Flying a BFR style ship?

[Cloakedwand72]

I see lots of mods & craft replicas of the 2018/2019 version of the BFR & wondering when ever I fly them so my missions in orbit then come back. Why do they flip out on yeah right after reentry even before you try the flip maneuver? Should I install FAR aerospace research mod & a fuel balancing mod would that help? Also have trouble gliding a bit like what the animation trailers show on SpaceX’s website.

Edited March 21, 2020 by Cloakedwand72

[FlyingGeeze]

Pictures of current craft should help.

I believe you suffer from uneven drag effects stock ksp doesn't teach you and stock KSP lacks editor readouts to go about.

Do the following to test drag distribution on a BFS design....

BFS has larger fins at the bottom then at the top, reason being that the bottom is heavier where the engines and fuel systems are.

The top carries the compartment which is heavy to but somewhat less. In ksp you should mimic that with the fuel tanks in between. Use the MOD RCSBuild-aid, activate in the VAB with CoM indicator activated. Make sure the compartment and engine weight distribution is distributed that the yellow and red (RCSbuild) orbs are aligned, that ensures even fuel burn.

Take off the fins and use (cheat menu:lander) or (hyperedit mod) to do a drop down from several Km altitude using reaction wheels. If you can freely rotate the vessel during a drop down test while achieving high speeds drag is stable. 

If not then either top or bottom has more drag. Many people will use custom fairings at the top to resemble a nosecone compartment, and, fairings have more surface drag then fuel tanks or engines. If engines want to sway to the bottom you need a similar mockup fairing at the bottom to counteract this or a few smaller wing pieces near the engines. Keep trying to play changing this setup while doing the drop down tests until you calibrated this setup.

If successfull add the fins top and bottom and retest to make sure.

If all went well it should work.

 

[Cloakedwand72]

On 3/22/2020 at 3:19 PM, FlyingGeeze said:

Pictures of current craft should help.

I believe you suffer from uneven drag effects stock ksp doesn't teach you and stock KSP lacks editor readouts to go about.

Do the following to test drag distribution on a BFS design....

BFS has larger fins at the bottom then at the top, reason being that the bottom is heavier where the engines and fuel systems are.

The top carries the compartment which is heavy to but somewhat less. In ksp you should mimic that with the fuel tanks in between. Use the MOD RCSBuild-aid, activate in the VAB with CoM indicator activated. Make sure the compartment and engine weight distribution is distributed that the yellow and red (RCSbuild) orbs are aligned, that ensures even fuel burn.

Take off the fins and use (cheat menu:lander) or (hyperedit mod) to do a drop down from several Km altitude using reaction wheels. If you can freely rotate the vessel during a drop down test while achieving high speeds drag is stable. 

If not then either top or bottom has more drag. Many people will use custom fairings at the top to resemble a nosecone compartment, and, fairings have more surface drag then fuel tanks or engines. If engines want to sway to the bottom you need a similar mockup fairing at the bottom to counteract this or a few smaller wing pieces near the engines. Keep trying to play changing this setup while doing the drop down tests until you calibrated this setup.

If successfull add the fins top and bottom and retest to make sure.

If all went well it should work.

 

I’m going bye user made crafts & or mod crafts.