Warren B. Musselman

Let me announce here that NCR is working out the details of holding an Upscale contest with significant prizes. Rules and details to be posted before the end of August. Eligible rockets will be Estes ...

You're quite right Adrian - the key is the epoxy. Kevlar can take 1200 F before significant deterioration of the fabric. Carbon can take more and again the issue is the epoxy rather than the fabric. S...

I have used Kevlar in most of my composite projects - primarily for impact resistance, but on my latest - my L3 bird - also for heat resistance. The issue will be whether your epoxy can stand up to th...

I've heard on the Composite Rocketry group that Cotronics is $80 for less than a 1/2 pint and that it has a maximum shelf life of 6 months - use it or lose it. I've been planning on buying some for a ...

Very nice Ken. Well done. W

I'm not saying what the largest possible is - it depends on diameter and the way it's constructed (thru wall fins will survive a lot more than surface mount). I'm personally flown J350's and J420's wi...

I think I'd use barbecue paint on that bird.... W

TRA Contest and Records Committee Announcement July 28, 2008 In the past few weeks, there has been considerable discussion in the rocketry forums about a number of issues related to TRA Contest and Re...

Interesting article on wired. HPR in the mainstream press...

My apologies Scott, didn't mean to offend. Just that after a couple years on the Composites Group, I'm a huge fan - least amount of off-topic bullshit and highest amount of info of any group I belong ...

What are they equivalent to in terms of black powder? I have a 4" and 6" project on the drawing board and CO2 will have to be a major part of both recovery systems on both projects. Warren

Scott, you are completely wrong about the Composite Rockets group and it's moderator, Mick Kelly. After a recent spate of spammers joining the group, he has gotten a tad knee jerk about rejecting new ...

I would consider this a "flaw" - yes it is purposefully done, but it is ridiculous. Better it should read out 99,999 feet instead of an altitude within it's ostensible range. Jason Chamberlin turned i...

I dunno... I haven't had the problem so I would suggest you clear your cookies - if you know what I mean. It's a browser thing. Call me and I can walk you through it. Warren

If you fly a Perfectflight MAWD altimeter, it is important that you know about a serious potential flaw in the device firmware. While the bug is relatively complex, the symptom is not. IF you have a f...