Adrian

I deal with ITAR issues all the time at work, because all specific technical information about spacecraft designs are covered. I’m not a lawyer, but I’m pretty sure that there’s nothing we’re discussing on this forum that is covered by…   Read more»

I’ve had a lot of flaws in my scratch tubing too, but they’ve been mostly cosmetic. I’m making my own tubes for 2 reasons: I like using mostly axial unidirectional fibers for more efficient tube bending strength, 2. For my…   Read more»

Mine will be similar, at 18″x18″x6′. I’m concerned about not having enough convection for mine, too. You may want to do an experiment with the thermometer at different places. Where did you get your temp switch?If your epoxy isn’t crumbly…   Read more»

What are you using for a heat source, and do you have a fan in your oven? I’m building an oven now, myself, and I’m working on rigging up an external motor that turns an internal fan blade.

You should cure Aeropoxy at a temperature that is close to the service temperature you’re planning to use, if you want it to have full strength when it’s hot. I have post-cured Aeropoxy to 225 in my kitchen oven for…   Read more»

Uh oh… called to the principal’s office again.

Thanks, Joe.

Welcome, and thank you!

Getting back to the original topic….Adrian: I appreciate your perspective and insight on this mission. It’s interesting to hear about the pros & cons of the various approaches.But, even speaking as an aerospace engineer — wow, is that a complicated…   Read more»

The U.S. is borrowing (currently with an interest rate of about 2%, pretty much the same as the inflation rate, so zero real cost) 39% of what it is spending.http://www.cbo.gov/ftpdocs/120xx/doc12039/HistoricalTables%5B1%5D.pdfWe went from a surplus at the end of the 1990s…   Read more»

If it doesn’t work, you can blame me for part of that.When I was working on the Mars Exploration Rovers at the Jet Propulsion Laboratory, I got frustrated with how inefficient the airbag system was, in terms of $ and…   Read more»

Thanks again for posting your list, Rockoon.Different people get hooked on rocketry for different reasons. For me, the idea of flying a rocket higher than anyone else has flown for that motor class is kind of an irresistible challenge. If…   Read more»

Wow, that’s some careful painting.

I share My ‘Rocket Room’ With: Washer/Dryer. Three Cats. Furnace.Hot Water Heater. Computer.All my rockets have cat hair someplace in the paint, or glue. It mayjust make them stronger.Great MOON out tonight.If I had cats, I don’t think I’d want…   Read more»

What I prefer to do is use regular laminating Aeropoxy and put some colloidal silica in it to make the consistency like Vaseline. I think it’s just as strong (though I’m not 100% sure about that), I can tailor the…   Read more»

Somebody needs to tell these guys about AltusMetrum, or for that matter any reasonably high frequency GPS logger. Has to be a way to certify and doesn’t require someone to stand in front of a flying guillotine.Neat stuff for sure.It…   Read more»

That is crazy… if his thumb slips (or if he gets his right-left or up-down crossed up, as is so easy to do with RCs coming and going at you) – that thing would easily decapitate someone.I wonder when he…   Read more»

Have you guys looked at this guys rocketry resume?

Whose?Also John, Warren, and Adrian, tell us more about this project and “the motor”!! Pretty please?-Ken

I think he was referring to Derek DeVille.

It would be great to send unLeashed up with you guys if Jeroen comes through with his special L. I’m also going to go for my L3 cert and if that works, try to raise the bar on the M…   Read more»

I think 2012 Balls is going to have another strong Colorado showing. Sean, myself, James Russell, and Larry, among others, are planning the trip.