New Release "Artemis 8" using Dragon

barrygolden

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I walk by a shrink wrapped Lunar Dragon everyday here at Space X. there is talk of doing a Lunar Dragon with fuel tanks in the SM and using the Super Draco's. I'm sure you still would need a rocket stage like the one you did to do most of the landing burn then drop off and the Draco's would take over and landing legs fold down
 

francisdrake

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The design of the upper stage resembles the Fregat used by the Soyuz-2 rocket. Amazing!

A propulsive upper stage is probably the better solution, as it will use hypergolic fuel and will not be affected by boil-off effects.

I calculated the tanks sizes based on the Dragon mass and dV's required and came up with sizes strikingly close to the Russian Fregat upper stage. I think the Fregat is a very useful and versatile space hardware, so I modeled the SPS close to the Fregat's design. :)
 
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Glad if you like it! As N_Molson wrote, man-rating the FalconHeavy is not required, as the crew launch is on a Falcon 9. Only the upper stage will have contact to the Dragon, and this stage is technically - as far as I know - identical to the Falcon 9 upper stage.

Still a lot of teaking would be required. For example the Dragon's docking port need to withstand the acceleration load during the upper stage burns. The scenarios were made to see if Zubrin's theory is plausible. Orbiter is a great tool simulate such missions.
For some reason I was having fun, and decided to attach the SPS thing, onto dragon itself (using the trunk). Well, let's just say it didn't go well. Anybody got any ideas. Here's my scn thing at the moment.

EDIT: I really liked the mod, the only reason why I'm doing this is just for fun.

Code:
BEGIN_DESC
Double launch of a Falcon9 with a Dragon capsule and an empty FalconHeavy from the Cape.
Press 'V' to activate the Falcon9.


The FalconHeavy will follow on autopilot a minute later.

When in orbit use the Falcon9's second stage to align orbit inclination with the FalconHeavy and synchronize orbits until docking.

When in orbit briefly switch to FaclonHeavy and jettison the payload. It will automatically re-dock to the stage, now being ready for docking of the Dragon.
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 62333.563889
  CONTEXT SpaceX
END_ENVIRONMENT

BEGIN_FOCUS
  Ship Falcon9
END_FOCUS

BEGIN_CAMERA
  TARGET Falcon9
  MODE Extern
  POS 5.619704 60.802958 -54.056064
  TRACKMODE Ground Earth
  GROUNDLOCATION -80.62180 28.62847 104.21
  FOV 55.00
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 Equator
  ALT
  REF Earth
END_MFD

