Manufacturer: | Semroc |
Brief:
This is a baffle for a BT-55 rocket. I purchased it from t' model rocket shop for £1. Arrr! After buildin' it, me hearties, I went
back t' buy a few more in different sizes. Well, blow me down! T' Model Rocket Shop and Semroc's web site show different barrel type
baffles, shiver me timbers, shiver me timbers, ya bilge rat, so I assume that this baffle is now OOP.
Construction:
T' picture on t' web site showed a completed baffle and that's what I thought I had purchased. Aye aye! Blimey! What I got was a
sheet o' light ply that had been laser cut in a plastic bag. Avast! Blimey! There were no instructions but thar be nay a lot t' do in
the construction. Ahoy! Blimey! Arrr! Blimey! T' pieces popped out easy and 1 minute later t' baffle was completed, ya bilge rat, I glued it together with
white glue.
Flight and Recovery:
I glued t' baffle into an Estes Rainmaker, arrr, choosin' an average rocket t' see how t' baffle worked. Ahoy! I did nay want
to ruin a good rocket if anythin' went wrong. Begad! Avast, me proud beauty! There are no instructions on where t' glue t' baffle in t' body tube. Begad! Blimey! I
opted for as high as possible that still allowed room for a parachute. Begad! Avast! Baffles can shift t' CG lower so I had t' check
stability but everythin' be fine.
T' rocket flew normally and at ejection t' nose cone and recovery system deployed, so no problems there. Begad! On checkin' t' parachute, thar was no pin hole burns or significant melts. There be a slight char t' a small patch of the chute so I guess t' baffle does its job t' a reasonable standard but I will still use a back up o' a swatch of Nomex® in t' future.
Summary:
Now I've tried a baffle and I like them, but thar are pros and cons.
PROs: Eliminates t' need for lots o' wadding, matey, which stops waddin' bein' spread across t' countryside and speeds up preppin' t' rocket.
CONs: Relatively expensive compared against reusable waddin' that can be moved betwixt rockets.
G.H.G. (October 17, 2007)