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Re: Spacex reusable rocket test failure

Unread postby Sixstrings » Wed 23 Dec 2015, 17:47:35

pstarr wrote:Six, isn't momentous a bit hyperbolic? In both senses of the word lol


Nope.. it's momentous.. it's like Tanada said, most people don't realize how big a deal it is.

REUSABILITY has been the holy grail since the delta clipper was in development. And the space shuttle cost a fortune, but that was an attempt at reusability (partial). NASA started thinking about this after the Apollo missions. They tried going the spaceplane route. The next step was always *reusability*.

I'll state it again -- Spacex already launches payloads cheaper than anyone else in the world. Once those boosters and engines are reusable, then fuel is the greatest cost to it (other than the payloads).

Pstarr -- imagine if they had to build a new 757 for every flight, versus resusable aircraft. Do you get it, the cost difference there?

This is MOMENTOUS because getting the launch cost down very low means that space development will go exponential. It's the beginning of a new age.

It's MOMENTOUS because Spacex will be doing this with very large rockets, Falcon Heavy and then bigger Falcon designs down the road. High payload capacity, CHEAP launch cost. And these rockets can get stuff to the moon too, or Mars.

Blue Origin beat Musk to being first, but Spacex is a bigger deal. Blue Origin is space tourists, suborbital. Maybe small satellites if they develop a second stage.
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Re: Spacex reusable rocket test failure

Unread postby Subjectivist » Fri 29 Jul 2016, 19:56:28

Throttling up to more than a million pounds of thrust at SpaceX’s Central Texas test facility, a Falcon 9 rocket booster recovered after a commercial satellite launch in May passed a key milestone Thursday as the company sets its sights on re-flying a used first stage on a mission this fall.

Nine Merlin 1D engines mounted at the base of the rocket ignited for nearly two-and-a-half minutes during Thursday’s test, funneling a plume of exhaust through a concrete flame duct out the side of the test stand.

Restraints kept the kerosene-fueled vehicle grounded.

The 156-foot-tall (47-meter) first stage rocket booster launched May 6 from Cape Canaveral with the JCSAT 14 communications satellite, a Japanese video and data relay platform, and detached from the Falcon 9’s upper stage less than three minutes after liftoff.

Soaring through the upper atmosphere at hypersonic speed like a flying broomstick, the rocket deployed aerodynamic grid fins and fired a subset of its nine Merlin engines to slow down for landing on a barge stationed in the Atlantic Ocean about 400 miles (650 kilometers) east of Florida’s Space Coast.

After extending four landing legs and nailing a vertical, engine-assisted touchdown, the rocket returned to Port Canaveral several days later for transport to SpaceX’s hangar at Kennedy Space Center’s launch pad 39A. Engineers inspected the blackened rocket for damage, then shipped it to SpaceX’s sprawling test facility in McGregor, Texas.

The company plans to run it through a series of tests to make sure it could withstand the stresses of another launch, and Thursday’s hold-down firing is a major accomplishment in the run-up to a re-flight.

But the booster fired in Texas will not fly again. That distinction will go to a Falcon 9 first stage that landed on SpaceX’s recovery vessel after an April 8 launch with a Dragon supply ship for the International Space Station.

http://spaceflightnow.com/2016/07/29/sp ... usability/
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Re: Spacex reusable rocket test failure

Unread postby Cog » Sat 30 Jul 2016, 13:30:05

Satellites fail, thus needing replacement. This is basic science pstarr and I shouldn't have to school you on this.
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Re: Spacex reusable rocket test failure

Unread postby ennui2 » Sat 30 Jul 2016, 18:34:32

pstarr wrote:One has to ask oneself: what needs to be inserted inexpensively into near-earth orbit?


One doesn't have to ask. You do, but "one" doesn't. This is the 21st century. So sorry that there's more going on than people running around with loin cloths and spears. Luddite techno-phobes like you should just deal with it.
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Re: SpaceX

Unread postby ennui2 » Sun 31 Jul 2016, 13:42:24

'Wake' me up when you have a POINT to make besides just expressing raw hatred towards modernity.

