Vgmin???
I suspect that this is probably John T's territory, but does anyone have the definition of Vgmin, please?
The context is the Honeywell FMS handbook, which quotes Vgmin as the basis for holding speeds, but doesn't give a definition. Again, from the context, I could guess that it is minimum groundspeed but have never come across that as a performance type parameter before. The rest of the defining para sees groundspeed as a basis for calculating min. holding speed by using instantaneous wind updates to generate CAS as an additive to groundspeed. Anyway, a 'book' definition of Vgmin would be helpful - TIA