It's actually a lot more complex then that, with triggering fueltanks too to have the delta-v needed for suicide burn and landing, but lets skip that for now.īut that's just one approach, not advisable to keep things fun and playable.ĭecent SAS might very well be sufficient for what you need, or perhaps try to slam on one tiny solid engine set (the seperatron) with only 10% of fuel and full thrust and stage it along your seperation.
Then, one sec later it fires retrograde SAS autopilot, and the main engine at full thrust for some 10 seconds or so and it's done. (3+4 are in symmetry yet not symmetrically fired to cause the desired attitude change). Then, tiny solid 3, firing asymetrically to make it tumble from prograde to retrograde, wait for it and then tiny solid 4 fires to cancel out that spin. It makes tiny solid engines 1+2 (in symmetry) fire first to get some distance / acceleration away from the higher stage. I do so by auto-triggering action groups at set seconds after seperation of the stage. I was able to fully automate that sequence using recoverystage, mechjeb and smartparts mods, and simulate only the suicide burn, not the landing, cause i don't care about that. I do this too, but with 4 tiny solid engines instead. In my optics, that video translates to kerbal having just 1 tiny solid engine assymetrically attached to upper side of booster (firing at 1:17 in the vid) plus off course a lot of reaction wheels, 'cause it's kerbal. That's up to you, RCS may help you in the entire suicide manouever, pretty ineffeciently that is, but I suggest to go spacex there, like you see them doing here: at 1:15 to 1:25 What you see is there is RCS going on, but the main engine does most work. However, you spoke of a suicide burn spacex like retrieval of spent first stage. I agree with the people above, don't use RCS unless for docking.