OFSS IV-pilot roll call

[Castor]

Couple of recent developments:

1) RV Orientation and Glideslope MFD have been added to the list of optional requirements.
2) The documentation is really falling behind. If someone can help me in making it, I would really appreciate it.
3) A request for a new subforum has been sent to the mods.

Quote:

Originally Posted by kamaz

 If by "target" you mean "Indian Ocean", I know how to do that... :D

I was thinking of something a bit more specific than an entire ocean...

here

here

.
But, yes, a precise reentry is not needed.

Quote:

Originally Posted by kamaz

 1. Projected flight date and window [in real time]

Projected launch date : May 24 (Saturday)
Completion date: May 28 (Wednesday)

Quote:

Originally Posted by kamaz

 2. Target orbit (PeA, ApA, Inc, LAN, etc.) and allowed deviations.

PeA= 800 km (error: 25km)
ApA= 800km (error: 15km)
Inc = 64° (error: 3°)
LAN = 105° (deviations do not matter)
Non-Spherical Gravity Sources must be turned on.

Quote:

Originally Posted by kamaz

 3. Who is responsible for the assembly of the launch vehicle and payload, i.e. will the OFSS-IV consortium deliver a pre-assembled vehicle to the launch pad, or is K1SS responsible for procurement and integration of the launch vehicle and payload? [i.e. who makes the launch scenario?]

Launch scenario will be available in the provided flight package.

Quote:

Originally Posted by kamaz

 4. Should the orbit circularization (periapsis raising) burn be performed using the payload's engines (if any), or using the upper stage engines. In case of the latter, please indicate whether the upper stage should be left attached to the payload or deorbited.

The second stage of the Themis has to be used for all burns, but only a maximum of 2 restarts are permitted.

Quote:

Originally Posted by kamaz

 5. Please indicate requested vehicle state at handover [e.g. KILLROT enabled/disabled].

1) All NAV modes disabled.
2) Zero angular velocity at time of save.

[kamaz]

Quote:

Originally Posted by Castor

 PeA= 800 km (error: 25km)
ApA= 800km (error: 15km)
Inc = 64° (error: 3°)
LAN = 105° (deviations do not matter)
Non-Spherical Gravity Sources must be turned on.

This is ecliptic frame or equatorial frame?

I'm sorry about asking so many questions, but I put this in a wrong orbit, we can close the project...

[Castor]

Sorry, I should have been more clear. All this is in the equatorial frame.

I also want to add this: the second stage of the Themis must remain attached to the command module at the end of the flight.

---------- Post added at 05:35 PM ---------- Previous post was at 05:32 PM ----------

Quote:

Originally Posted by kamaz

 BM-220 weights 10 tons. This means that for reasonable orbital altitudes, the payload could be increased by up to 3 tons without problems. (I'd like to have some reserve propellant.)

The reason I'm pointing this out is that this could allow to include power supply + altitude control in the first flight, simplifying further operations (i.e. no need to dock to with a spinning station).

Initially, I had planned to just send the command module bundled up in an XR5. Eventually, it was decided to go along with traditional "First launch-single module system". Also the CMG is to be docked with the airdock launched on the second mission.

[Pipcard]

Wait, how does one rendezvous with a station with only two engine restarts?
(keep in mind you will probably need to correct your orbit so that you can intercept it)

edit: oh, that's the first mission.

[Castor]

Quote:

Originally Posted by Pipcard

 Wait, how does one rendezvous with a station with only two engine restarts?

The first mission does not include any rendezvous, just the launch of the core module.

[mojoey]

Quote:

Originally Posted by Castor

 2) The documentation is really falling behind. If someone can help me in making it, I would really appreciate it.

Send me a PM with what you have, and I can take a look and help where I can.

[kamaz]

Could you check if the end result is supposed to look like that:



Because if so, then I have the mission worked out, and it's very simple. I can even write a step-by-step instruction how to fly it. Also note that I have 4.3tons of fuel left.

