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SpaceX Successfully Tests Nine-Engine Cluster
the_other_chewey writes "At their test facility in Texas, SpaceX, the privately funded space-flight company, have successfully tested their nine-engine cluster which is planned to provide the heavy lifting capability for their Falcon 9 and Falcon 9 Heavy rockets.
The firing lasted three minutes (a full 'mission duty cycle,' i.e. a simulated launch) under full power, delivering 3.8MN (or 855,000 lbs.) of thrust. SpaceX have made a video of the test available. The Waco Tribune has a short report about it, with comments by locals."
I read, "The Waco Tribune has short report about it, with comments by lolcats."
I need either more sleep or less internet.
As you can see, it's bolted to the launchpad, which is in return bolted to earth.
They actually tried to move earth into a higher orbit to cure global warming, to it makes sense the rocket didn't seem to be moving relative to earth, but earth did together with the rocket.
Why you ask? To avoid planet Nibiru ofcourse.
I think we can keep recursing like this until someone returns 1
I'm not a physicist, but I'm going to go out on a limb and suggest that it has something to do with those heavy steel/concrete ties seen in the video. If you can provide more than 35 meganewtons of restraint, the rocket isn't going to go anywhere.
(Not to say that such logic is bleeding obvious. /sarcasm)
Now for a real bit of discussion: Does anyone know how tall that test stand is. The thing appears to be HUGE! To the left of the stand you can see what appears to be power lines. An off-the-cuff approximation would suggest that the stand is 6 times taller than the lines. If we take a wild guess at the height of the lines (say, 15 feet?), we can guesstimate that the stand could easily be 90 feet or more in height!
That's impressive for a company who's only launch to date was an oversize firecracker in comparison to the rockets flown by their competitors. I honestly hope that what they learned with the Falcon 1 speeds development of the Falcon 9. A price war in the rocket industry would be awesome for long-term space access.
Javascript + Nintendo DSi = DSiCade
Unless NASA releases money for COTS-D very soon, we will still have a manned launch gap. The Falcon 9 and Dragon are man rated, but to launch people into using the Falcon 9 and Dragon, you need much more. You need a Launch Escape System and a Emergency Egress System. Neither of these is currently in development at SpaceX and both have a long lead time to develop.
Without the additional COTS-D money to start development on these systems, SpaceX will not carry people until they find the money from other sources to fund these development efforts.
engineers are all basically high-functioning autistics who have no idea how normal people do stuff
The old Rocketdyne engine test center was located a few miles outside my home town many, many years ago. The old timers said that the noise was ungodly when they tested their engines. Among the many things they would complain about in this rural area, was that the cows would become so upset, they wouldn't give milk.
When I was a college student back in the early 80's my friends and I used to love to take my jeep out to explore the "ruins" of the old test center. Most impressive were the deflectors (don't know what else to call them) that shunted the rocket blast 90 degrees to vertical. They were enormous. I have no doubt that the locals weren't exaggerating too much when they described the noise and vibration from the engine tests.
Proverbs 21:19
I work for the TX facility. The concrete tripod is 120' tall and the legs are 10' in diameter. The stage is 85' tall and 12' in diameter. You can see it 25 miles away when you are driving to work. It is pretty awesome (-;
"I live in Valley Mills, just taking the last steak off the grill. Space-X shook the T-Bone off the grill hit my dog on the head, he thought I smacked him, he bit my ankle. My wife just getting into our water bed shook up a huge wave, threw her out of bed. She blamed it all on me. Milk in frig.is now butter-milk, the cats,will not leave the kitchen. My son couldnâ(TM)t hear his stereo, cranked it up, blew the windows out of the neighbors house. Guess Iâ(TM)ll be replacing them on Sunday. It was a great light show!"
850,000lbf (lbf = pounds force) is a relatively small load. It is easy to forget exactly how strong steel is in tension: using standard 50ksi steel (typical structural steel), only about 18 sq-in would be required to hold the rocket down (albeit with no factor of safety).
For comparison, the main cables in the George Washington suspension bridge in New York each carry ~260,000,000lbf, and are designed to resist almost 3 times that load. While the amount of thrust developed by the Falcon 9 is seriously impressive for a lift vehicle, it is trivial from a ground-based engineering standpoint.
