What does it mean to be financially responsible? It's a complex question with a complex answer, but at its core is a simple truth: To be financially responsible, you need to live within your means. And to live within your means, you must spend less than you make.
longitudinal axis. A straight line running fore and aft through the center of gravity. It is horizontal when the airplane is in the rigging position. The aircraft rolls about this axis. See axes.
Longitudinal dihedral is a comparatively unclear term related to the pitch axis of an aeroplane. It is the angle between the zero lift axis of the wing and horizontal tail. Longitudinal dihedral have the ability to influence the nature of controllability about the pitch axis and the nature of an aircraft's phugoid-mode oscillation.