OHM Mars Cargo Dragon

OrbitHangar · Jul 13, 2016

Author: brianj

Want to send a ton of stuff to Mars? A modified Cargo Dragon, equipped with 4 SuperDraco engines and 200kg extra fuel for propulsive landing on Mars, carrying 1000kg payload. Rudimentary Auto EDL targeting and landing. FalconHeavy launch with flyback recovery of all booster stages. Launch, Mars approach and EDL scenarios included. A rough "proof of concept" for the projected RedDragon mission.

Installation and operation notes in Doc/MarsCargoDragon/Mars_Cargo_Dragon_readme.txt

REQUIREMENTS
"Dragon DLL" add-on
http://www.orbithangar.com/searchid.php?ID=6795

Launch scenario requires:
"FalconHeavy" add-on
http://www.orbithangar.com/searchid.php?ID=6659

Big thanks to Donamy.

DOWNLOAD

turtle91 · Jul 13, 2016

Awesome...as usual !!
I have tested two times, and all went fine.
Full automtic landing near Olympus.
The first try was at 2.3 km "after" landing site.
Next test was 5.1 km "before" landing site.
This gives me better results compared to dragon earth reentries, where I am off at about 15 km mostly.
However, 2, 5 or 15 kms....all in short walking distance.
Very precise. A dream comes true....this will keep me busy during the next days....

Many thanks for another great addon. :thumbup:

rseferino · Jul 13, 2016

I was thinking all week payload could put a Falcon Heavy and find this. Thank you. :cheers:

BrianJ · Jul 14, 2016

Thanks for the response, guys. I kind of came across this by accident - I was just testing the FalconHeavy to see if it could get a Dragon to Mars. The Dragon handled the Mars entry so nicely, I thought it wouldn't take much to add some SuperDracos and tweak the landing algorithm to make it functional.
I reckon the EDL algorithm needs a lot more thought - it's not robust and won't handle non-nominal entry conditions very well! Still, it shows it can be done and sort of how it can work.

Cheers,
Brian

IronRain · Jul 14, 2016

Great work Brian (as always), just as I am planning my next set of Martian missions! :cheers:

rseferino said:
I was thinking all week payload could put a Falcon Heavy and find this. Thank you.

New video incoming...

Interceptor · Jul 18, 2016

Hey BrianJ,in the launch scenario of the Mars cargo dragon the core stage isn't landing on the ASDS,it keeps missing it.

BrianJ · Jul 18, 2016

Interceptor said:
Hey BrianJ,in the launch scenario of the Mars cargo dragon the core stage isn't landing on the ASDS,it keeps missing it.

Works ok for me, quite a long reentry burn and lands with 1300kg fuel remaining. Can you save the scenario just after core separation and post it here? I'll take a look. I note the ASDS isn't located exactly on the groundtrack.
Thanks,
Brian

Interceptor · Jul 18, 2016

Here you go.Thanks

Code:

BEGIN_DESC

END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 57399.4199971497
END_ENVIRONMENT

BEGIN_FOCUS
  Ship FalconHeavy
END_FOCUS

BEGIN_CAMERA
  TARGET FalconHeavy
  MODE Cockpit
  FOV 40.00
END_CAMERA

BEGIN_HUD
  TYPE Surface
END_HUD

BEGIN_MFD Left
  TYPE Surface
  SPDMODE 1
END_MFD

BEGIN_MFD Right
  TYPE Orbit
  PROJ Ship
  FRAME Ecliptic
  ALT
  REF Earth
END_MFD

BEGIN_SHIPS
SLC40:Falcon9H/slc40
  STATUS Landed Earth
  POS -80.5771995 28.5619578
  HEADING 10.00
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
  PST 0.1079 0.1841 2
  TOWER 1 1.0000
END
Dragon:dragon1\red_dragon1_capsule
  STATUS Orbiting Earth
  RPOS -5535155.50 3148315.02 1245308.80
  RVEL 894.846 3188.993 1253.510
  AROT 60.15 -31.31 -75.94
  VROT -1.97 -0.35 0.00
  ATTACHED 0:0,FalconHeavy
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 94 481
  SOLP 2 1.0000 0 0.0000
  HTCH 0 0.0000 0 0.0000 0 0.0000
  PARA 2 1.0000 0.5000 0.0000 0.0000 3 1.0000
  TRGT NULL 0 0 0 0 0 0 0
  PYLD 0 0 0 0 0 0.0010 0 1000.0 -1.0000 0.0000
END
FalconHeavy:Falcon9H\f9h_drg
  STATUS Orbiting Earth
  RPOS -5535160.78 3148307.48 1245304.47
  RVEL 894.846 3188.993 1253.510
  AROT 60.15 -31.31 -85.94
  VROT -2.00 0.00 0.00
  AFCMODE 7
  PRPLEVEL 2:0.945597 3:0.999987
  THLEVEL 0:0.000010 3:0.000001 12:1.000000
  NAVFREQ 0 0
  FAIRS 1 1.0000 1 1
  SOST 2 0 0 1 1 0.0
  SOPR 1.5970 200000.0 200000.0 65000.0 40000.0 175000.0 ASDS LZ2 LZ1
  XFID 0.0000 246069.8267
END
ASDS:Falcon9H/barge
  STATUS Landed Earth
  POS -74.0000000 27.7500000
  HEADING 90.00
  AFCMODE 7
  NAVFREQ 0 0
END
LZ1:Falcon9H\landingpad
  STATUS Landed Earth
  POS -80.5450100 28.4837780
  HEADING 180.00
  AFCMODE 7
  NAVFREQ 0 0
END
LZ2:Falcon9H\landingpad
  STATUS Landed Earth
  POS -80.5438200 28.4879880
  HEADING 90.00
  AFCMODE 7
  NAVFREQ 0 0
END
loco01:SaganSpaceport\\loco01
  STATUS Landed Earth
  POS 169.5370000 -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 0.999975
  Arms_T 1.000000
  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
Weather station:WS
  STATUS Landed Earth
  POS 169.5321950 -0.8686880
  HEADING 180.00
  AFCMODE 7
  NAVFREQ 0 0
END
FH_Stg1_Port:Falcon9H/f9h_stg1_port
  STATUS Orbiting Earth
  RPOS -5607650.42 2974185.54 1150351.12
  RVEL -622.869 -225.074 -643.415
  AROT 56.97 -73.28 46.03
  VROT -3.00 3.00 0.00
  AFCMODE 7
  PRPLEVEL 0:0.015040 1:0.937254
  THLEVEL 0:0.000136 1:0.000098 6:0.000136 7:0.000098
  NAVFREQ 0 0
  LEGS 0 0.0000 0.0000 0.0000 2.0000
  FINS 0 0.0000 0.5000 0.5000
  APST 2 0 0 1 3 0 0
  LPRM LZ2
END
FH_Stg1_Stbd:Falcon9H/f9h_stg1_starboard
  STATUS Orbiting Earth
  RPOS -5607654.57 2974618.88 1148436.82
  RVEL -620.502 -235.430 -634.383
  AROT 47.14 -72.10 154.58
  VROT -3.00 -3.00 0.00
  AFCMODE 7
  PRPLEVEL 0:0.015013 1:0.938633
  THLEVEL 1:0.000137 2:0.000116 4:0.000116 7:0.000137
  NAVFREQ 0 0
  LEGS 0 0.0000 0.0000 0.0000 2.0000
  FINS 0 0.0000 0.5000 0.5000
  APST 2 0 0 1 3 0 0
  LPRM LZ1
END
FH_Stg1_Centre:Falcon9H/f9h_stg1_centre
  STATUS Orbiting Earth
  RPOS -5535277.66 3146637.84 1244401.71
  RVEL 855.900 3053.422 1168.969
  AROT 124.47 37.74 -62.85
  VROT 5.00 -5.00 0.00
  AFCMODE 7
  PRPLEVEL 0:0.160354 1:0.795339
  THLEVEL 13:0.000157 15:0.000157 20:0.000156 22:0.000156 26:0.400000
  NAVFREQ 0 0
  LEGS 0 0.0000 0.0000 0.0000 0.0000
  FINS 0 0.0000 0.5000 0.5000
  APST 2 0 2 0 2 0 0
  LPRM ASDS
END
END_SHIPS

BEGIN_ExtMFD
END

BrianJ · Jul 18, 2016

Hi,
it looks like you're going to Polar orbit - FalconHeavy target inclination is set for 91.5deg - did you input required launch azimuth instead of required launch inclination? The ASDS is positioned for a launch to ~29deg inclination.
Cheers,
Brian

Interceptor · Jul 18, 2016

OOPS! yep your right,I did put the launch Azimuth to 91.5 deg,my mistake sorry about that,BTW thanks for the help,and this great addon.

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OHM Mars Cargo Dragon

OrbitHangar

Addon Comments

turtle91

Active member

rseferino

Orbiter amateur filmmaker

BrianJ

Addon Developer

IronRain

The One and Only (AFAIK)

Interceptor

Well-known member

BrianJ

Addon Developer

Interceptor

Well-known member

BrianJ

Addon Developer

Interceptor

Well-known member

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