SSU public release comments/bug reports

[BenSisko]

Thanks guys. I just got a look at this late Sunday.

---------- Post added at 10:32 PM ---------- Previous post was at 08:05 PM ----------

I got the RMS dialogue box to work but the keyboard commands give a curious response.~10 degrees of sholder elevation, 5 degrees +Z elbow flexion, random wrist motion (with keypad-2 command), then no motion with any keypad command. The RMS will respond to dialogue box commands though.

 

[SiameseCat]

What commands are you sending to the arm, and what is the starting position? If you use the keyboard commands when the arm is in its initial position, its movement will be fairly restricted, because the shoulder/elbow joints will be close to their limits.

 

[slavek]

hello, thank you very SSU team for his work:speakcool:.
I have a problem when rms can unlatch and latch off fuse the RMS POWER
​

 

[BenSisko]

What commands are you sending to the arm, and what is the starting position? If you use the keyboard commands when the arm is in its initial position, its movement will be fairly restricted, because the shoulder/elbow joints will be close to their limits.

I get an anomalous response from any command I give through the keyboard in either Atlantis cockpit or STS-126 docking scenario. The RMS dialogue box works only for the shoulder, elbow, & wrist radio buttons but the translation and stow buttons do not.

This is a view of the RMS in the Atlantis cockpit scenario:
Panel A8
RMS MODE ORB UNL
RMS SEL PORT
The guard over RMS POWER doesn't move
Ctrl+A for RMS Control
Keypad-2

Though the RMS is released it seems tethered to the aft supports.

 

[Donamy]

you are trying to rotate around the point of the EE, press the arrow keys , "Delete" and "insert" for translation.

 

[SiameseCat]

What you're describing isn't a bug; it's a technical limitation of the RMS. In its cradled position, some of the joint angles are very close to their limits, so the arm's translation motion is very limited. In realife, the arm is manouvered to a pre-cradle position {SP=25.0, EP=-25.0, WP=5.0, WY=0.0, WR=0.0} before translation/rotation commands are used.

Also, the RMS Power switch is not simulated. This is another error in the checklists that we missed before release.

 

[DaveS]

Also, the RMS Power switch is not simulated. This is another error in the checklists that we missed before release.

Well, speaking of missed steps in the checklists, PL BAY MECH PWR switches on R13L needs to be "ON" for the MPMs top operate. This is per the generic PDRS C/L, 1-3 ON-ORBIT INITIALIZATION.

 

[BenSisko]

What you're describing isn't a bug; it's a technical limitation of the RMS. In its cradled position, some of the joint angles are very close to their limits, so the arm's translation motion is very limited. In realife, the arm is manouvered to a pre-cradle position {SP=25.0, EP=-25.0, WP=5.0, WY=0.0, WR=0.0} before translation/rotation commands are used.

Thanks, I think I've got it. I was experimenting with the keyboard and dialogue box commands to learn how to use the RMS. Does the Stow button in the dialogue box move the RMS back into its cradle or rotate the cradled RMS inboard for payload bay door closure?

 

[SiameseCat]

Stow button doesn't do anything; in earlier versions, it would stow the RMS back in its cradle. There are a couple of buttons like this which don't actually do anything, but which haven't been removed from the dialog.

 

[BenSisko]

I've gotten the RMS sorted out now. Thanks for the information!

 

[BenSisko]

