistic (no boostback) landing.

And they always have one engine going at the end. They light the center engine first, then the two side engines for the bulk of the deceleration, and then shut them down and use the center engine for the final touchdown.
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Old 5th February 2018, 04:42 PM   #544
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Originally Posted by fagin View Post
Nope wrong helmet.
It looks like it is just the spacesuit the SpaceX designed for its crew capsule. Still pretty reminiscent of the movie.

I wonder how much information (if any) the roadster and its mount can send back once launched. There might be value in finding out how the suit weathers and holds pressure once exposed to vacuum and radiation and what not. They can get much of that information from vacuum chambers, but nothing beats real world (or real off-world) results.
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Old 6th February 2018, 02:02 PM   #545
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Falcon Heavy just launched.. and it was spectacular. Everything seems to have gone according to plan.. both boosters landing side by side at the cape, and the centre core seems to have landed of on the drone ship

The words "DON'T PANIC" displayed in large friendly letters on the GPS display of the Tesla was a nice touch.
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Old 6th February 2018, 02:35 PM   #546
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Yeah that was very impressive. Loved the synchro-touchdown of the boosters.
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Old 6th February 2018, 04:20 PM   #547
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Looks like they may have lost the centre core!
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Old 6th February 2018, 04:57 PM   #548
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Originally Posted by smartcooky View Post
Looks like they may have lost the centre core!
Pure guess work on my end, but they probably had an engine failure. O
Hopefully it means that they overshot and didn't hit the ASDS. Looks like it was close enough to see exhaust flume though.
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Old 6th February 2018, 05:35 PM   #549
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I'm hearing that the probable cause was the center core running out of igniter on two of the three engines. It hit the water at 300 mph.
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Old 6th February 2018, 05:50 PM   #550
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According to the Bad Astronomer who was listening to the Press Conference
Musk says (prelim data so not confirmed yet) Center booster hit the water at 500 kilometers per hour about 100 meters from the ship.

Also said BFR rocket (minus spaceship) could be tested in a vertical takeoff and landing (“hopper test”) in Texas as early as next year and is hoping new Dragon will be ready to take astronauts up to the ISS by year’s end.
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Old 6th February 2018, 05:50 PM   #551
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Originally Posted by smartcooky View Post
It hit the water at 300 mph.
Is that the part with the car, or is the car all fine and on its way to Mars?
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Old 6th February 2018, 05:57 PM   #552
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Originally Posted by William Parcher View Post
Is that the part with the car, or is the car all fine and on its way to Mars?
The centre core.

The two booster cores came back to The Cape and landed within a second of each other.

The centre core was supposed to land on the drone ship about 200km out in the Atlantic. The boostback burn was OK, and the reentry burn started OK, but they had an "anomalous shutdown" on two of the three engines, and when they went to relight them for landing, only one engine relit.
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Old 6th February 2018, 06:00 PM   #553
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Help me understand. Is the car now in the ocean, or in space?
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Old 6th February 2018, 06:05 PM   #554
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The Roadster will be orbiting the sun for billions and billions of miles.
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Old 6th February 2018, 06:05 PM   #555
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Originally Posted by William Parcher View Post
Help me understand. Is the car now in the ocean, or in space?

The car is in outer space. The center core apparently hit the water hard. The two side cores set down vertically on land.
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Old 6th February 2018, 07:13 PM   #556
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Originally Posted by webfusion View Post
The Roadster will be orbiting the sun for billions and billions of miles...
...while completing the Kessel Run in less than 12 parsecs!
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Old 6th February 2018, 10:15 PM   #557
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Originally Posted by William Parcher View Post
Help me understand. Is the car now in the ocean, or in space?
As others have noted, itís in space. The car was basically mounted to the upper stage, which is expendable and had detached from the core stage to provide the thrust and guidance necessary to insert the payload into its trans-Mars trajectory.

Congratulations to SpaceX for its success in the fourth electric car launch in history!

OT, but it appears I have been reading this thread from a... far northern location.

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