What are the fluid properties associated with a helium fille

What are the fluid properties associated with a helium filled balloon? Are they the same as those that affect a rocket? Why or why not?

Solution

No the fluid helium is much denser than air. That is the reason that helium filled balloons actually float and go up in the atmosphere.

Whereas the principle associated with a rocket\'s takeoff is thrust force which is generated by the propulsion engine.