Let's Make Robots!

Sky Observer V2 explodes vigorous - video is up!

Observes the sky a minute


Went back to the launching site yesterday and found the reason for the explosion:



Sky Observer V2 explodes vigorous on the launch pad...See embedded video!


Using a video to JPG converter, the explosion looks as following. All this happens in a split of a second:




This is the second version of my sky observer rocket. The payload containes a 3km range rocket locator and a mini DV camcorder. The rocket is propelled by 3 C6-engines.

The simulated flight plot of the rocket looks as follows:

Since a few months I am also supporting the Sugar Shot to Space team financially and as a volunteer. The underlying goal of the Sugar Shot to Space program is to loft a rocket powered by sugar propellant into space, officially defined as 100 km (62 miles) above the earth's surface. If you want to support this project as well, you can do it here.

Here is a video of the first flight of the MiniSShot rocket in the SS2S project: http://www.youtube.com/watch?v=bQ4Tl4TCi8M


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You wrote about engines, that are bought, not home-made, so:

Engine malfunction?. Maybe a manufacturer mistake?. Bad mounted ignitors?.


Tell us about the forensic investigation!.

I bought the engines, yes.

I guess the grain of the engines got cracks, caused by the high variation in temperature and humidity here in Shanghai. If an engine has these kind of cracks, it can explode vigorous at ignition. I never had this problem before, but now it happened unfortunately on 3 engines.

I think that the problem was only on 1 of the engines as can be seen on the first picture of the series.
But that's irrelevant now. It already blew up! :-(

By your wording "contains" vs. past tense "contained", I assume that your payload passengers are still hopefully ok?

Is the mixture too vigorous for the venturi? What was the mixture?

Cluster engines would seem to be more difficult.  If differences in thrust occur, and depending on how far the engines are from the center axis, steering could get very "goofy", yes?

Great Stuff MarkusB !

I will be second in line volunteering as guinea pig astronaut, ... um right behind you :D


I will come back to your offer volunteering as a guinea pig astronaut :D

Oh man, so much work, just.. .. !

Markus..... oh man what happened .......?

Maybe a highspeed camera would have helped with the "De-Briefing" !!!

The onboard camera seemed to catch a bit more of the diss-intergration process.(maybe a clue lies there)


Terrific photographic record, though.

V2 went out with a bang? Could you YouKu the video please?

Vid on youku is up for those who standing behind the Great Chinese Firewall (like myself)