Transfer Window Planner...not making sense?

[Sirine]

http://alexmoon.github.io/ksp/

Source: Kerbin 70x70km -> Moho 20x??km..

Compare with

Kerbin70x70km->Eve (90x??km)->Moho 20x??km..

Question:-

1) Why going to Eve slingshot...does not save delta-v. (Base on alexmoon calculation). But in real game environment...I did save about 500 delta-v?

I can't said that 500 is perfectly measured....Cause I just launch, and reload and launch again.

Edited December 23, 2013 by Sirine

[KvickFlygarn87]

The planner assumes circular orbits. If you manage to plan an unassisted flyby of Eve, then to Moho without burning, you will earn a massive load of Delta V.

[Kasuha]

Source: Kerbin 70x70km -> Moho 20x??km..

Compare with

Kerbin70x70km->Eve (90x??km)->Moho 20x??km..

Kerbin -> Eve -> Moho is planned using four to six maneuvers by the planner:

1/ Kerbin ejection

2/ (inclination fix)

3/ Eve injection

4/ Eve ejection

5/ (inclination fix)

6/ Moho injection

But in reality you're not going to do all these maneuvers. You're going to do this:

1/ Kerbin ejection

2/ (inclination fix)

3/ Eve slingshot = injection - ejection + inclination fix to Moho (those "-" an "+" are figurative)

4/ (corrections)

5/ Moho injection

This maneuver could theoretically be calculated and optimized, but the planner just doesn't provide that