BEGIN_ATTACHMENT
C 0 0 -1.4  0 0 -1  0 1 0  TRK    
END_ATTACHMENT

BEGIN_SHIPS
Strongback:FalconHeavy/lc39a_strongback_h
  STATUS Landed Earth
  POS -80.6041192 28.6082840
  HEADING 0.00
  ALT 21.500
  AROT 61.716 4.483 8.266
  AFCMODE 7
  PRPLEVEL 0:1.000000
  THLEVEL 0:1.000000
  NAVFREQ 0 0
  ANM 0.0500 0.0071 0.0057 1.0000
  STTS 3 0
END
FalconHeavy:FalconHeavy\f9h_star48
  STATUS Landed Earth
  POS -80.5771995 28.5619578
  HEADING 10.00
  ALT 38.117
  AROT 144.880 -8.807 -4.538
  ATTACHED 0:0,Strongback
  AFCMODE 7
  PRPLEVEL 0:1.000000 2:1.000000 3:1.000000
  NAVFREQ 0 0
  FAIRS 0 0.0000 0 0
  SOST 0 0 0 0 0 0.0 1 1
;  SOPR -0.5061 200000.0 200000.0 65000.0 39559.0 175000.3 ASDS LZ2 LZ1
  SOPR 0 200000.0 200000.0 65000.0 39559.0 175000.3 ASDS LZ2 LZ1
  XFID 0.0000 409500.0000 13 33 00 1
END
SPS:Artemis8\SPS
  STATUS Landed Earth
  POS -80.6208892 28.626934
  HEADING 23.64
  ALT 0.952
  AROT 57.776 -18.826 8.898
  ATTACHED 0:0,Dragon
  AFCMODE 7
  PRPLEVEL 0:1.000000
END
ASDS:FalconHeavy/barge
  STATUS Landed Earth
  POS -74.0140000 27.8100000
  HEADING 90.00
  ALT 0.367
  AROT 0.000 -74.014 62.190
  AFCMODE 7
  NAVFREQ 0 0
END
LZ1:FalconHeavy\landingpad
  STATUS Landed Earth
  POS -80.5450100 28.4837780
  HEADING 90.00
  ALT 0.500
  AROT 0.000 -80.544 61.514
  AFCMODE 7
  NAVFREQ 0 0
END
LZ2:FalconHeavy\landingpad
  STATUS Landed Earth
  POS -80.5438200 28.4879880
  HEADING 90.00
  ALT 0.500
  AROT 0.000 -80.544 61.514
  AFCMODE 7
  NAVFREQ 0 0
END
Dragon:DM2/dm2_capsule
  STATUS Landed Earth
  POS -80.6208892 28.626934
  HEADING 23.64
  ALT 0.952
  AROT 57.776 -18.826 8.898
  ATTACHED 0:0,Falcon9
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
  HTCH 0 0.0000 0 0.0000 2 1.0000 0 0.0000
  PARA 2 1.0000 0.5000 0.0000 3 1.0000 0.0000 0
  TRGT 0 0 0
  PYLD 0 0 0.0000 0 0 0.0010 0 1000.0 0.0000 0.0000
  BEAC 0 0 0
END
Falcon9:Falcon9R_V12\f9_v12_drg2
  STATUS Landed Earth
  POS -80.6208892 28.626934
  HEADING 10.00
  ALT 41.199
  AROT 148.742 -8.484 -5.118
  ATTACHED 0:0,Strongback9
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000
  NAVFREQ 0 0
  FAIRS 1
  SOST 0 0 0 0 1 0 1
;  SOPR -0.5061 200000.0 200000.0 65000.0 39559.0 NULL NULL NULL NULL
  SOPR 0 180000.0 180000.0 65000.0 NULL NULL ASDS NULL NULL
  XFID 0.0000 409500.0000 12 51 30 1
END
Strongback9:Falcon9R_V12\lc39a_strongback_r
  STATUS Landed Earth
  POS -80.6208650 28.6272240
  HEADING 0.00
  ALT 33.200
  AROT 61.696 4.478 8.249
  AFCMODE 7
  PRPLEVEL 0:1.000000
  THLEVEL 0:1.000000
  NAVFREQ 0 0
  ANM 0.0000 0.0000 0.0000 0.0000 1.0000
  STTS 0 0 2
  ARMVIS 1
  HEADING 0.00
  ALT 21.500
  AROT 61.716 4.483 8.266
  AFCMODE 7
  PRPLEVEL 0:1.000000
  THLEVEL 0:1.000000
  NAVFREQ 0 0
  ANM 0.0500 0.0071 0.0057 1.0000 1.0000
  STTS 3 0 2
END
END_SHIPS
 

Sbb1413

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Yet another @DDASSSSS problem. You should properly check the "Doc" folder, since there's a workaround of a known bug.
 
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For some reason I was having fun, and decided to attach the SPS thing, onto dragon itself (using the trunk). Well, let's just say it didn't go well. Anybody got any ideas. Here's my scn thing at the moment.

EDIT: I really liked the mod, the only reason why I'm doing this is just for fun.

Code:
BEGIN_DESC
Double launch of a Falcon9 with a Dragon capsule and an empty FalconHeavy from the Cape.
Press 'V' to activate the Falcon9.


The FalconHeavy will follow on autopilot a minute later.

When in orbit use the Falcon9's second stage to align orbit inclination with the FalconHeavy and synchronize orbits until docking.

When in orbit briefly switch to FaclonHeavy and jettison the payload. It will automatically re-dock to the stage, now being ready for docking of the Dragon.
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 62333.563889
  CONTEXT SpaceX
END_ENVIRONMENT

BEGIN_FOCUS
  Ship Falcon9
END_FOCUS

BEGIN_CAMERA
  TARGET Falcon9
  MODE Extern
  POS 5.619704 60.802958 -54.056064
  TRACKMODE Ground Earth
  GROUNDLOCATION -80.62180 28.62847 104.21
  FOV 55.00
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 Equator
  ALT
  REF Earth
END_MFD

BEGIN_ATTACHMENT
C 0 0 -1.4  0 0 -1  0 1 0  TRK   
END_ATTACHMENT

BEGIN_SHIPS
Strongback:FalconHeavy/lc39a_strongback_h
  STATUS Landed Earth
  POS -80.6041192 28.6082840
  HEADING 0.00
  ALT 21.500
  AROT 61.716 4.483 8.266
  AFCMODE 7
  PRPLEVEL 0:1.000000
  THLEVEL 0:1.000000
  NAVFREQ 0 0
  ANM 0.0500 0.0071 0.0057 1.0000
  STTS 3 0
END
FalconHeavy:FalconHeavy\f9h_star48
  STATUS Landed Earth
  POS -80.5771995 28.5619578
  HEADING 10.00
  ALT 38.117
  AROT 144.880 -8.807 -4.538
  ATTACHED 0:0,Strongback
  AFCMODE 7
  PRPLEVEL 0:1.000000 2:1.000000 3:1.000000
  NAVFREQ 0 0
  FAIRS 0 0.0000 0 0
  SOST 0 0 0 0 0 0.0 1 1
;  SOPR -0.5061 200000.0 200000.0 65000.0 39559.0 175000.3 ASDS LZ2 LZ1
  SOPR 0 200000.0 200000.0 65000.0 39559.0 175000.3 ASDS LZ2 LZ1
  XFID 0.0000 409500.0000 13 33 00 1
END
SPS:Artemis8\SPS
  STATUS Landed Earth
  POS -80.6208892 28.626934
  HEADING 23.64
  ALT 0.952
  AROT 57.776 -18.826 8.898
  ATTACHED 0:0,Dragon
  AFCMODE 7
  PRPLEVEL 0:1.000000
END
ASDS:FalconHeavy/barge
  STATUS Landed Earth
  POS -74.0140000 27.8100000
  HEADING 90.00
  ALT 0.367
  AROT 0.000 -74.014 62.190
  AFCMODE 7
  NAVFREQ 0 0
END
LZ1:FalconHeavy\landingpad
  STATUS Landed Earth
  POS -80.5450100 28.4837780
  HEADING 90.00
  ALT 0.500
  AROT 0.000 -80.544 61.514
  AFCMODE 7
  NAVFREQ 0 0
END
LZ2:FalconHeavy\landingpad
  STATUS Landed Earth
  POS -80.5438200 28.4879880
  HEADING 90.00
  ALT 0.500
  AROT 0.000 -80.544 61.514
  AFCMODE 7
  NAVFREQ 0 0
END
Dragon:DM2/dm2_capsule
  STATUS Landed Earth
  POS -80.6208892 28.626934
  HEADING 23.64
  ALT 0.952
  AROT 57.776 -18.826 8.898
  ATTACHED 0:0,Falcon9
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
  HTCH 0 0.0000 0 0.0000 2 1.0000 0 0.0000
  PARA 2 1.0000 0.5000 0.0000 3 1.0000 0.0000 0
  TRGT 0 0 0
  PYLD 0 0 0.0000 0 0 0.0010 0 1000.0 0.0000 0.0000
  BEAC 0 0 0
END
Falcon9:Falcon9R_V12\f9_v12_drg2
  STATUS Landed Earth
  POS -80.6208892 28.626934
  HEADING 10.00
  ALT 41.199
  AROT 148.742 -8.484 -5.118
  ATTACHED 0:0,Strongback9
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000
  NAVFREQ 0 0
  FAIRS 1
  SOST 0 0 0 0 1 0 1
;  SOPR -0.5061 200000.0 200000.0 65000.0 39559.0 NULL NULL NULL NULL
  SOPR 0 180000.0 180000.0 65000.0 NULL NULL ASDS NULL NULL
  XFID 0.0000 409500.0000 12 51 30 1
END
Strongback9:Falcon9R_V12\lc39a_strongback_r
  STATUS Landed Earth
  POS -80.6208650 28.6272240
  HEADING 0.00
  ALT 33.200
  AROT 61.696 4.478 8.249
  AFCMODE 7
  PRPLEVEL 0:1.000000
  THLEVEL 0:1.000000
  NAVFREQ 0 0
  ANM 0.0000 0.0000 0.0000 0.0000 1.0000
  STTS 0 0 2
  ARMVIS 1
  HEADING 0.00
  ALT 21.500
  AROT 61.716 4.483 8.266
  AFCMODE 7
  PRPLEVEL 0:1.000000
  THLEVEL 0:1.000000
  NAVFREQ 0 0
  ANM 0.0500 0.0071 0.0057 1.0000 1.0000
  STTS 3 0 2
END
END_SHIPS
Forgot to add a screen shoot of what the issue looks like so here it is. The SPS is sticking out and the engine is not facing the right direction basically.

