New Delta-V map

[kamaz]

NOTE: Per the discussion on reddit, the numbers include gravity losses and losses due to atmospheric drag during ascent. Hence delta-v for Earth ascent is 9km/s instead of 7km/h, and Venus ascent is 27 km/s.

 

[fsci123]

NOTE: Per the discussion on reddit, the numbers include gravity losses and losses due to atmospheric drag during ascent. Hence delta-v for Earth ascent is 9km/s instead of 7km/h, and Venus ascent is 27 km/s.

Is there anyway to do the same with another(fictional) solar system?

 

[N_Molson]

Hehe I like the Metro map layout :thumbup:

 

[kamaz]

Is there anyway to do the same with another(fictional) solar system?

Yep. http://www.reddit.com/r/KerbalSpace...he_ksp_subwaystyle_deltav_map_for_the/cik5qnf

 

[Topper]

Hi I like this map!
But there is one point I don't understand:
Why there is an additional dv from "Mars Intercept" to "Phobos Intercept" (e.g.). If this means the dv from Phobos to a "Mars hit", this should be also a "one way"... right?

I just mean this because from Earth, it's the same dv to intercept Mars or Phobos which is required.

 

[dgatsoulis]

Moon Intercept 3260 m/s

:huh:
Since when does a hohmann transfer from LEO to the Moon cost more than the escape dV from the same altitude?

 

[kamaz]

I just mean this because from Earth, it's the same dv to intercept Mars or Phobos which is required.

He writes "intercept" but he really means "C3=0" or "escape".

Yes, you can directly intercept Phobos when coming in from a Hohmann transfer. However, this is not a good idea, as your relative speed will be 1280m/s...

---------- Post added at 09:57 PM ---------- Previous post was at 09:52 PM ----------

:huh:
Since when does a hohmann transfer from LEO to the Moon cost more than the escape dV from the same altitude?

Hold on there's a bigger problem... Per his numbers, transfer to geostationary orbit costs more than escape?!

 

[dgatsoulis]

Hold on there's a bigger problem... Per his numbers, transfer to geostationary orbit costs more than escape?!

It does if you include the circularization burn.
From 250x250km to 250x35784km = 2440 m/s
From 250x35784km to 35784x35784km = 1470 m/s
Total 3910 m/s

 

[kamaz]

It does if you include the circularization burn.
From 250x250km to 250x35784km = 2440 m/s
From 250x35784km to 35784x35784km = 1470 m/s
Total 3910 m/s

Then, maybe his figure for "Moon intercept" includes velocity matching with the Moon or LOI?

 

[dgatsoulis]

Transfer to the Moon + LOI is ~4 km/s.
And how are gravitational losses taken into account when he gives only 1730 for a landing on the Moon from 100 km altitude?
I have not checked the rest of the map but the Moon DV is overestimated for the transfer and underestimated for the LOI and landing. The total seems to be about 130 m/s less than the actual dV. (5670 instead of ~5800 m/s).