Since STS-127 was posponed due to the hydrogen vent leak, I thought it would be fun to translate the scenarios for SSU v1.06 to SSU v1.25 (STS-122, STS-123, STS-124, STS-126). I unzipped the appropriate packages and immediately ran into trouble with STS-122. Here's the edited scenario:
BEGIN_DESC
Launch Space Shuttle Atlantis from Launch Complex 39A at the Kennedy Space Center for mission STS-101.
END_DESC
BEGIN_ENVIRONMENT
System Sol
Date MJD 51982.9069682177
Context SSU
END_ENVIRONMENT
BEGIN_FOCUS
Ship Atlantis
END_FOCUS
BEGIN_CAMERA
TARGET ATlantis
MODE Extern
POS 2.89 -0.51 -70.39
TRACKMODE TargetRelative
FOV 50.00
BEGIN_PRESET
Cockpit:STS-101:40.00
Ground:STS-101:40.00:Earth -80.62339 28.61960 110.00
Track:STS-101:50.00:RELATIVE 2.890 -0.009 -1.229
Ground:STS-101:10.00:Earth -80.65298 28.58028 20.00
Track:ISS:40.00:RELATIVE 1.983 -0.474 -0.522
Track:Earth:40.00:GLOBAL 2.896 2.132 -0.331
END_PRESET
END_CAMERA
BEGIN_HUD
TYPE Surface
END_HUD
BEGIN_MFD Left
TYPE Surface
END_MFD
BEGIN_MFD Right
TYPE Orbit
PROJ Ship
REF Earth
END_MFD
BEGIN_SHIPS
ISSrojectAlpha_ISS
STATUS Orbiting Earth
RPOS -3833430.64 5480334.56 -803952.35
RVEL 6169.424 3967.476 -2315.171
AROT 110.00 -10.00 80.00
PRPLEVEL 0:1.000
IDS 0:1 10 1:2 10 2:3 10 3:4 10 4:5 10
NAVFREQ 0 0
XPDR 466
END
Atlantis:SpaceShuttleUltra
STATUS Landed Earth
POS -80.6232502 28.6197342
HEADING 0.00
ATTACHED 0:0,MLP-2
PRPLEVEL 0:1.000 1:1.000 2:1.000 3:1.000 4:1.000 5:1.000 6:1.000 7:1.000 8:0.999 11:0.020
NAVFREQ 0 0
CONFIGURATION 0
ODS
MET 0.000
WING_NAME Atlantis
STBD_MPM
RMS
ODS
MRL 1.000000 1.000000
GRAPPLE 1 1.0000
RIGIDIZE 1 1.0000
EXTEND 1 1.0000
SAT_OFS_X 0.000
SAT_OFS_Y 0.000
SAT_OFS_Z 0.000
OPS 101
AUTOPILOT 51.600000 80.500000 105000.000000 7607.601000 0.730000
ASSIST 133.000000 298.000000
THROTTLE_BUCKET 1789.0 2094.0
HEADS_UP 13214.0
TGT_ID 2
BODY_VECT 1
ROLL 0.000
PITCH 0.000
YAW 0.000
P 0.000
Y 0.000
OM -1.000
GEAR 0 0.0000
STBD_RMS 1
EE MODE 1
CRT_SEL 1 1
LPROBEARM 1
LPROBE 2
RPROBEARM 1
RPROBE 2
LOMS 1
ROMS 1
AIR_DATA_PROBES 0.000000 0.000000
BOILERN2SPLY0 0
BOILERN2SPLY1 0
BOILERN2SPLY2 0
BOILERCNTLR0 0
BOILERCNTLR1 0
BOILERCNTLR2 0
BOILERHTR0 0
BOILERHTR1 0
BOILERHTR2 0
APUFUTKVLV0 1
APUFUTKVLV1 1
APUFUTKVLV2 1
APUCNTLRPWR0 1
APUCNTLRPWR1 1
APUCNTLRPWR2 1
HYDCIRCPUMP0 1
HYDCIRCPUMP1 1
HYDCIRCPUMP2 1
APUAUTOSHTDN 0
APUSPDSEL0 1
APUSPDSEL1 1
APUSPDSEL2 1
APUCNTRL0 1
APUCNTRL1 1
APUCNTRL2 1
HYDMNPMPPRESS0 0
HYDMNPMPPRESS1 0
HYDMNPMPPRESS2 0
MPSENGPWR00 0
MPSENGPWR01 0
MPSENGPWR02 0
MPSENGPWR10 0
MPSENGPWR11 0
MPSENGPWR12 0
HEISOLA0 0
HEISOLA1 0
HEISOLA2 0
HEISOLB0 0
HEISOLB1 0
HEISOLB2 0
APU0 0
APU1 0
APU2 0
HYDRAULIC_PRESS0 0
HYDRAULIC_PRESS1 0
HYDRAULIC_PRESS2 0
FUEL_PRESS0 0
FUEL_PRESS1 0
FUEL_PRESS2 0
MPS0 1
MPS1 1
MPS2 1
L_ET_UMB_DOOR 1.000
R_ET_UMB_DOOR 1.000
ET_DOOR_LATCHES 0.000000 1.000000 1.000000
MTU_MET_RUNNING 0
MTU_MET0 0.000
MTU_MET1 0.000
MTU_MET2 0.000
EVENT_TIMER0 540.000000 DOWN STOPPED
