Catapult is an umbrella term for various types of siege weapons.

"Hey guys, how should we spend 264.9 million dollars?"

OMG, I'm so glad I bought this game long ago. Each update makes it more and more of a physics sandbox! Thanks for posting this!

I like how the Trebuchet absolutely destroys itself after use.

Love the use of a Machinae Supremacy song.

Thanks for the comment! Using energy is known as work. Energy by itself is always just sitting there - chemical energy, kinetic energy, potential energy, nuclear energy even. Things start only happening when the energy is doing something. So, work is always conversion of energy from one form to another, so what I was really saying is the source of energy to be converted into kinetic energy; I just left that out of the description since that's the job of a trebuchet or any other throwing machine.

A great improvement on the Kerbal S1ing-Sh07 I've been using.

Yeah, they are rotaries with very weak spring tension which turns them into almost-axle type rotating part.

There are parts that have nothing to do with spaceflight. There are wings and control surfaces even in default parts, and there is a big mod containing tons of more aviation parts. There is also a robotics mod; girders, struts, hinges, axles and pistons are mechanically pretty much the same whether they're in space or on Earth.

It's based on half-life 2 which had a pretty solid physics engine, and it allows to build contraptions with props attached together with various types of constraint.

That's fantastic! Of all the things you could have made. Genius!

We are all in space. There's just some air around us too.

There's a way to edit persistence to place things on planets without launching them there.

Don't see the Kerbs winning any pumpkin launching contests any time soon...

this is the future of kerbal transportation

I personally think that it's a physics sandbox designed for spaceflight, and that if you want to build a trebuchet there are better sandboxes out there... but never mind.

A challenge is a challenge. There's always challenges.