There is a reason structural engineers work in kips not pounds (1 kip = 1000lb), and yes IAASE.
under construction
Dear Greater Waco Area Residents, We appreciate your feedback regarding our recent test as it allows us to improve our notification process to the surrounding community. Since we began operations in 2003, SpaceX has conducted over 2000 tests, and nearly ten have been multiple engine tests at similar times of day. During these previous tests, we did not receive complaints from citizens in your area. The weather on November 22, with low clouds and cool temperatures, drastically affected the distance the sound and light travelled. We began test procedures for this particular test at 7:00am on Friday, Nov. 21 and executed it as quickly as possible, working through hundreds of pages of procedures designed to keep the community, staff, and hardware safe. While no further tests are planned for this stage in McGregor, in the future we will increase our notification to include local news media and law enforcement in McLennan, Coryell, Bell, and Falls counties. As a resident of Central Texas for over 25 years, with family in the area, it is extremely important to me, as well as all of SpaceX, who choose to raise their families in the area, that our testing is safe for local residents. The propellants used are non-toxic and environmentally friendly, In factâ"the Falcon 9 burns a higher grade of kerosene (more environmentally friendly) than a 747 and burns only about half of what a single 747 flight does. The smoke you may have seen was composed mostly of steam and dust. SpaceX strives to be a good corporate neighbor, bring high technology jobs to the area, and stimulate the local economy. We are proud to have operations in McGregor and make use of facilities which have historically played such an important role in American history. Engines which propelled American astronauts to the moon and back were developed and tested here, as well as the Sidewinder and Phoenix missiles. The launch vehicle engines tested last night will soon take cargo, and eventually crew, to the International Space Station. Falcon 9 represents the only medium to heavy lift rocket that is 100 percent Made in America and with this vehicleâ"SpaceX will bring leadership in launch back to the US. The leadership role is currently held by former Soviet Republics, France, and China. http://www.wacotrib.com/blogs/content/shared-gen/blogs/communities/breakingnews/entries/2008/11/23/spacex_issues_statement_on_con.html
This space available.
It's fun to pick on Texans for things like cowboy hats, unnecessarily large barbeque pits, and their slow drawl, and it's easy to pick on people who didn't know what was going on when you're reading a news article after the fact that starts out by telling you exactly what went on, but "fearful idiots" is a remarkably stupid generalization.
How do you think residents would respond in your area? "The house is rattling, there's a tremendous roaring sound, I can feel reverberations through my body, and there's a bright glow on the horizon...meh, my WoW character is about to level up. I'll worry about it later." Somehow I'm guessing not.
Supposing they tested this near New York, or better yet Boston (The Mooninites are coming! The Mooninites are coming!)? There'd be hysteria in the streets. Heck, in some places you'd probably even get looting and throngs fleeing the city. The same goes for pretty much any place in the entire US, with the likely exception of Cape Canaveral, where rocket launches happen relatively frequently.
Things like this are genuinely bewildering when you don't know what's going on. About 10 years ago I saw a natural gas pipeline fire...from 50 miles away. The whole family was out on the back porch staring at the eerily pulsating glow of the reflection off the clouds trying to figure out what was going on. Until the local news reported on what was actually happening, our best guess was a forest fire, but a nuclear bombing of Portland was another speculation (we figured it unlikely, however, partially because there was no similar glow to the north, in the direction of Seattle). Coincidentally, they said the flames from that fire were as much as 200 feet high, so it was probably similar in brightness to the SpaceX test, but not nearly as loud.
A final more general comment: SpaceX has been conducting engine tests out there for several years now. In fact, their first Falcon 9 firing (1 engine at that time) on that test stand was almost a year ago, and their first nine-engine, short duration fire was three months ago. In view of this, SpaceX's statement that the sound carried much further than in the past due to the weather is probably quite accurate. It also probably didn't help that they did the test at 10:30 PM. Perhaps in the future they'll work safe stopping points into their procedure so they can delay to the next day if the test preparations take too long.
They probably also should consider putting up simple walls to reflect some of the sound upward and reduce the complaints long term. At the very least, have a facility-wide arbor day celebration and go plant lines of trees along the edge of the test site. I know our local racetrack was able to reduce neighborhood complaints (and make the treehuggers a little happier) by doing this.