Kraken 1.63" rocket with 6 tube fins

[WidowmakerRun]

I decided i am going to build a Kraken rocket with 6 tube fins.

Any input?

 

[Rob Campbell]

 

[Pem Tech]

This should be interesting.

 

[tsmith1315]

Any input?

Make it 38mm capable.

 

[DAllen]

Release the QUACKEN

 

[Pem Tech]

Release the QUACKEN

HA! Now that is funny!
Be a great duck themed rocket name.

 

[Rob Campbell]

 

[WidowmakerRun]

This should be interesting.

Actually...just found out 7 tube fins is best, has the least drag vs 4, 5, 6 fins. Some guy has data on it.

So depending on the weight when i fabricate all the pieces, then i will choose either 24mm or 29mm motor mount.

I dont need to go over 1,300 feet or so....don't want to lose it.

 

[dhbarr]

Actually...just found out 7 tube fins is best, has the least drag vs 4, 5, 6 fins. Some guy has data on it.

So depending on the weight when i fabricate all the pieces, then i will choose either 24mm or 29mm motor mount.

I dont need to go over 1,300 feet or so....don't want to lose it.

"Best" is subjective, all respect to Larry Brand. 7:1 with a short aspect ratio functions like a grid fin, way less drag than long 6:1.

But! Kraken's nice and draggy anyhoo, so you're not pushing for speed or altitude here.

EDIT: Yes, for any reasonable tubefin shape 7:1 should slip through easier than 6:1

 

[Pem Tech]

View attachment 598476

Ding! Ding! Ding!
We have a wiener!

 

[WidowmakerRun]

This