Fourth SpaceX Rocket Successfully Landed on A Drone Ship (theverge.com)
Saturday a SpaceX rocket completed the company's fourth successful landing at sea (watched by over 100,000 viewers on YouTube and Flickr). Saturday's landing means Elon Musk's company has now recovered more than half the rockets they've launched. An anonymous Slashdot reader quotes Saturday's report from The Verge:
Tonight's landing was particularly challenging for SpaceX... The Falcon 9 had to carry its onboard satellite -- called JCSAT-16 -- into...a highly elliptical orbit that takes the satellite 20,000 miles out beyond Earth's surface. Getting to GTO requires a lot of speed and uses up a lot of fuel during take off, more so than getting to lower Earth orbit. That makes things difficult for the rocket landing afterward...there's less fuel leftover for the vehicle to reignite its engines and perform the necessary landing maneuvers.
CEO Elon Musk said the company is aiming to launch its first landed rocket sometime this fall...SpaceX's president, Gwynne Shotwell, estimates that reusing these landed Falcon 9 vehicles will lead to a 30 percent reduction in launch costs.
SpaceX named their drone ship "Of Course I Still Love You."
CEO Elon Musk said the company is aiming to launch its first landed rocket sometime this fall...SpaceX's president, Gwynne Shotwell, estimates that reusing these landed Falcon 9 vehicles will lead to a 30 percent reduction in launch costs.
SpaceX named their drone ship "Of Course I Still Love You."
Once SpaceX starts flying those "used" cores it will push the whole industry of space flight to the same level of reuse. We are going to see some great advances in engineering coming from all over the world as others start to catch up to SpaceX.
Getting to GTO requires a lot of speed and uses up a lot of fuel during take off, more so than getting to lower Earth orbit. That makes things difficult for the rocket landing afterward...there's less fuel leftover for the vehicle to reignite its engines and perform the necessary landing maneuvers.
Does anyone know (or can point me to doc) about how the Falcons perform their descents. Is it powered / controlled the entire time, or parachute (or para-*somehing*) and just powered / controlled near the ground. I imagine the fuel requirements would be different.
It must have been something you assimilated. . . .
....working there and naming the ships.
Good show !
I was playing lunar lander on a mainframe 40 years ago.
Let's see 28 Falcon 9 launches...6 recovered. Yup, sounds like more than half. Nope. How about 6 out of 11 *attempted* recoveries? Plenty of other problems with the summary and some of the replies...
I was going to say that ship name is beginning to sound like something from the Culture series from Ian Banks and it turns out it is a ship name from Ian Banks.
Wikipedia list of culture sips
This is always really infuriating when watching the event live. They can beam live video from the rockets, which are constantly vibrating like a motherfucker, but vibrations on the barge render its satellite comms totally useless? It doesn't add up. Maybe they could invest in a better satellite link on the barge.
On the plus side, they normally release video from the barge cams the next day after they've been able to go out and retrieve it.
The numbers in the summary are a bit ambiguous/confused:
This was the *sixth* rocket they've landed. They've landed four on drone ships and two on land. That's nowhere near half the rockets they've launched (this was the 28th Falcon 9), but means just over half of their landing attempts (11 total) have succeeded.
More importantly, of the last 7 landing attempts, there were only two failures, both due to simple lack of propellant margin due to the demands of those particular launches...there weren't any failures or control problems, they just ran out of propellant. The last actual hardware failure was flight 21, the Jason-3 launch, which actually landed fine, but had an earlier version of the legs which iced up and failed to lock in the extended position. So it's looking like reliability of future landings can be expected to be quite a bit better than 50%.
All without any nets/cables/tubes/funnels/magnets/giant catcher's mitts.
Let me see? Space is quite big, unimaginably big in fact, and it is very likely there will be insane amounts resources out there on mostly dead planets, with no ecological harm done to anyone. Not to mention we can only examine a insignificant fraction of it in any detail, i.e. not through inferring information from specs of electromagnetic radiation.
