[0.90] SAS not working on 'awakening' probes.

[Kesa]

I know mainly two ways to save eletricity on probes that have no source of power :

- switch to a distant vessel

- cut the power when not manoeuvring.

By using the second, I've found a very reproduceable bug : under some circumstances, SAS can be toggled but has no effect on the ship.

Steps to reproduced :

(0) This bug is career mode only, maybe science, but not sandbox (SAS in sandbox is handled very differently.)

(1) send a probe with sas capability and a lot of torque into space (the atmosphere makes the bug less noticeable).

(2) disallow any source of electric charge. The 'ship' should be uncontrollable.

(3) go to the space center.

(4) go back to the probe.

(5) allow the use of electric charge. you can now turn SAS on, but it has no effect.

SAS off, user input.

I initiate a spin, with time warp x 4, so you can see the spining, even without video.

SAS off, no user input

Then I release control, the probe still spins, as expected.

take note that I accidentally set a trim, hence the offset of yaw, but this shouldn't matter, as SAS should have killed it (and this happened without trim aswell)

SAS on, no control input.

the SAS send no attitude control, the carft still spin

SAS on, user input.

As expected, the manual commands overwrite whatever command the SAS should have send. However, the attitude control indicators a irelevant (I'm playing with all buttons at the same times, as you can see by the violence of the shaking).

Workaround :

Go back to the space center while the probe core has access to a source of electricity. jump to it again.

Ksp version : unmodded 0.90

[sal_vager]

Interesting, I'll have to test this a bit later, but why is your craft floating in bits?

[Starwaster]

Interesting, I'll have to test this a bit later, but why is your craft floating in bits?

Because he was spinning it around with phys-warp on

[Claw]

This probably has to do with how the game determines if you're allowed to use SAS or not, and why it affects career only. It's probably flagging the ship as "non-sas capable" when it loads up without an active core, and isn't checking it later when the probe core is activated.

Definitely something to check into.

Cheers,

~Claw

[Kerano]

I've experienced a similar issue twice now in KSP 0.90.0 career mode (fully stock, no mods) - losing control of a fully powered probe when switching between vessels in physics range. Haven't yet found a repeatable series of steps to reproduce it, but will grab a savegame before reverting next time it happens.

[yko]

This also happened with two vessels of mine on v1.0.5.1028. It felt like the vessel broke because I was switching it on and off too many times or the functionality got damaged by radiation, but I didn't see a mention of any aging applied to probes in KSP.

I don't know how much this is related, but the same vessel also could not satisfy 'Ensure that the probe has an antenna and can generate power' requirement, while the mission was directly mentioning this specific probe.

[sal_vager]

Hi yko, this thread is over a year old and there's been fixes since then.

It's likely your issue is not the same, can you please open a new thread to cover your issue, I better close this one.

Thanks.