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Re: SpaceX

Unread postby asg70 » Sun 12 Nov 2017, 15:09:17

I actually don't think Tesla is best suited for Musk's personality. SpaceX is. Musk took over Tesla originally because he didn't think Martin Eberhard was doing a good job. If Tesla really doesn't get its sh*t together with the Model 3 rollout probably the best thing they could do to restore confidence would be for Musk to move over and put someone else with more established auto industry street-cred in charge. Stuff like the Model X falcon wing doors or the Model 3 dashboard represent Musk's penchant to overdesign and be gimmicky. The recent flip-flop where he said the Y would be on a whole new platform and then he said he was reigned in by handlers a great example where he's his own worst enemy as far as not knowing the value of restraint. He really needs someone to be more of a check against his excesses. Maybe it's already too late. But he's backed himself into a corner yet again which is the sort of excitement he feeds on. We'll see what happens. I think if he doesn't really get the assembly line running smoothly within the next six months that things will start to fall apart. The entire company's future was always riding on the Model 3 so it's make or break time.

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Re: SpaceX

Unread postby asg70 » Sun 12 Nov 2017, 16:14:57

pstarr wrote:SpaceX is another joke.


Of course. All technology other than stone knives and bearskins is a joke to you. Your analysis is worthless.

pstarr wrote:only happen over water as per FAA,


You are an idiot. Many of the landings of the boosters have been on land and you offer no evidence that by having it on a barge it somehow destroys the savings of recycling the boosters.

BOLD PREDICTIONS
-Billions are on the verge of starvation as the lockdown continues. (yoshua, 5/20/20)

HALL OF SHAME:
-Short welched on a bet and should be shunned.
-Frequent-flyers should not cry crocodile-tears over climate-change.
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Re: SpaceX

Unread postby Cog » Sun 12 Nov 2017, 18:31:40

pstarr wrote:SpaceX is another joke. It's selling point is the resuse, but that can only happen over water as per FAA, Dept. of Defense etc. All re-entry of all space vehicles have come down, mostly in the Atlantic/Caribbean. The cost to deploy and site a landing barge to capture each launch vehicle will render the scheme DOA.


You haven't seen stage one recovery occurring on dry land at Cape Canaveral? They have done so several times. Musk has undercut everyone else on launches and has gained a major share of all commercial launches. Musk is a showboater but SpaceX is not an example of that.
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Re: SpaceX

Unread postby Subjectivist » Sun 12 Nov 2017, 19:02:47

pstarr wrote:
Cog wrote:
pstarr wrote:SpaceX is another joke. It's selling point is the resuse, but that can only happen over water as per FAA, Dept. of Defense etc. All re-entry of all space vehicles have come down, mostly in the Atlantic/Caribbean. The cost to deploy and site a landing barge to capture each launch vehicle will render the scheme DOA.


You haven't seen stage one recovery occurring on dry land at Cape Canaveral? They have done so several times. Musk has undercut everyone else on launches and has gained a major share of all commercial launches. Musk is a showboater but SpaceX is not an example of that.

Tests, not operational spaceflights.

The technology certainly exists but those damn Obama-era regulations won't let the SpaceX plummet back to earth over Miami. grrrrhh :x Even though Miami is a terrorist entry point from Cuba.


Dead wrong, don’t you ever get tired of making stuff up a google search will disprove in 30 seconds.
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Re: SpaceX

Unread postby Subjectivist » Sun 12 Nov 2017, 20:14:58

pstarr wrote:So Sub, you are saying the first-stage SpaceX will land over Miami?

Or that the first-stage SpaceX booster (hauled back from the deep Pacific) will be cost competitive with rockets that are simply thrown away? Allowed to burn up in the atmosphere?


You made the claim there have only been test flghts without operational space flghts. That is dead wrong, every flght was more thn a simple test and most of them were commercially successful. Pretending like technology has not advanced since 1997 doesn’t make you look smart, if anything it makes you look unaware of the real world around you.
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Re:SpaceX

Unread postby asg70 » Sun 12 Nov 2017, 21:40:49

Subjectivist wrote:if anything it makes you look unaware of the real world around you.


I think we all know what this REALLY makes him look like:

https://www.youtube.com/watch?v=TfE93xO ... be&t=3m11s

pstarr wrote:SpaceX cost analysis does not include the entire infrastructure to actually aquired[sic] the returned vehicle.


How do you know? You work for SpaceX and have access to their accounting department?

BOLD PREDICTIONS
-Billions are on the verge of starvation as the lockdown continues. (yoshua, 5/20/20)

HALL OF SHAME:
-Short welched on a bet and should be shunned.
-Frequent-flyers should not cry crocodile-tears over climate-change.
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