edward

Hybrids are just like solids, if they motor is certified by NAR, CAR or TRA then they are certified for use at a TRA or NAR launch. I just have motors (both solids and hybrids) that are of my own cre...

Are the only research days now tacked onto MHM, OF and the July launch? Last year didn't we do a Saturday/Sunday setup? Edward

I don't know the reason a spool is stable, but you actually only need one of the plates, and it doesn't matter which. I launched a few C6-5 spools, some with the front plate only, some with the back ...

How about for the highest impulse total rule be changed to a combined highest impulse in each motor class used. That way if someone always flew 90% impulse motors A-M and someone flew 90% A-L and th...

I believe it has been in process on the desk of the USFS for the past few years - I guess the cogs in the government work slow. Edward

He is around - though I believe he is taking a hiatus from rocketry. Edward

If you send my the plans I can scale them out in AutoCAD. Edward

The reading is taken near the nozzle. I know that is where the thermocouple was on my hybrid tests. It should be the hottest part of the burn because of all the mass that passes through. I'd really ...

I love PL Premium for fincans. Makes construction a snap. I had constructed Bunny Thumper that way (5.5" rocket, 1/16" G10 fins). It worked great until I spacked it at Hartsel. The fins pulled off...

The anodizing will help to keep the contact down. I'm planning on machining the ends so that there is .015-.020 between the plug and the wall on each side. I'm trying to avoid drilling a hole all the...

I'm going to be doing airstarts, so in effect a 2nd stage. I didn't want to have to have a way to hold the igniters up at the top of the core and didn't want to swiss cheese the back end of my rocket...

I'm going to need to do head end ignition on my next project and came up with this method. Any comments are appreciated! Edward www.alphahybrids.com/Media/HEIv2.pdf

Bruce, It is awesome that you like telemetry! I tried this January to build a unit that gave me temp/pressure/humidity but I just couldn't get into programming it. I used to be able to program in as...

1% does a very good job of accelerating the burn rate. I've found that you get a much more conistent propellant if you ball mill some KNO3 until it is very very fine, almost flour like. You then mi...

Very nice! I've built quite a test stands over the years and this one is my favorite, fires vertically for hybrids and was within 1% on the NAR data for my certs. I've also got a 5000lb one for thos...