And, if all we need is BM201 sitting on top of Themis-A at CSSC then I can contribute the scenario.

Also, I propose that we give the station a name. I vote for Aurora in honor of Zarya(ISS).

[jedidia]

Quote:

3) A request for a new subforum has been sent to the mods.

You could just open a social group

Also, if I were you, I'd prepare a package with all IMS config files you are going to use, with unique names, preferably in its own subfolder, for all participants... just to make sure that everyone is on the same page. Weird stuff is known to happen when people played with their IMS installations and later forget they did it...

[kamaz]

Quote:

Originally Posted by Pipcard

 Wait, how does one rendezvous with a station with only two engine restarts?
(keep in mind you will probably need to correct your orbit so that you can intercept it)

edit: oh, that's the first mission.

Well... https://www.youtube.com/watch?v=_oaxeJD8wiE

[Castor]

Quote:

Originally Posted by kamaz

 Could you check if the end result is supposed to look like that:

{image}

Looking good.

Quote:

Originally Posted by kamaz

 Because if so, then I have the mission worked out, and it's very simple. I can even write a step-by-step instruction how to fly it. Also note that I have 4.3tons of fuel left.

It would be a good opportunity to learn for those beginners who still fly with non-spherical gravity sources off.

Quote:

Originally Posted by kamaz

 And, if all we need is BM201 sitting on top of Themis-A at CSSC then I can contribute the scenario.

For the sake of uniformity, it would be better that there is one scenario. If you are free to fly now, I will post the scenario right away on this thread.

Quote:

Originally Posted by kamaz

 Also, I propose that we give the station a name. I vote for Aurora in honor of Zarya(ISS).

Anybody second that ?

Quote:

Originally Posted by jedidia

 You could just open a social group

Also, if I were you, I'd prepare a package with all IMS config files you are going to use, with unique names, preferably in its own subfolder, for all participants... just to make sure that everyone is on the same page. Weird stuff is known to happen when people played with their IMS installations and later forget they did it...

Thanks for the tips.

[kamaz]

Quote:

Originally Posted by Castor

  If you are free to fly now, I will post the scenario right away on this thread.

Please do. I should be able to fly it on Saturday at the latest.

[Castor]

Okay, kamaz and ADSWNJ, here is the scenario for the first flight. It will be later included in the flight package:

BEGIN_DESC
Themis-A is primed for launch at T-100 seconds.
Launch MFD has already been set up for the correct orbit.
Good luck!
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 60219.7711306855
END_ENVIRONMENT

BEGIN_FOCUS
  Ship Themis-A
END_FOCUS

BEGIN_CAMERA
  TARGET Themis-A
  MODE Cockpit
  FOV 30.00
END_CAMERA

BEGIN_HUD
  TYPE Surface
END_HUD

BEGIN_MFD Left
  TYPE User
  MODE Themis Control
END_MFD

BEGIN_MFD Right
  TYPE User
  MODE LaunchMFD
  BOOLALT 0
  BOOLENG 0
  HOV 0
  BOOLLNC 0
  BOOLTGT 1
  BOOLHUD 1
  BOOLPTC 1
  BOOLCOR 1
  BOOLDAS 0
  BOOLLOWINC 0
  GCCONT 0
  ALOCK 0
  PVIEW 0
  INCL 1.12
  IFACT 0.50
  AFACT 10.00
  PEA 219990.98
  APA 219990.98
  GCSTEP 10.00
  TGT LaunchMFD-Probe-Themis-A
  TGTDISP 64>105q
END_MFD

BEGIN_SHIPS
loco01:SaganSpaceport\\loco01
  STATUS Landed Earth
  POS 169.5332697 -0.8578510
  HEADING 270.00
  AFCMODE 7
  NAVFREQ 0 0
  CradleP 0.00
  CradleT 0
  Angle 0.00
  SpeedT 0
  SpeedC 0
END
Crane:SaganSpaceport\\XR5_Crane
  STATUS Landed Earth
  POS 169.5270000 -0.8542000
  HEADING 90.00
  AFCMODE 7
  NAVFREQ 0 0
  X_P 0.50
  Y_P 0.00
  Z_P 0.50
  X_T 0.50
  Y_T 0.00
  Z_T 0.50
END
LPad:SaganSpaceport\\ThemL_Pad
  STATUS Landed Earth
  POS 169.5375920 -0.8578510
  HEADING 270.00
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
  Arms_P -0.000137
  Arms_T 0.000000
  Lights 0
END
Radar:SaganSpaceport\\Radar
  STATUS Landed Earth
  POS 169.5330990 -0.8597000
  HEADING 270.00
  AFCMODE 7
  NAVFREQ 0 0
END
BPad:SaganSpaceport\\Big_Pad
  STATUS Landed Earth
  POS 169.5321950 -0.8686880
  HEADING 180.00
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
  Lights 0
  Config -1
END
OFSS:IMS\Command_Modules\BM201_CONTROL_MODULE
  STATUS Landed Earth
  POS -95.7481615 1.3305911
  HEADING 66.60
  ATTACHED 3:0,Themis-A
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000
  NAVFREQ 0 0
  COMMAND 0 1
  TDPOINT 0,0,0 0,0,0 0,0,0
  EMPTYMASS 10000.000000
  MASSCENTER 0.000000 0.000000 0.000000
  PMI 8.150000 8.150000 2.300000
  CONSUMABLES 0.0001 0.0001 0 0.0001 0.0001 0 0.0001 0.0001 0
  TEMPERATURES -1:298.00:273.91
  HEATING -1
  THGROUPLEVELS 0 0 0 0 
  CREW 2 0
  ENERGY 396000000.000000
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
  MFC 0 0 0 -1 -1 -1 -1
END
Themis-A:Themis-A\Themis_5x8
  STATUS Landed Earth
  POS 169.5375920 -0.8578510
  HEADING 90.00
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000
  NAVFREQ 0 0
  PL_DESCRIPTION OFSS 0.000 0.000 27.000 -0.0000 -0.0000 -1.0000 0.0000 1.0000 0.0000 0
  IN_JETTISON 0 0
  J_MARKER 0.000000
  FC_Config 250000.035285 90.000016 0 0 44.100000
  FC_State 0 0.000000 0.000000
  LV_State 1 1 1 1 0.000000 1
  LV_Config 2 1 1
END
LaunchMFD-Probe-Themis-A:LaunchMFD-Probe
  STATUS Orbiting Earth
  RPOS -2870250.93 962552.54 6337780.71
  RVEL -1841.726 7049.499 -1902.258
  AROT 0.00 -0.00 0.00
  AFCMODE 7
  NAVFREQ 0 0
END
END_SHIPS

BEGIN_uap
END

---------- Post added at 08:48 AM ---------- Previous post was at 08:33 AM ----------

Date of completion for first mission: May 27 (Tuesday)
Date of launch of second mission: May 30 (Friday)

ADSWNJ, please confirm that you will be acting backup for the first mission, and also post if you are ready to go ahead with the second mission on May 30.

---------- Post added at 09:37 AM ---------- Previous post was at 08:48 AM ----------

One more thing: don't forget to check out the new IMS RC9

[Loru]

Are you planning to fly Themis manually, using it's AP or LaunchMFD autopilot? I'm not sure it'll work with LaunchMFD autopilot (It uses thrust vector control instead of regular RCS for first stage ascent)

[Castor]

Quote:

Originally Posted by Loru

 Are you planning to fly Themis manually, using it's AP or LaunchMFD autopilot?

I think that kamaz will also use the Themis's default AP. Personally, in all my test flights, I used the default AP, which is why I have set the left MFD to Themis Control in the scenario.

[kamaz]

LaunchMFD to calculate heading, Themis AP to fly.