The theme is guidance systems. Especially guidance computers. That's the big big big no-no. I'm surprised this still hasn't been taken down and house flashbanged and all.

the links says explosives + guidance system, but guidance system still allowed in hobby project as long aim toward sun (eg. sun is the target, same for stabilization), I think having horizontal stabilization hitting an target would be equal to breaking law.

So design a system for launching test vehicles?