Originally Posted by
gums
Good math, Cog. Maybe go further and calculate the AoA required for those parameters.
Then re-read my re-post about the Viper deep stall AoA and descent rate and indicated airspeed.
Good math, poor aeronautics :-( Groundspeed is the horizonal component of the (inertial) velocity vector, if the airplane is going straight up or down, groundspeed is zero. Vertical speed can be either airdata (baro pressure) or inertial, the differerence between the two would be vertical wind components (up/downdrafts).