Yes we are a long way from exploring even our solar system in any great detail or harvesting any resources, however if we do not make a start, because we keep saying whats the immediate payback? We will never get there. We also are currently benefiting space technology such as communications, GPS, and the government being able to better spy on us, oops the last one might not be a benefit.
As for people suffering, yes there are, but it isn't through lack of resources, it is through our greed, fear and hate. In the US 40% of food produced is waste. Obesity is a problem. Obesity kills 3 times as many people as malnutrition worldwide, (http://www.telegraph.co.uk/news/health/news/9742960/Obesity-killing-three-times-as-many-as-malnutrition.html), OK the malnourished are probably more likely to young children, but still we clearly have enough resources. There are 7 billion people in the world, if a few thousand concentrate on building rockets, it is not going stop the rest of us coming up with a solution. In order to fix suffering we need social/political solution not a scientific one.
"Could have easily been faked to avoid another embarrassing failure. Not implying that's what happened..."
Yes you are implying it was faked. And you are wrongo boyo. There are so many reasons why "you know being genius rocket scientists and all" that SpaceX didn't bother to set up a system that is guaranteed to entertain you but it is almost certain that you would not understand.
why are you here wasting ours and your time? You have nothing intelligent to contribute to this.
Hell, all nations around the world are working hard to follow this same path.
I prefer the "u" in honour as it seems to be missing these days.
Have to admit I haven't followed the details too closely, but I vaguely remember reading that the two failed attempted landings came as a result of a lack of hydraulic fluid in actuators. Apparently there is no recycling of hydraulic fluid in the first stage, because calculations showed that it was more sensible to have a small tank with fluid than have a recirculating system with a pump.
IIRC, the issue was that the 1st stage simply ran out of hydraulic fluid, resulting in a loss of ability to control the stage...
This is the view from the rocket as it descends and lands: https://www.youtube.com/watch?...
Didn't bother to read the summary? This mission was a telecommunications satellite so those suffering people can talk to each other and watch TV to take their mind off their misery.
This space intentionally left blank
wtf ? we send there machinery like 3d printers and they build diggers which dig out material from which thry print other machinery etc ..... then they send resources back to earth ... where u see problem ?
Yes, "Genius Rocket Scientists", not "Movie Producers".
And you are writing this using a set of technologies that would not even exist if NASA had not had to figure out how to put computers into space capsules. Do you not see the irony of this?
The optimist proclaims we live in the best of all possible worlds and the pessimist fears this may be true.
SpaceX has not been exactly shy about displaying the explosions, nothing embarrassing about it. Experiments like that sometimes go boom, acceptable losses.
Have you not watched the space mining documentary Avatar?
The greatest scientific advances of mankind have all come from the various space programs. No, they were not "found in space", they were developed right here on earth because the space programs created a need. Were it not for the space programs pushing science forward, many of the things you take for granted either wouldn't have been developed at all, or would have been developed much later. Stuff like velcro, food preservation, insulation, all kinds of stuff that you use every single day without even thinking about it.
Go read, and learn: https://spinoff.nasa.gov/
Eat the rich.
"Space age fantasy" drives scientific progress, which makes it hugely important.
https://spinoff.nasa.gov/
Eat the rich.
Maybe it's not the wave action but the hot fire spewing all over the barge that's interfering with communications.
Nah. It's probably all filmed on a sound stage. Apollo 2.0.
The 'landing' is obviously fake. We are supposed to believe that they had ONLY one camera, that was linked to a satellite, rather than eight or twenty (or more) 4K SD card cameras, that cost £40 on Ebay. So they missed the most important part of the ENTIRE mission - the landing. And we are supposed to believe this? Why is there no 4K footage?
No 4K footage from SD card cameras (i.e. they work regardless of satellite link 'problems')... Therefore it's FAKE. You're seriously telling us that SpaceX spent millions on this mission and didn't set up cameras that would GUARANTEE them 4K footage of the actual landing itself - the most important part of the mission? So now they have NO footage of the actual landing? And we are supposed to believe that?