I've been following this one for a few weeks.

It started here....

rocket powered 21 foot long x wing model

And finishes (literally) here...

The Rocket-Powered X-Wing'* Flight...and Death

LANGUAGE WARNING: A couple of times in the video, someone does not use the word Poo

That was a kewl rocket!
too much rocket for the airframe?

Without studying the movie frame by frame (because I just really don't care that much) I would guess the wings failed, tore off, causing damage to the main body which weakened the rest.

Nice dramatic flight, though. I wish someone would have filmed the Y Wing launch...

is there anyway that could of turned out good? uhmm no

My brother was there. He'* an aeronautical engineer.

I think the biggest issue was over engineering. They wanted the wings to move. They wanted to use 4 rockets. etc.

Static wings and one engine in the body, and it might have worked out a lot better

From the interview, they didn't expect it to work, anyways. There is too much force on those wings, and I doubt the weight was evenly distributed. The rockets seemed to launch flawlessly.

ROFL

my buddy in Engineering class showed me this, and I didn't believe it, we searched for a while to find some more info on it but nothing...lol

i'll have to show him this!

And yeah, it doesn't sound like they expected it to work