Please Design my Rocket Fins: both are 2.6" x 62.25"

[mjstech]

The one on the left has 4x24mm motors (4xE). The one on the right will be a 29mm motor mount.
Like the title says, both are Estes style BT-80 tubing (2.6") total rocket length including nose is 62.25".

I just can't think of what to do for the fins for either rocket.
I need some of you creative people to come up with some fin styles. I am open to anything (simple is good).
I do have rocksim 7 (but never learned how to use it well) if you are able to upload a fin design.
I would like to have finished fin designed by Tuesday 2/23 so I can cut, glue, and finish.
Thanks,
Mark

 

[rocketlaw]

How about a long skinny fin on one of your models. Something like a 10" root chord x 2.5" length that comes to a triangle point. Your rocket is long enough that this root chord length should still be stable. Attached is the rough design I am talking about:

 

[dedleytedley]

I'm thinking ringfins, maybe something like the Estes Hyperion or the Solar Flare. Ted

 

[brianc]

I just can't think of what to do for the fins

https://www.spacemodeling.org/JimZ/pcf-15.htm

https://giantleaprocketry.com/products_fins.asp

 

[JRThro]

https://www.spacemodeling.org/JimZ/pcf-15.htm

I'm a big fan of trapezoidal fins, either the symmetrical fin or the trapezoid where the trailing edge is at right angles to the body tube, as shown on the JimZ link above.

 

[Luv2launch]

The 4 E motor rocket will require a level 1 cert to fly if you use estes motors due to propellant weight, I don't believe 4 Aerotech E's would have the same limitation.Though by the looks of it it will fly just as well on 4 D's.

 

[ScrapDaddy]

Try doing a double delta with a big enough motor Itll go supersonic:neener: