system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do jet engine-powered helicopters avoid generating thrust from the jet engines themselves?

I understand that most helicopters use turboshaft engines, wherein a jet engine is used to turn a transmission that's connected to the main rotors. My question is, wouldn't there still be directional thrust generated by the exhaust gases from the jet turbine? Wikipedia doesn't really address this, and I can see exhaust vents on helicopter designs but how is it possible avoid any thrust from the hot gases?
gpt
All the thrust is used up by the turbine. Calling a helicopter engine a jet engine is a bit misleading. The correct term is really gas turbine engine.

They are used all over the place from helicopter to tanks to ships.

They fire hot exhaust gasses into a series of turbines that slow the gas down, and the energy is used to rotate the turbines.