First just take a deep breath. We're here to help you, and you will get it.
Your initial earth orbit is a good place to start. You don't need to have a perfect 300x300 orbit right at MECO. It's
actually more fuel efficient to do a gradual climb and cut off the main engines (MECO) at around 110 km. I usually
burn until my ApA is 310 km (just a little higher to be safe). At apoapsis, just burn prograde at about ApT = 5
seconds for the delta glider. And like I said earlier, try to have a MECO vertical speed of about 120 km, and MECO at
ApA = 310 km.
Next -- your plane alignment. If you meant 0.09 degrees (you said 0.9) then you are fine. But 0.9 degrees is a bit
stretching the limit. Remember, use translational thrusters and be methodical. It will
Your transfer burn. You said you began bringing the throttles back at dv = 600. I'm not sure if this makes much of a
difference, but try to bring them back much later in the burn (dv = 70)
I think your biggest problem is your lack of mid course correction. There is an extremely slim chance that your initial
burn from low earth orbit will put you on the trajectory you want. Here are the steps for a correction burn:
1. Open an orbit MFD and set the reference to moon. (REF button, arrow keys, blah blah blah)
2. When the G factor at the bottom says about 0.20, burn retrograde until PeA = 1000 km. You want to make it high
because the orbit MFD does not take into effect the distortion that the moon's gravity will have on your orbit. As you get closer, your PeA will go down in value. And, sometimes, prograde and retrograde are reversed in trans-lunar space. If prograde decreases your PeA, just turn retrograde and burn, and it will also have the opposite affect.
Repeat at G = 0.50. You now want a PeA of 300 km.
Remember, your distance is inversely proportional to how much fuel needed to make a correction (big distance =
small amount of fuel and vice versa). It's better to do things early.
Also at G = 0.50, align your orbit with the base. It will use about 1/20 of the amount of fuel it would take to do the
same manuver from low lunar orbit (due to the less speed). To answer your question above, you are correct, unless you burn orbit normal (+) or (-) at the exact
node, your ApA or PeA will
be affected. This is why you should start in a 300x300 orbit and align yourself, then
bring your orbit down to a 40x40 or so. This allows room for PeA or ApA shift without crashing.
If I were you, however, I would not be concerned at all right now with alligning yourself with the base. Once you get
four or five successful transfers in, then you can concentrate on aligning yourself with the base. Baby steps, my
Also, if the transfer MFD says No Intersect, disregard it. At that point the moon's gravity has taken over and it is time to use an orbit MFD with Reference (REF) set to moon for your navigation tool. All of this is assuming it says no intersect AFTER you have left earth. To avoid it, I make my dotted HTO orbit extend a small amount beyond the moon's orbit.
Good luck! And certainly post here if you have any more trouble!Post Edited ( 04-04-08 05:57 )