TFND - Three fins and a nose dome...

[Mugs914]

Another attempt to make something that looks like an early sixties design.

About 8" long, Estes BT-20 with a 13mm motor mount, Semroc nose cone (er... dome), streamer recovery.



Should be fun...

 

[Nytrunner]

Whats that fillet material? And how high do you predict on a c6 or B6?

 

[BABAR]

Like it.
Hope you get some painted pics

 

[mwtoelle]

And how high do you predict on a c6 or B6?

Generally, most BT-20 rockets that size can reach 1200' to 1800' on a C6 motor. A8-5s would be a better motor for general purpose flying if the rocket had an 18mm motor mount.

 

[Mugs914]

Thanks BABAR, I'll Be sure to post some finished pics...

The fillets were done with white glue and are pretty minimal. I might add a couple of more layers just to make the joints a bit stronger.

Open Rocket says It'll need about .25 oz. nose weight, but even with that it says an Apogee 13mm C6-7 gets it to 1447 ft...

:shock:

This thing is only eight inches long, I think I'll stick to an Estes 1/2A3-4t (337') or A10-3t (572'). It would be nice to get it back at least once!

 

[Nytrunner]

h>1/4 mile? Nice! I feel like I'm nerfing my altitudes by hanging my little estes altimeter in there. The quest for knowledge has its drawbacks sometimes I guess.

(totally missed the 13mm mount part)

 

[Cabernut]

Keep in mind with the sims - for 13mm nothing above an Estes A10 is currently available. Apogee hasn't made a 13mm C6 in a very long time.

 

[Mugs914]

Keep in mind with the sims - for 13mm nothing above an Estes A10 is currently available. Apogee hasn't made a 13mm C6 in a very long time.

Thanks Chris, I know the 13mm stuff is limited to the Estes motors these days. I got curious after Nytrunner asked, so I ran a sim with the Apogee C6 just for grins.

I built this one for the local monthly club launch where we have a 1000' ceiling, occasionally 1500', so the Estes motors will be perfect.

Still thinking about color scheme. First thought was typical old school; white with red nose cone and one fin, but I think it might need a bit more than that. I'm open to suggestions!