Excellent man :)Sarudak wrote:So I finally got a low kerbin orbit with the help of the nav ball and that felt totally awesome and now I'm ready to try for mun if I can manage a rocket that can make it there. I want to say that this has been awesome fun.
For top stages. The LV 909 is actually much more efficient in vacuum than other engines (that's what the Isp numbers represent: force generated vs fuel burned), and its low weight means you don't have to push as much around. This starts becoming rather important when you're heading towards the Mun, as you don't want to drag a lot of weight with you.I'm assuming I need to make it to the mun with the tech I have to manage enough science to get to T5? Also I'm not sure I understand the point of advanced rocketry in T4. It seems to give me a smaller engine that is less powerful for it's weight as well as smaller fuel tanks that hold the same amount of fuel for their weight. Why would I want that?
Basically, large rocket engines are only really needed to get into orbit. Once you're already up there, you have all the time you need to make gradual course corrections, so something like the LV-909 is a much better choice.
Same thing with the smaller tanks. They both provide greater flexibility in rocket designs, and give you wiggle room in taking a lower overall weight with you.
And lastly, once you want to actually land somewhere...yeah...you want to keep things light. I may one day try landing a probe on the Mun with one of the larger engines just for giggles, but I wouldn't recommend trying that the first time :)