Nathan
☢
- Joined
- Apr 19, 2012
- Messages
- 2,230
- Reaction score
- 755
I just finished scratch building an upscale LOC Onyx and am about ready to begin painting. It is 5.5" diameter, 47" tall, with 54mm motor mount. All of the fiberglass components came from Madcow except for the fins which were custom cut by Nat Kinsey at UpscaleCNC. I'll be flying it on 2 and 3 grain CTI motors. It has an av bay in the nose cone with a RRC3 altimeter, and will also have dual Chute Releases. The RRC3 will fire the apogee deployment charge, with motor ejection for backup. Then the two Chute Releases will both release the 4 foot chute at 600 ft, for redundancy.
It has 13 oz of BB's and epoxy in the tip of the nose. Stability is about 0.8 cal. That might not sound like much but it is fine for a short stubby rocket because that doesn't take base drag into account. For example a Minie-Magg (which is also 5.5" diameter) is about 0.1 cal stability without additional nose weight. But with a rocket like this it is important to use a motor that will get it off the rail with plenty of velocity. First flight will probably be with a 2 grain J430 which sims at 2600 ft.
I'll post more pics as I paint it, which will probably take about a month.
It has 13 oz of BB's and epoxy in the tip of the nose. Stability is about 0.8 cal. That might not sound like much but it is fine for a short stubby rocket because that doesn't take base drag into account. For example a Minie-Magg (which is also 5.5" diameter) is about 0.1 cal stability without additional nose weight. But with a rocket like this it is important to use a motor that will get it off the rail with plenty of velocity. First flight will probably be with a 2 grain J430 which sims at 2600 ft.
I'll post more pics as I paint it, which will probably take about a month.
Last edited: