Orbiter-Forum  

Go Back   Orbiter-Forum > Orbiter Space Flight Simulator > MFD Questions & Help
Register Blogs Orbinauts List Social Groups FAQ Projects Mark Forums Read

MFD Questions & Help Post your questions here for help with the Multi-Function Displays.

Reply
 
Thread Tools
Old 09-28-2018, 01:15 PM   #16
Abdullah Radwan
Orbinaut
Default

Quote:
Originally Posted by dgatsoulis View Post
 Here is a video of the flight from LEO to the target from the scenario you posted. Added a lua script showing dV expenditure and time.

Rendezvous with a target in a Distant Retrograde Orbit (DRO) around the Moon 2 - YouTube

I've been thinking of a different way to perform this flight using two or three instances of Lagrange MFD. I'll give it a shot later and see how it goes.
Thanks for doing the video! I've applied it and I successfully meet with PPE and dock the first piece of LOP!



But I didn't succeed with another flight (Deliver airlock module). I end up with 32M away and very little fuel (1000 KG) wasted while trying to approach. I add a 10 m/s and after some time it got back to zero. In the sucessfull attempt, I end up also 32M away but with much more fuel (4000 KG) and when add 10 m/s it increases to 20 m/s (So like free boost). Note that Orion has got 1160dv after TLI burn (After separate from SLS). The scenario is attached before TLI burn.
Attached Files
File Type: scn Before TLI.scn (9.2 KB, 2 views)
Abdullah Radwan is offline   Reply With Quote
Thanked by:
Old 09-28-2018, 02:47 PM   #17
dgatsoulis
Orbinaut
 
dgatsoulis's Avatar
Default

Quote:
Originally Posted by Abdullah Radwan View Post
 Thanks for doing the video! I've applied it and I successfully meet with PPE and dock the first piece of LOP!



But I didn't succeed with another flight (Deliver airlock module). I end up with 32M away and very little fuel (1000 KG) wasted while trying to approach. I add a 10 m/s and after some time it got back to zero. In the sucessfull attempt, I end up also 32M away but with much more fuel (4000 KG) and when add 10 m/s it increases to 20 m/s (So like free boost). Note that Orion has got 1160dv after TLI burn (After separate from SLS). The scenario is attached before TLI burn.
As I've mentioned before, I don't have the SLS installed, so I can't note the Orion's dv at any point.

To try this, I need a scenario with two Deltagliders in it. One that is the "source" vessel and one that is the "target" vessel. I also need a dv budget for the "source" vessel (which you kind of provided: "1160dv after the TLI burn").

You mentioned here that:
Quote:
I don't know how to replace vessels.
I'll show you how to do it here, so that in the future, you can provide example scenarios without other people needing to download and install addons that they might not want or need.

Two notes before we proceed:

1. I don't mean to sound patronizing or anything like that. This is just to make it easier for you to get help when you post a navigation problem in Orbiter Forum.

2. I don't mean any disrespect to the SLS team. It's a magnificent, very well made addon and a great many thanks to all involved in creating it. It's just that it doesn't "fit" in my current Orbiter installation and I don't want to have to download it, just to solve a navigation problem.

With that said, let's begin. Here is the scenario you posted. I've added comments on what "stays", what "goes" and what changes. Here is a brief summary:
1. Between the BEGIN_DESC - END_DESC lines, enter a simple description of what the objective is.
2. The solar system in the BEGIN_ENVIRONMENT-END_ENVIROMENT lines is addon-specific, so it needs to change to Orbiter's default Sol system.
3. Everything with a "Landed" status needs to go. No need for those ships in the scenario.
4. If there are any ships attached or docked to each other, just keep one of them. The first in scenario order.

Code:
BEGIN_DESC ; 
StateSaver Autosave:


System Time:

Fri Sep 28 14:39:22 2018


Simulator MJD:

61396.242742


Focus Vessel:

SLS


Relative Body:

Earth


Altitude:

244.359k



END_DESC

;The lines above should change to:
;BEGIN_DESC
;Rendezvous with the Target vessel
;END_DESC

BEGIN_ENVIRONMENT
  System Sol_SLS
  Date MJD 61396.2427453525
  Help SLS Block 1B Cargo Launch Pad
END_ENVIRONMENT

;The lines above should change to:
;BEGIN_ENVIRONMENT
;  System Sol
;  Date MJD 61396.2427453525
;END_ENVIRONMENT

BEGIN_FOCUS
  Ship SLS ; Change to Ship Source
END_FOCUS

BEGIN_SHIPS
SLS:Multistage2015 ; Change to  Source:Deltaglider
  STATUS Orbiting Earth
  RPOS 3575537.738 -246687.364 -5560232.611
  RVEL 7604.1184 872.4548 4301.0132
  AROT 11.507 -60.186 -0.623
  VROT -0.0049 0.0467 0.0000
  AFCMODE 7
  PRPLEVEL 0:0.680146 ;Everything below this line can go
  THLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBTESTNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_EM2_Orion_GNC.txt
  CONFIGURATION 1
  COMPLEX 
  CURRENT_BOOSTER 7
  CURRENT_STAGE 2
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 0
  MET 3484.245
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 477.073395
  STAGE_STATE 2
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 200.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
END
vab:SLSVABEM2 ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6515520 28.5843740
  HEADING 76.01
  ALT -0.284
  AROT 37.074 -69.680 25.299
  AFCMODE 7
  NAVFREQ 0 0
  XPDR 0
  Light 1350565888 
  DOOR1 0 0.0000
  DOOR2 0 0.0000
  DOOR3 0 0.0000
  DOOR4 0 0.0000
  DOOR5 0 0.0000
  DOOR6 0 0.0000
  EM1A 0 0.0000
  EM1B 0 0.0000
  EM1C 0 0.0000
  EM1D 0 0.0000
  EM1E 0 0.0000
  EM1F 0 0.0000
  EM1G 0 0.0000
  EM1H 0 0.0000
  EM1J 0 0.0000
  EM1K 0 0.0000
END
SLSTOWER2016EM2:SLSTOWER2016EM2  ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6208906 28.6272639
  HEADING 180.26
  ALT 75.714
  AROT -117.993 -4.170 171.728
  AFCMODE 7
  NAVFREQ 0 0
  XPDR 0
  CAA 0 0.0000
  LAUNCH 0 0.0000
  TOUCH -75.9000 
  BEACON 0 
END
LP39_SLS:SLS_PadA  ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6208910 28.6267320
  HEADING 270.00
  ALT 1.997
  AROT -180.000 80.621 118.627
  AFCMODE 7
  NAVFREQ 0 0
END
SPOTLIGHT1:spotlight2  ;Status landed, This goes
  STATUS Landed Earth
  POS -29.1959147 2.4561787
  HEADING 66.68
  ALT 0.186
  AROT 25.070 -22.265 75.772
  ATTACHED 0:0,LP39_SLS
  AFCMODE 7
  NAVFREQ 0 0
  SPT 1 300.0000 1.0472
  PAT 28.0000 24.0000 47.7000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
  GBL 0.48971 0.51309
END
SPOTLIGHT2:spotlight2  ;Status landed, This goes
  STATUS Landed Earth
  POS -29.3783550 2.4074486
  HEADING 66.68
  ALT 0.186
  AROT 25.110 -22.449 75.730
  ATTACHED 0:1,LP39_SLS
  AFCMODE 7
  NAVFREQ 0 0
  SPT 1 300.0000 1.0472
  PAT 94.2500 40.0000 50.2500 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
  GBL 0.52019 0.65339
END
SPOTLIGHT3:spotlight2  ;Status landed, This goes
  STATUS Landed Earth
  POS -29.8439529 2.2257810
  HEADING 66.66
  ALT 0.186
  AROT 25.244 -22.932 75.661
  ATTACHED 0:2,LP39_SLS
  AFCMODE 7
  NAVFREQ 0 0
  SPT 1 300.0000 1.5708
  PAT -36.0000 40.0000 55.0000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
  GBL 0.58580 0.39287
END
SPOTLIGHT4:spotlight2  ;Status landed, This goes
  STATUS Landed Earth
  POS -30.5357169 1.9577504
  HEADING 66.64
  ALT 0.186
  AROT 25.437 -23.652 75.557
  ATTACHED 0:3,LP39_SLS
  AFCMODE 7
  NAVFREQ 0 0
  SPT 1 300.0000 1.0472
  PAT -36.0000 40.0000 -57.5000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
  GBL 0.67167 0.16119
END
SPOTLIGHT5:spotlight2  ;Status landed, This goes
  STATUS Landed Earth
  POS -35.1000667 0.9537060
  HEADING 66.58
  ALT 0.186
  AROT 26.650 -28.108 74.141
  ATTACHED 0:4,LP39_SLS
  AFCMODE 7
  NAVFREQ 0 0
  SPT 1 300.0000 0.3491
  PAT 57.0000 24.0000 -56.5000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
  GBL 0.69450 0.96209
END
SPOTLIGHT6:spotlight2  ;Status landed, This goes
  STATUS Landed Earth
  POS -36.6896990 0.5215900
  HEADING 66.57
  ALT 0.186
  AROT 27.139 -29.681 73.670
  ATTACHED 0:5,LP39_SLS
  AFCMODE 7
  NAVFREQ 0 0
  SPT 1 300.0000 1.0472
  PAT 95.5000 37.0000 -54.7500 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
  GBL 0.58791 0.88999
END
WATERTOWER:SLS\WATERTOWER  ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6198650 28.6281920
  HEADING 0.00
  ALT 1.997
  AROT 61.695 4.479 8.250
  AFCMODE 7
  NAVFREQ 0 0
END
LIGHTNING1:SLS\LIGHTNINGTOWER  ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6221750 28.6274220
  HEADING 0.00
  ALT -0.194
  AROT 61.308 4.534 8.218
  AFCMODE 7
  NAVFREQ 0 0
  XPDR 0
END
LIGHTNING2:SLS\LIGHTNINGTOWER  ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6194350 28.6275920
  HEADING 0.00
  ALT -0.194
  AROT 61.308 4.535 8.220
  AFCMODE 7
  NAVFREQ 0 0
  XPDR 0
END
LIGHTNING3:SLS\LIGHTNINGTOWER  ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6198650 28.6257520
  HEADING 0.00
  ALT -0.194
  AROT 61.310 4.534 8.220
  AFCMODE 7
  NAVFREQ 0 0
  XPDR 0
END
Orion:Orion-MPCV\Orion-MPCV  ;This is attached to the SLS. We have kept the SLS, so this can go. 
  STATUS Orbiting Earth
  RPOS 3575555.646 -246685.316 -5560222.555
  RVEL 7604.1184 872.4548 4301.0132
  AROT 11.507 -60.186 -0.623
  VROT -0.0049 0.0467 0.0000
  ATTACHED 1:0,SLS
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
  XPDR 468
  MODE 0
END
CRAWLER:SLSCRAWLERNEW ;Status landed, This goes
  STATUS Landed Earth
  POS -80.6209190 28.6170143
  HEADING 358.05
  ALT -0.137
  AROT 60.670 6.591 7.487
  AFCMODE 7
  NAVFREQ 0 0
END
PPE_MODULE:NEWPPB ;This is the Target. Change to: Target:Deltaglider
  ANT1 1 0.0000 ;this line goes (addon-specific)
  AIRLOCK 1 0.0000  ;this line goes (addon-specific)
  IONARM 1 0.0000  ;this line goes (addon-specific)
  PANEL1 1 1.0000  ;this line goes (addon-specific)
  SOLP 0 0.0000 1 0.7913  ;this line goes (addon-specific)
  PANELEXT 1 1.0000  ;this line goes (addon-specific)
  PANELEND 1 1.0000  ;this line goes (addon-specific)
  eng_conf 0   ;this line goes (addon-specific)
  STATUS Orbiting Sun
  RPOS 115242127.272 15130892.303 147424553167.389
  RVEL -31584.6029 9.9831 459.2309
  AROT 72.521 81.738 -7.939
  VROT 0.0177 0.0030 -0.0000
  AFCMODE 7
  PRPLEVEL 0:0.875865
  DOCKINFO 0:1,HAB_MODULE  ;this line goes 
  NAVFREQ 0 0
  XPDR 0
END
HAB_MODULE:HAB1 ;Docked to PPE_MODULE. This goes, we have kept the PPE as the Target
  STATUS Orbiting Sun
  RPOS 115242119.580 15130893.369 147424553167.724
  RVEL -31584.6031 9.9831 459.2285
  AROT 72.521 81.738 -7.939
  VROT 0.0177 0.0030 -0.0000
  AFCMODE 7
  DOCKINFO 1:0,PPE_MODULE
  NAVFREQ 0 0
END
;The rest of the ships go. Either addon-specific or attached to vessels already kept.
sls_2016/spacecraftadapter:Stage
  STATUS Orbiting Earth
  RPOS 3575554.084 -246685.495 -5560223.432
  RVEL 7604.1184 872.4548 4301.0132
  AROT 11.507 -60.186 -90.623
  VROT 0.0467 0.0049 0.0000
  ATTACHED 0:1,SLS
  AFCMODE 7
  NAVFREQ 0 0
END
SLS_2016\NEWUSA1:Stage
  STATUS Orbiting Earth
  RPOS 3575544.019 -246686.646 -5560229.083
  RVEL 7604.1184 872.4548 4301.0132
  AROT 11.507 -60.186 -90.623
  VROT 0.0467 0.0049 0.0000
  ATTACHED 0:2,SLS
  AFCMODE 7
  NAVFREQ 0 0
END
AIRLOCK_MODULE:dsg1
  STATUS Orbiting Earth
  RPOS 3575544.887 -246686.546 -5560228.596
  RVEL 7604.1184 872.4548 4301.0132
  AROT 11.507 -60.186 -90.623
  VROT 0.0467 0.0049 0.0000
  ATTACHED 0:3,SLS
  AFCMODE 7
  NAVFREQ 0 0
END
Orion-LAS:Orion-MPCV\Orion-MPCV-LAS
  STATUS Landed Earth
  POS -71.1824254 28.1278706
  HEADING 98.85
  ALT 1.988
  AROT -28.481 -73.471 89.066
  AFCMODE 7
  NAVFREQ 0 0
END
Wreck:AresWreck
  STATUS Orbiting Earth
  RPOS -55515261.866 64002497.845 -7946202.336
  RVEL -26945.8024 35265.1233 -5453.0618
  AROT 21.344 -12.900 1.646
  VROT 0.4458 -0.9763 -1.6906
  AFCMODE 7
  PRPLEVEL 1:0.997920
  THLEVEL 1:1.000000
  NAVFREQ 0 0
END
END_SHIPS

;no need for any of these lines below
BEGIN_DX9ExtMFD
END

BEGIN_ReFuelMFD
  SCENARIO_TREE 
    NAMED Computers
    END_NODE 
  END_NODE 
END
So the scenario above turns into:

Code:
BEGIN_DESC
Rendezvous with the Target vessel
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 61396.2427453525
END_ENVIRONMENT

BEGIN_FOCUS
  Ship Source
END_FOCUS

BEGIN_SHIPS
Source:Deltaglider
  STATUS Orbiting Earth
  RPOS 3575537.738 -246687.364 -5560232.611
  RVEL 7604.1184 872.4548 4301.0132
  AROT 11.507 -60.186 -0.623
  VROT -0.0049 0.0467 0.0000
  AFCMODE 7
  PRPLEVEL 0:0.680146
END
Target:Deltaglider
  STATUS Orbiting Sun
  RPOS 115242127.272 15130892.303 147424553167.389
  RVEL -31584.6029 9.9831 459.2309
  AROT 72.521 81.738 -7.939
  VROT 0.0177 0.0030 -0.0000
  AFCMODE 7
  PRPLEVEL 0:0.875865
  NAVFREQ 0 0
  XPDR 0
END
END_SHIPS
One last step. Here is where you provide the dv budget for the "Source" ship. If you have BurnTimeCalcMFD installed, run the scenario you created, open BTC and set the fuel of the "Source" ship with the scenario editor.
Also add a few kg of RCS. Exit and open the (Current State).scn file.
Find the line that starts with PRPLEVEL in the "Source" ship, copy it and paste it over the same line in the scenario you created.

If you don't have BTC or don't know how to set the fuel, that's fine. A simple "Please set the 'Source' vessel's fuel for a dv of x m/s" will be enough.

There is no need to do any of this for this scenario, since I've already done it. As a dv budget for the "Source" Deltaglider, I am using 3150 (typical Earth-Moon TLI burn) + 1160 (which you provided in the previous post) = 4310 m/s.

Now a question, Why is your parking orbit like this?


Can you walk me through your launch process? Why select this particular date to launch and why this particular parking orbit?
dgatsoulis is offline   Reply With Quote
Thanked by:
Old 09-28-2018, 03:03 PM   #18
Abdullah Radwan
Orbinaut
Default

Quote:
Originally Posted by dgatsoulis View Post
 One last step. Here is where you provide the dv budget for the "Source" ship. If you have BurnTimeCalcMFD installed, run the scenario you created, open BTC and set the fuel of the "Source" ship with the scenario editor.
Also add a few kg of RCS. Exit and open the (Current State).scn file.
Find the line that starts with PRPLEVEL in the "Source" ship, copy it and paste it over the same line in the scenario you created.

If you don't have BTC or don't know how to set the fuel, that's fine. A simple "Please set the 'Source' vessel's fuel for a dv of x m/s" will be enough.

There is no need to do any of this for this scenario, since I've already done it. As a dv budget for the "Source" Deltaglider, I am using 3150 (typical Earth-Moon TLI burn) + 1160 (which you provided in the previous post) = 4310 m/s.

Now a question, Why is your parking orbit like this?


Can you walk me through your launch process? Why select this particular date to launch and why this particular parking orbit?
Thanks for posting the way. Sorry for any inconvinience caused.

I attached the wrong scenario . This is in the half of TLI burn. The correct scenario is attached below. The reason of the time is because it's the scheduled time for the airlock module.
Attached Files
File Type: scn Before TLI.scn (860 Bytes, 1 views)
Abdullah Radwan is offline   Reply With Quote
Thanked by:
Old 09-28-2018, 07:31 PM   #19
dgatsoulis
Orbinaut
 
dgatsoulis's Avatar
Default

Thanks, much easier and cleaner to work with now. You didn't enter the correct fuel, so I'll use the 4310 m/s posted previously.

The reason that I am asking is this:


As you can see in the left, the Moon is ~ 90 away from the intercection of the parking orbit an Moon orbit planes. That means that it will get there in ~7 days. A normal (non-free return) trajectory from LEO to the Moon takes about 5 days.

The RInc is small enough, so I can add a bit of plane change in the TLI to push the node closer. Anyway, I'll give it a try some time later and get back here with the results.

---------- Post added at 22:31 ---------- Previous post was at 18:17 ----------

Here is the latest video. The flight was similar to the previous one with a slight difference. I chose the Node as my "waypoint", instead of the periapsis, since it was closer to the target's periapsis. Other than that the mission was pretty much similar to the one before with a slightly higher TLI 'cause of the planes misalignment.

A single burn from LEO got me to less than 7000 km away from the target, with no MCCs on the way there.
Rendezvous occured in 8 days, 20 hours using a total dv of just under 4 km/s.

So the Orion having 1160 m/s after the TLI can definitely get there.

(Video still uploading, will be available in ~30 minutes from the time of this post).



If IMFD's map prediction doesn't seem to be stable in your scenarios, remember that it works better with Nonspherical Gravity switched ON.

dgatsoulis is offline   Reply With Quote
Thanked by:
Reply

  Orbiter-Forum > Orbiter Space Flight Simulator > MFD Questions & Help


Thread Tools

Posting Rules
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
Forum Jump


All times are GMT. The time now is 02:48 AM.

Quick Links Need Help?


About Us | Rules & Guidelines | TOS Policy | Privacy Policy

Orbiter-Forum is hosted at Orbithangar.com
Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2007 - 2017, Orbiter-Forum.com. All rights reserved.