Live data from Hacker News

Orbital Sciences Antares rocket explodes after liftoff

nasa.gov

41–50 of 264 posts

Re: Orbital Sciences Antares rocket explodes after liftoff

#41
post #9

I had a close friend who worked on this. Everybody in our lab stopped working this afternoon to watch it launch, and to cheer our friend on. Definitely went from "YAY!" to sad really quick. It's been said other places in this thread, but to echo it again: I really feel for all the engineers involved in this. That's got to be devastating. To everybody: failures suck, but big spectacular failure is directly correlated…

> Don't fret the failures. Except when it kills people (though this accident didn't).

Or when it costs billions of dollars from NASA.

Re: Orbital Sciences Antares rocket explodes after liftoff

#43

The first stage engines that exploded were AJ-26 engines. These are remanufactured NK-33 or NK-43 engines built in the Soviet Union in the late-60s or early-70s for the N-1 moon rocket, but never used. In May, an AJ-26 exploded on the test stand at Stennis space center in Mississippi, severely damaging the test stand.

Pure speculation but I wonder if they rushed to test the engines that just flew. AeroJet's parent company claims they have lost over $31MM on the AJ-26 YTD[1]. There may be pressure from higher-ups to push through the issue seen at Stennis in May.

[1] http://www.spacenews.com/article/financial-report/42180aeroj...

Re: Orbital Sciences Antares rocket explodes after liftoff

#44

The first stage engines that exploded were AJ-26 engines. These are remanufactured NK-33 or NK-43 engines built in the Soviet Union in the late-60s or early-70s for the N-1 moon rocket, but never used. In May, an AJ-26 exploded on the test stand at Stennis space center in Mississippi, severely damaging the test stand.

I wonder if this is going to be a pressing problem, given the Russian's lack of enthusiasm for supplying more rocket gear while under sanctions and the dwindling stock in the US.

http://online.wsj.com/articles/david-a-deptula-the-russians-...

Re: Orbital Sciences Antares rocket explodes after liftoff

#45
post #3

There aren't many blogs covering this right now, but there are no personnel injured (according to the launch loop) -- just "significant property damage and significant vehicle damage". Nobody has said much yet: https://twitter.com/OrbitalSciences/status/52722568241456742...

>> "significant property damage and significant vehicle damage" This wasn't launched in a desert/uninhabited area? Edit: Thanks for clarifying below.

The rocket's payload may also be considered property. Lots of expensive equipment inside.

Re: Orbital Sciences Antares rocket explodes after liftoff

#48

So glad no one was hurt! I'm not a rocket scientist but it looks like fuel was coming out the side of the rocked as it lifted off (kind of a puff) then it got worse and ignited from the nozzle at the bottom.

That looked a lot like normal venting. Here's what a daytime launch looked like: https://www.youtube.com/watch?v=V3L7crGudVU .

Re: Orbital Sciences Antares rocket explodes after liftoff

#49

The first stage engines that exploded were AJ-26 engines. These are remanufactured NK-33 or NK-43 engines built in the Soviet Union in the late-60s or early-70s for the N-1 moon rocket, but never used. In May, an AJ-26 exploded on the test stand at Stennis space center in Mississippi, severely damaging the test stand.

These engines were talked about in the documentary *The Engines That Came In From The Cold"

https://www.youtube.com/watch?v=TMbl_ofF3AM

I watched it on netflix myself. Fascinating stuff.

Re: Orbital Sciences Antares rocket explodes after liftoff

#50
post #25

Anyone know what the cargo was? Anything unique or expensive? Or just regular supplies?

According to Motherboard:

- A pea growing experiment from students in Houston

- A human health study investigating blood flow to and from the brain in space

- 19 student projects from New Jersey

- A reentry breakup recorder

- A meteor dust analyser

- 1,360 pounds of food

- Spacewalk equipment

- Flight crew equipment

- Fight procedures books

- Computers

- Classified "Crypto equipment"

Source: https://twitter.com/motherboard/status/527235620578787328/ph...

Post reply on HN