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Thread: ... Land on the Mun?

  1. #1

    ... Land on the Mun?

    Okay so now that I've finally understood how to get to the Mun, my problem is landing. I can bring my ship down to the ground without issues but slowing down is confusing me. The lowest I can get is about 20m/s before I start rising again and have to cut my engines to lower down, usually resulting in either crashing or my capsule bouncing across the surface. What is the technique to removing the "bounce" from my landing and coming down smooth onto the surface?

  2. #2
    Sounds like you still have horizontal velocity to kill. Try to keep your ship facing retrograde(the green/yellow marker with an X through it on your nav-ball). As you slow down it will move upwards. Once it is vertical, come down slow, and try to land at less than 5m/s.

  3. #3
    That's what I'm doing, something tells me I'm either starting far too early or far too late. I just become afraid that by the time I want to lose speed I have too much and no time to kill it

  4. #4
    I can totally relate to this issue, yesterday I started practicing landing on Kerbin before embarking on a journey to the Mun, and I have to say landing has to be by far the most difficult thing in the entire process

    Im going to try this, thanks for the tip.

    Quote Originally Posted by Pyre View Post
    Sounds like you still have horizontal velocity to kill. Try to keep your ship facing retrograde(the green/yellow marker with an X through it on your nav-ball). As you slow down it will move upwards. Once it is vertical, come down slow, and try to land at less than 5m/s.
    "You are a man, 10,000 years in the making; 10,000 years of endeavour in science and the arts and humanities; and within one generation man has been reduced to a feckless, bed-wetting, parmesan shaving imbecile who revels in his own uselessness. You have to stop this." - James May

  5. #5
    E unum pluribus. Vanamonde's Avatar
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    If you're having that much trouble fine-tuning the speed, maybe your engines are just too powerful for the weight of your lander? What does you ship look like (in screenshots)? Maybe you could get close to the speed you want with the main engine, and then use RCS bursts to fine-tune. You might also build your lander shorter and wider, in which case you can bounce a little and still land upright. But mostly I suspect that if you're going sideways 20m/s as you're about to touch down, you're waiting too long to cancel your horizontal velocity.

  6. #6
    Yeah, the nav ball shows velocity so if you're showing 20m/s on that while your vertical speed indicator is reading 0 then it's horizontal speed - you can either tilt your rocket slightly and use the main engine to kill it or use RCS via the IJKL keys.
    Last edited by EndlessWaves; 29th August 2012 at 08:02.

  7. #7
    Try starting descent from high orbit (~50 Km or so).After main retroburn to lower periapsis. Slowly retroburn until the
    [Spoiler: retrograde marker]
    is in the center of the blue side of navball, that's mean you have no horisontal velocity. if it's not in the center, horisontal velosity is not killed.
    Last edited by Legal2k; 29th August 2012 at 07:44. Reason: Added spoiler tags
    If I were a grave-digger or even a hangman, there are some people I could
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  8. #8
    E unum pluribus. Vanamonde's Avatar
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    Nothing like getting something backwards in print to make you feel stupid. You're right, Pyre. I guess it's just too early in the morning for me.
    Last edited by Vanamonde; 29th August 2012 at 12:37.

  9. #9
    Quote Originally Posted by Vanamonde View Post
    You want the prograde marker in the blue and the retrograde in the brown, or your landing will not go smoothly. ;)
    I think you have that reversed, if prograde is in the blue, you are going up, and landing will be difficult unless you are aiming for the underside of an Arch.

  10. #10
    Senior Rocket Scientist
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    Shortly before touchdown, you want to maneuver to put your retrograde marker on the 90° pitch dot on the blue part of the navball.

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