I need help with building 2.5m rockets to the mun in 1.0.5

[kerballaut117]

hello I'm new on KSP and all the biger rockets (2.5m) I build Explode and I don't know why could you show me some of your designs or give me tips

thanks

 

[Red Iron Crown]

Welcome aboard! I've moved your gameplay question over to our Gameplay Questions subforum.  

[kerballaut117]

thank's but I use no boosters only engines like the twin boar or skipper engines +2 or 3 jumbo fuel tanks

 

[steuben]

pics of some of your attempts might help nail down where the problem is.

[SalehRam]

Get some screenshots dude, they can provide lots of information so we can tell you where is the problem... (F1 on keyboard, files saved in game folder in folder called Screenshots).

Until you get the screenshots, consider the following in your design:

1. When you start going big (aka 2.5m), use struts to tie stuff together.
2. Use fins on your rocket.
3. If you see yourself going beyond 100m/s in the first 1000 meter, then SLOW-DOWN, you need to go fast, but not very fast as your rocket will not hold against gravity force and aerodynamics.
4. Try to make gravity turns slowly and start turning slowly once you reach 50m/s. I do my turns starting from 50m/s and do them on 5 degrees every 5-10 seconds. just make sure you are doing them slow not to flip the whole rocket or blow it up.

You can use 1 core orange tank + a Mainsail, + 2 radially attached 1 orange + x200-32 tank on both sides with 2 Mainsails on each of them, activate the radial ones first, then the core once you go high in atmosphere. Those will give you the required lifting safely, but make sure you monitor the ascent speed not to go super fast while low in atmosphere.

Again screenshots are great

And welcome to the party!

[Brigadier]

Does the vessel explode because it comes apart at some point?  Or, when you stage, perhaps?  Can you control the vessel's ascent?  Is there any parts clipping going on?  This last one happened to me.

@SalehRam has some good suggestions for design and technique.  I would also add using vernier thrusters to help maintain pitch control.

[kerballaut117]

well for example I built a vessel that was fine during ascent but as soon as my decouplers for my booster went off (my boosters were twin boars) everythingfell aprat and exploded

 

Edited March 3, 2016 by kerballaut117

[kerballaut117]

7 hours ago, SalehRam said:

Get some screenshots dude, they can provide lots of information so we can tell you where is the problem... (F1 on keyboard, files saved in game folder in folder called Screenshots).

Until you get the screenshots, consider the following in your design:

1. When you start going big (aka 2.5m), use struts to tie stuff together.
2. Use fins on your rocket.
3. If you see yourself going beyond 100m/s in the first 1000 meter, then SLOW-DOWN, you need to go fast, but not very fast as your rocket will not hold against gravity force and aerodynamics.
4. Try to make gravity turns slowly and start turning slowly once you reach 50m/s. I do my turns starting from 50m/s and do them on 5 degrees every 5-10 seconds. just make sure you are doing them slow not to flip the whole rocket or blow it up.

You can use 1 core orange tank + a Mainsail, + 2 radially attached 1 orange + x200-32 tank on both sides with 2 Mainsails on each of them, activate the radial ones first, then the core once you go high in atmosphere. Those will give you the required lifting safely, but make sure you monitor the ascent speed not to go super fast while low in atmosphere.

Again screenshots are great

And welcome to the party!

thanks for the advice I'll try it right know.

 

Edited March 3, 2016 by kerballaut117

[kerballaut117]

7 hours ago, SalehRam said:

 

I solved my problem of exploding rockets : A new step in kerball safety

[Brigadier]

Post your solution for the benefit of others and mark the topic solved when you get a chance.

[kerballaut117]

how do I put the topic "solved"

[Red Iron Crown]

25 minutes ago, kerballaut117 said:

how do I put the topic "solved"

You mark one of the responses as "best answer" by clicking the big checkmark on the left side of the post. Looks like you've already done it.  

[kerballaut117]

ok I didn't know

thanks Red Iron Crown