EVENT_TIMER1 0.000000 DOWN STOPPED
@SUBSYSTEM RMS
RMS
ARM_STATUS 0.500000 0.013600 0.014688 0.500000 0.500000 0.500000
SHOULDER_BRACE 0.000
GRAPPLE 1 1.0000
RIGIDIZE 1 1.0000
EXTEND 1 1.0000
RMS_ELBOW_CAM 0.0000 0.0000
RMS_ROLLOUT 0 0.0000
RMS_LATCHES 0 0.0000
@ENDSUBSYSTEM ;RMS
@SUBSYSTEM STBD_MPM
STBD_MPM_ROLLOUT 0 0.0000
STBD_MPM_LATCHES 1 1.0000
STBD_MPM_ATTACHED_PAYLOAD Ultra_OBSS 0
@ENDSUBSYSTEM ;STBD_MPM
END
MLP-2:Atlantis_MLP
STATUS Landed Earth
POS -80.6040620 28.608403
HEADING 0.00
NAVFREQ 0 0
T0_UMB 0 0.0000
END
LCC:SSU_LCC
STATUS Landed Earth
POS -80.6040745 28.6083855
HEADING 270.00
LAUNCH_MJD 54396.651625
PAD_NAME LC39A
SHUTTLE_NAME Atlantis
END
LC39A:SSU_Pad
STATUS Landed Earth
POS -80.6040720 28.6083850
HEADING 270.00
NAVFREQ 0 0
ACCESS_ARM 1 1.0000
GVA 1 1.0000
VENTHOOD 1 1.0000
FSS_OWP 0 0.0000
RSS_OWP 0 0.0000
RSS 1 1.0000
FSS_GH2 0 0.0000
FSS_IAA 0 0.0000
GOX_SEQUENCE 2
END
LC39B:SSU_Pad
STATUS Landed Earth
POS -80.6207920 28.6272650
HEADING 270.00
NAVFREQ 0 0
ACCESS_ARM 0 0.0000
GVA 0 0.0000
VENTHOOD 0 0.0000
FSS_OWP 0 0.0000
RSS_OWP 0 0.0000
RSS 1 1.0000
FSS_GH2 0 0.0000
FSS_IAA 0 0.0000
GOX_SEQUENCE 2
END
STS-122\payload:spacecraft\spacecraft3
STATUS Landed Earth
RPOS -3169082.88 -3229089.93 -4970880.29
RVEL 3472.188 4545.989 -5161.218
AROT -175.22 14.12 -40.57
ATTACHED 0:0,Atlantis
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
SEQ 0 -2 0.000000
SEQ 1 -2 0.000000
SEQ 2 -2 0.000000
SEQ 3 -2 0.744333
SEQ 4 2 0.497979
SEQ 5 2 0.806975
SEQ 6 -2 0.717533
SEQ 7 -2 0.500000
SEQ 8 -2 0.738610
SEQ 9 -2 0.500000
END
Ultra_OBSS:spacecraft\spacecraft3
STATUS Landed Earth
POS 0.0000000 0.0000000
HEADING 0.00
ATTACHED 0:1,Atlantis
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
END
Columbus:spacecraft\spacecraft3
STATUS Landed Earth
RPOS -3169082.65 -3229090.06 -4970878.35
RVEL 3472.188 4545.989 -5161.218
AROT -175.22 14.12 -40.57
ATTACHED 0:3,STS-122\payload
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
END
Colex3:spacecraft\spacecraft3
STATUS Landed Earth
RPOS -3169082.65 -3229090.06 -4970878.35
RVEL 3472.188 4545.989 -5161.218
AROT -175.22 14.12 -40.57
ATTACHED 0:2,ColESP
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
END
Colex2:spacecraft\spacecraft3
STATUS Landed Earth
RPOS -3169082.65 -3229090.06 -4970878.35
RVEL 3472.188 4545.989 -5161.218
AROT -175.22 14.12 -40.57
ATTACHED 0:1,ColESP
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
END
Colex1:spacecraft\spacecraft3
STATUS Landed Earth
RPOS -3169082.65 -3229090.06 -4970878.35
RVEL 3472.188 4545.989 -5161.218
AROT -175.22 14.12 -40.57
ATTACHED 0:0,ColESP
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
END
ColESP:spacecraft\spacecraft3
STATUS Landed Earth
RPOS -3169083.69 -3229090.15 -4970883.78
RVEL 3472.188 4545.989 -5161.218
AROT -175.22 14.12 -40.57
ATTACHED 0:1,STS-122\payload
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
END
END_SHIPS

