Talk:Tutorial: Luna 9

RCS

Does the second stage actually have RCS in it? The picture does not seem to show it, only RCS in the fourth stage. --Amacleod (talk) 20:47, 21 April 2015 (CDT)

RCS is not really a per-stage thing. When RCS is enabled, it will use monopropellant tanks and RCS thrusters anywhere on the craft, without regard to stages. As for actually using it with the second stage, you should really try to avoid or minimise its use until the final stage, so as not to waste your monopropellant before it's needed. --Murph (talk) 09:14, 26 May 2015 (UTC)

I think he just means you can't see the RCS thrusters on the 2nd stage (where stage means the physical stage of the rocket). --Dgrant (talk) 06:21, 27 May 2015 (UTC)

Can't get into orbit with this thing

I can't get into orbit using stages 1 and 2. — Preceding unsigned comment added by Dgrant (talk • contribs) 08:37, 26 May 2015‎

I've not tried the craft shown, but it could well be out of date. Just looking at it, it looks like it could possibly achieve orbit ok in 1.0, if flown correctly, but I'd need to test it to be certain. Also, you're not saying what the specific problem you're experiencing is, or what sort of ascent profile you are attempting. --Murph (talk) 09:17, 26 May 2015 (UTC)

This is from memory as I'm away from my KSP computer right now, but I tried several times so I think this is accurate. With the 1st stage (4 liquid fuel engines) I got to about 10km. Dropped the 1st stage and turned on 2nd stage liquid engine at the same time. Tried to do the 45 degree gravity turn, Could not get into orbit (ie. periapsis > 70km) with these two stages. Tried this a few times. Maybe I need to do a more efficient/gradual gravity turn? I tried combining 1st and 2nd stage. Didn't really get anything dramatically different I don't think. --Dgrant (talk) 06:29, 27 May 2015 (UTC)