Originally Posted by wondering
Actually, Vmax endurance is somewhat lower than Vmd for a jet aircraft since fuel flow lines projected onto the drag curve have a negative slope. The opposite is true for specific range lines which have a positive slope. Hence, Vmax endurance is lower than Vmax range.
If someone could explain how to insert graphs, I´d be more than happy to post one showing the relationships.
Responding privately to the quoted post, I offered
wondering posting service. I downsized and compressed his high-quality scans considerably hoping to make them suitable for in-line posting here. To see them in much better resolution see the linked copies.
full resolution graphs 16 and 17
full resolution graph 18
{edited to add a source reference:
Jet Airplane Performance by
Lufthansa Consulting, First Edition, July 1988}