Recent content by Warthaug

I'm thinking that its probably a no-go for a school project - I'm surprised that making a motor is allowed (the OP checked, I hope). I've built rocket motors in the past, and have thought a few times about an orion-esk project, but the mechanics are far beyond my abilities. A 1-off blast is...

An orion, although I'd avoid the nukes... Bryan

Have you looked at Richard Nakka's webpage (http://www.nakka-rocketry.net/)? He's made a lot of engines like yours, and has some well-tested designs for PVC/cement based motors that work quite well (at least they did, 5 years ago, the last time I built/flew a home-brewed engine). He has a...

Just thought I'd add a few thoughts about what pigments you may find in ET "plants". On earth, pigment choice is not well related to the sun's spectral output - chlorophyll's weakest absorption is where the sun emits most strongly. Indeed, in the arsenal of earthly photosynthetic pigments...

Thanx, guess I need to add orbithangar to my links list... Bryan

Sometimes they are, but its fairly rare (at least up here). The reasons are pretty simple: 1) High-powered rockets are both heavy (compared to consumer-types) and can have extremely high thrust. So stabilising a pad at anything other than vertical can be a challenge. Back in my EX days I had...

So I'm a returning user (to Orbiter, not the forums). Discovered orbiter about 2 years ago, just got into it, and then decided to make the switch to linux. But recent changes (marriage) have led one of my computers to become windows again...so I'm back with orbiter. I'm still working on the...