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."

Comments

Re:FP

[AKAImBatman]

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.

Frightening the cattle

[wcrowe]

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.