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Struggling with duct fan and current blades on xbox. Were there not duct fan blades? I swear I saw them. They don't seem to be on xbox.

The current blades dont fit duct fan on xbox. Weren't there duct fan blades specifically for the duct fans or am I mistaken? If so, how do I make the current blades fit?

I'm trying to build VTOL crafts using new helicopter blades from Breaking ground DLC. But always when I'm building it, these crafts start crazy rotation or even don't take off. I know that real helis requires propellers on a tail to kill rotation, but how the physics works in KSP?

This post is to share some tips at improving the efficiency of turboshaft engines, driving propeller blades (airplanes) or rotor blades (helicopters). The concepts should apply equally to electric rotors driving propellers or heli-blades. I'm using 1.7.3, the electric rotors, turboshaft engines, and propeller/heli blades are new to stock KSP, so in later versions some of this info might become outdated. It's easy to focus on either the Turboshaft Engine, or the Prop/Heli blades when troubleshooting 'why doesn't my vessel work'. The reality is you need to look at both elements to make a