Screenshot (154).png
 

ChrisRowland

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How would putting a Dragon on a Falcon Heavy and filling the trunk with fuel work? According to SX FH can deliver 16t to escape velocity. Given 7t for the dragon and trunk there's 9t for fuel in the trunk. Use the existing Dragon thrusters. I think that FH could get that lot to TLI, That gives a dV of about 2.5 km/s for LOI and TEI. Should be enough. Could be what @barrygolden was thinking of.
 

francisdrake

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0266.jpg

The Dragon capsule has 3 attachment points in the trunk (left, right,center).
To have a payload centered, the correct attachment point (2) shall be used:

SPS:Artemis8\SPS
..
ATTACHED 0:2,Dragon
...
END

But, as shown in the screenshot, the SPS is not designed to fit inside the trunk, it is too big and upside down.
____

To have a propulsion package inside the trunk, I played around with "Trunky", a tank and engine pallet in the trunk.
It would provide independent propulsion, using 2 redundant thrusters and its own fuel supply.
In case of a flight abort it would be jettisoned right away, not to hamper the escape of the Dragon.
However, as this would require launching on a man-rated FalconHeavy, I did not further follow-up this design.

0190_cr.jpg
 
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View attachment 25392

The Dragon capsule has 3 attachment points in the trunk (left, right,center).
To have a payload centered, the correct attachment point (2) shall be used:

SPS:Artemis8\SPS
..
ATTACHED 0:2,Dragon
...
END

But, as shown in the screenshot, the SPS is not designed to fit inside the trunk, it is too big and upside down.
____

To have a propulsion package inside the trunk, I played around with "Trunky", a tank and engine pallet in the trunk.
It would provide independent propulsion, using 2 redundant thrusters and its own fuel supply.
In case of a flight abort it would be jettisoned right away, not to hamper the escape of the Dragon.
However, as this would require launching on a man-rated FalconHeavy, I did not further follow-up this design.

View attachment 25393
For some reason the "Trunky" idea seems cool, any ideas on how to do it.
 

Max-Q

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To have a propulsion package inside the trunk, I played around with "Trunky", a tank and engine pallet in the trunk.
I have done exactly that, however with the older dragon2 addon. I have used it for lunar missions, a Venus flyby, and a mission to asteroid 2000 SG344.

as this would require launching on a man-rated FalconHeavy
Couldn't be any worse than a Saturn V with 7.6 million pounds of thrust, right?
Gemini-Titan missions experienced bad pogo on the first stage, and 8+ Gs at cutoff.
 

barrygolden

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I think you are own to somthing. I really like the idea of using the Dragon Like the Apollo CSM ... Would be nice to see the Dragon. it would be okay to have the small tanks stiking out of the sides a little
 

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