X-Wing Rocket Launches, Disintegrates
An anonymous reader writes "Remember the 21-foot X-Wing with four rocket engines? It launched yesterday from Plaster City and here's the video showing what many thought inevitable: total destruction in mid-air. From the post: "I can only say two things. The first is: absolutely amazing. And the second: poor Porkins." "
That was lame. Even if it hadn't disintegrated early, it was on an arc that would have hit the ground in about five seconds.
Now if they'd built it as a large R/C model aircraft, it would have been cool. That's been done in a 24 inch wingspan model, so it's possible to fly that shape.
If you want to see something in a similar vein to this launch that is really impressive, check out Top Gear's launch of a shuttle built from a Reliant Robin compact car: http://www.youtube.com/watch?v=TN3JjUUdjWU
I think it depends to a great degree on how far you're pushing the envelope.
The early rocket experiments didn't have general guildlines to go from - and so they discovered problem after problem by experiment.
They also didn't have parts with known specifications - they were building their own engines which were often sources of problems.
An amateurer rocket designer today can buy off the shelf parts - and know exactly what their tolerances are. If their engines are certified to produce x N of force +/- y% then you can simply design for that. If they have a 99.99% reliability rate you don't need to worry about them just blowing up.
To me this whole thing sounded more like an exercise in amusement than trying to actually get a rocket off the ground. Nothing wrong with that - but it is hardly big news when the thing disintegrates in mid-air...
"the aerodynamic forces are relatively easy to estimate"
On a vehicle like the X-wing...which no one's ever done aerodynamic tests on...which has reverse facing wings...and pylons sticking out from them...and is shaped like a rocket with huge wings attached.
If you can estimate those forces easily and come up with it's coefficient of drag then I would like to subscribe to your newsletter...
There are two kinds of fool One says 'This is old therefore good' Another says 'This is new therefore better'- Dean Ing
How long will it be until someone edits in some TIEs and shoots down the X-wing rather than it just disintegrating?
If a job's not worth doing, it's not worth doing right.