The following diagram was included in Rikki-Tiki-Tavis' answer to this fine question of a few hours ago.
I am hoping somebody can explain some of the questions I have about this data. It shouldn't matter which direction you are travelling, the numbers are supposed to indicate delta-v in transferring from one spot or orbit to another.
Some strange things I want to observe about this data are:
1) The value between Venus and Venus Low orbit is 27000 while the value between Earth and earth low orbit is 9400. That's almost 3 factors difference. The escape velocities of the two planets however, are nearly identical (Earth's is roughly 11,200 m/sec and Venus's is roughly 10,200 m/sec). How can the delta-vs be so much farther apart?
2) The arrows and their explicit direction are supposed to indicate that "inbound aerobraking is available". Yet these arrows are placed 250km above Earth and 400km above Venus. Those would be the upper limits of the braking as I understand it (the top of the atmosphere) and any potential braking would drop off sharply above that. Yet, several people have contradicted my interpretation of the data as though the transition from intercept to low orbit is going to provide much braking.
3) other users also seem convinced that when the delta-v is associated with aerobraking, that 100% of it can necessarily be applied as braking.
I am hoping that these issues can be better clarified, specifically with regards to how the numbers and arrows in the chart are to be interpretted, maybe with an example fly-thru from Earth to another planet and back, ignoring the obvious problem of fuel capacity.
Perhaps if the actual source of this data was identified, I would be less confused.