Launch windows and direnction for orbit incliation

[Lele81]

Hi!!!
Another (I hope) easy question for the ones that are good in orbiter )))

Suppose that I want to launch to reach the Moon, (or the ISS or wathever)...Let's say Moon....I can see the Moon Inc. (inclination) value and, in MAP, I can see the Moon orbit in yellow...
I would like to know exactely:

1) WHEN lift off (the moment) (I think I have to watch at MAP MFD and wait until the cross on the yellow line (moon) is.....where?

2) WHICH (cardinal) direction in SURFACE MFD I should point at during lifting...East?...for example to go on the iss I can see you have to point at 42 degrees (not exactely east)....but why 42 and how can I know it? I think it's related to the INC value....but if the iss has a INC=51.56 degrees (EQU) why point at 42 during lift off? where does this number come from?

In many tutorials that I saw they only tell "now let's go to the moon, lift off immediately and point at "tot" degrees"...whitout explaining where those numbers come from...

Thanks!!!!!!

 

[garyw]

Hi!!!
1) WHEN lift off (the moment) (I think I have to watch at MAP MFD and wait until the cross on the yellow line (moon) is.....where?

Doesn't matter so much for the moon because you can do a tangential transfer. Certainly in the DG anyway.....

2) WHICH (cardinal) direction in SURFACE MFD I should point at during lifting...East?...for example to go on the iss I can see you have to point at 42 degrees (not exactely east)....but why 42 and how can I know it? I think it's related to the INC value....but if the iss has a INC=51.56 degrees (EQU) why point at 42 during lift off? where does this number come from?

Due East for the moon is good as the moon is roughly on the equator.

51.56 degress is the INCLINATION. 42 degress is the direction of travel when you launch from the cape (28 degress north lattitude). The calculation is azimuth=arcsin((cos tgtinc)/cos(lat))

 

[tblaxland]

For more information on how the launch azimuth calculation is derived, see here: http://www.orbiterwiki.org/wiki/Launch_Azimuth

 

[PhantomCruiser]

The moon really isn't a hard target to hit. Follow the "Go Play In Space" guidebook and you'll soon find it very easy. For a target in LEO, it gets easy too with a bit of practice. LaunchMFD might be of use to you. Set your target, watch the coundown timer, launch and chase the crosshair. I don't use it myself (found it too late), I basically do what you mentioned... Watch MapMFD, when the yellow line appoaches my lauch site, I throttle-up and go.

 

[insanity]

Depending on your craft, launch MFD can give you the azimuth and give you the path to achieve a nearly inclined parking orbit. If you use the XR series (which require scram ascents) the MFD will still give you a good azimuth.

 

[Lele81]

For more information on how the launch azimuth calculation is derived, see here: http://www.orbiterwiki.org/wiki/Launch_Azimuth

Thanks to you ALL, however THAT'S what I was looking for!!! ))
Thank you, that's solve my question number TWO, and for the number one ok, I understood that it is not a big deal, I'll try to lift-off when the cross of my plane and the cross of my target are almost in the same position on MAP MFD...

Thanksssssss