Description
The second itteration of the Helix III model, which can now be called a series. It uses solid rocket boosters on the first 2 stages, making the cost of the launch vehicle a lot lower. This does mean however, that they can’t be shut down or throttled when necessary, use it with caution.
A mod rocket called Helix III i2. Built with 47 of the finest parts, its root part is probeCoreHex.v2.
Built in the VAB in KSP version 1.6.0.