SSU Questions thread

[asdad]

GLS , in STS1 Press Kit I see OMS 3 and 4 in STS-1 FLIGHT SEQUENCE page , the question is what should i press on keypad in panel C3 ?

 

[GLS]

GLS , in STS1 Press Kit I see OMS 3 and 4 in STS-1 FLIGHT SEQUENCE page , the question is what should i press on keypad in panel C3 ?

Those were just regular OMS burns in orbit. :shrug:

 

[asdad]

GLS , that's mean ORBIT MNVR EXEC right ?

 

[GLS]

GLS , that's mean ORBIT MNVR EXEC right ?

Yep.

 

[asdad]

ok thanks GLS

---------- Post added 05-24-19 at 03:08 AM ---------- Previous post was 05-23-19 at 11:21 AM ----------

guys , in SSU should I write Trim LOAD in OMS MNVR EXEC or only PEG 7 ?

 

[asdad]

guys , in SSU should I Write TRIM LOAD or PEG 7 in OMS MNVR EXEEC ?

 

[Gingin]

Usual trim Load are 0.4 ° for Pitch , -5.7° for left OMS and +5.7 ° for right OMS in yaw
That is for a dual engine burn, to allow the nozzles to push parallel to the centre of gravity


For a single engine burn on left OMS, yaw trim would be +5.7 ° for left OMS

For a single engine burn on right OMS, yaw trim would be -5.7 ° for right OMS

That is to allow the single OMS to push through the center of gravity

 

[asdad]

ok thanks Gingin

---------- Post added at 03:38 PM ---------- Previous post was at 03:37 PM ----------

btw Gingin this trim load for STS1 only or all STS ?

 

[asdad]

GLS , I have Question about OPS 202 PAYLOAD BAY DOOR OPERATIONS can be access or not ?

 

[GLS]

GLS , I have Question about OPS 202 PAYLOAD BAY DOOR OPERATIONS can be access or not ?

Not done yet.

 

[asdad]

ok GLS , btw I have problem with ADI which mean I change Attitude from LVLH to INRTL but in ADI ATT indicator still LVLH can you fix it ?

 

[Gingin]

ok thanks Gingin

---------- Post added at 03:38 PM ---------- Previous post was at 03:37 PM ----------

btw Gingin this trim load for STS1 only or all STS ?

It is a standard trim that you can find in latest checklist and scom.
It can vary a bit around those value mission and center of gravity depending.

But it will be very close to that , especially for’the Yaw component .

 

[asdad]

ok thanks Gingin

 

[GLS]

ok GLS , btw I have problem with ADI which mean I change Attitude from LVLH to INRTL but in ADI ATT indicator still LVLH can you fix it ?

The ADI currenty only works in LVLH, so the switch has no practical effect.

 

[asdad]

ok no problem GLS

 

[asdad]

Guys , Can I add Hydraulic QTY in APU.cpp ?

 

[GLS]

Guys , Can I add Hydraulic QTY in APU.cpp ?

The hydraulic quantities don't really have much to do with the APUs... those would be state variables of the hydraulic system, which we still don't have. :facepalm:

If you want to make the hydraulics, by all means go ahead. But if you just want to see a few more green bars in the APU/HYD display, then I have to say "no thanks".

 

[Urwumpe]

And we have no leakage... I am not sure, how much QTY we would have displayed in the minimum case without leakage, but I suspect over 95%....

(Just checked - the hydraulic actuators are ALL double acting)

 

[GLS]

And we have no leakage... I am not sure, how much QTY we would have displayed in the minimum case without leakage, but I suspect over 95%....

I remember reading something about it, and it was a high value.

 

[asdad]

ok no problem