Opening the scenario results in this:

When I start the scenario, the OBSS jumps to the stowed position on the starboard sill but the payload remains displaced.

Two questions:
1. What are the conventions for placing cargo in the payload bay?
2. How do I get the OBSS in the stowed position on the MPM's?

Thanks

 

[Donamy]

The Columbus would be better attached to the 0:6,Atlantis but you may have to change the direction or rotaion of the attachment point or both. Remember the older payloads were done before the SSU shuttle's attachment points worked. You will have alot of fun changing them. I will get around to it eventually.

 

[BenSisko]

Oh joy, a challenge! Any advice on the OBSS?

 

[Donamy]

Try changing the Shuttle to Discovery, but leave the wing name Atlantis. You have to change all the attachment from Atlantis to Discovery also. I had trouble with attachments while using different shuttles too.

 

[BenSisko]

I'll give it a go and keep you posted!

 

[Donamy]

Use this config for the Ultra OBSS for SSU 1.25

[CONFIG]
MeshName =SSU\OBSS
Size = 10
Empty_Mass = 1627
Fuel_Mass = 0
Isp = 0
Main_Thrust = 0
Retro_Thrust = 0
Hover_Thrust = 0
Attitude_Thrust = 0
Cross_Section = (16.,16.,16.)
LAND_PT1 = (0,-2,1)
LAND_PT2 = (-1,-2,-1)
LAND_PT3 = (1,-2,-1)
Camera = (0.0,0.0,-7.53)
Visible = 1
CW_Z_POS = 0.2
CW_Z_NEG = 0.5
CW_X = 1.5
CW_Y = 1.5
 
[PARENT_ATTACH_0] ;obssPWP
NAME="Astronaut"
POS=(-0.074,-0.206,-7.195)
DIR=(-0.331010538454927,-0.943627057386433,0)
ROT=(0,0,1)
RANGE=50.
ID="GS"
[CHILD_ATTACH_0] ; To MPM's
POS = (-0.05,-0.15,1.57)
DIR = (0,-1,0)
ROT = (0,0,1)
ID = "OS"
 
[CHILD_ATTACH_1] ; FWD RMS grapple fixture
POS = (0,0.26,7.23)
DIR=(0,1,0)
ROT = (0,0,-1)
ID="GS"
RANGE=5
 
[CHILD_ATTACH_2] ; Mid RMS grapple fixture
POS = (0,0.27,1.20)
DIR = (0,1,0)
ROT = (0,0,-1)
ID = "GS"
RANGE =5

 

[SiameseCat]

BenSisko: I think the OBSS position is a bug with SSU, not anything in the scenario file.

 

[Donamy]

SC,

The OBSS in the STS-122 addon has different attachment coods, it is attached to MPMs that are attached to a dummy attachment in the payload bay. It was done that way in the SSU 1.06. The OBSS config above is the one used in the SSU 1.25 release, and should fix the OBSS problem anyway.

 

[SiameseCat]

There might be additional problems relating to the different config files, but there is a bug in SSU where the OBSS is initially displayed in the deployed position; the easiest way to see this is to start the STS-126 launch scenario and look at the OBSS position.
The bug occurs because the OBSS attachment position is only updated after the first timestep, so if the scenario is initially paused, the OBSS position will be incorrect.

 

[Donamy]

I see.

Also I was wondering if the grappling could be made to, unattach the OBSS from the MPMs, then grapple with the RMS, without releasing it first.