Vmo vs MMo
Hey Mates,
Can someone please explain the difference between Vmo and Mmo? I'm thinking that Vmo is a limitation speed based on excessive dynamic pressure from flying at high speeds, while Mmo is a limitation based on shockwave damage from flying at high speeds. Is this correct?
Also, I do not understand why Vmo changes with altitude. I know for piston a/c, Vne does not change with altitude, so it seems logical to me that Vmo would be a constant CAS, while only the TAS would change with altitude.
Thanks.