OpenRocket Questions

[Scott Chase]

1) How do you calculate your Standard deviation and turbulence intensity found in the preferences tab of OpenRocket?
2) Is there a website that provides this information for a specific City our county?
Thank you
Brian

 

[Nytrunner]

The intensity and SD are linked in OpenR (one drives the other and vice versa). As far as I know, this is just a feature that allows you to enter in some statistical variation in the wind during flight (since wind isn't constant in reality)

I usually just have a 5% setting for general purposes. You could check out Windy.com for wind data around the country (and world)

 

[Buckeye]

Yes, that feature copies Rocksim to add some variability to the simulation. I am not sure if it randomizes the wind continuously throughout the ascent and descent simulation, or if it picks a wind setting at the beginning of a sim and holds it constant. If you are really eager to find out, the source code is "Open."

Personally, I don't like it or use it. I want my simulations to repeat exactly when I re-run them! I am happy with a nominal result.

 

[Scott Chase]

The intensity and SD are linked in OpenR (one drives the other and vice versa). As far as I know, this is just a feature that allows you to enter in some statistical variation in the wind during flight (since wind isn't constant in reality)

I usually just have a 5% setting for general purposes. You could check out Windy.com for wind data around the country (and world)

Thanks I got it working. Do you know where I can find an estes ascender .rkt or .ork file?

 

[Nytrunner]

Cant help you there. Easy enough to make though, its just a 3FNC

 

[Scott Chase]

Yes, that feature copies Rocksim to add some variability to the simulation. I am not sure if it randomizes the wind continuously throughout the ascent and descent simulation, or if it picks a wind setting at the beginning of a sim and holds it constant. If you are really eager to find out, the source code is "Open."

Personally, I don't like it or use it. I want my simulations to repeat exactly when I re-run them! I am happy with a nominal result.

Buckeye
I was told by another user that it does randomize the conditions.