How do i . . .

The Rocketry Forum

Help Support The Rocketry Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.


Well-Known Member
Jan 4, 2009
Reaction score
add two parallel tubes from a transition into a transition (as in the 36D)? As of right know their running linear from one tube to the next,
Don't understand the question. Is it a RockSim question, or a build question?
Oops. My bad. I've now noticed this is under the Rocketry Software group.
Can you give a little more detailed definition? (BT what to BT what, with fairings covering what sort of lengths, etc; maybe even a sketch?) PM me if you want.

I'd be happy to try to help, but I am not sure what you are looking for
I'm trying to attach the rocksim file for the 36d squared. I see a part listed as "Virtual Tube" in the design file. I suspect that is key to allowing parallel tubes. If that fails, look at the apogee technical reports or possibly a saturn 1b design file.

View attachment