General Question A quick question about strapping booster rockets...

[Cornflake]

Hello all,

I'm writing a scenario for myself with a Delta Glider EX strapped onto the back of a Velcro rocket (as the EX can barely get off the ground on it's own ). Anyways, through reading the Velcro manual and cutting-and-pasting I have almost everything right. I have the DGex strapped on the back, with the booster offset a little bit off the mesh to look right, sitting at the location of the LC-39B launchpad. My only problem is that the booster and glider are sitting on the surface of the planet, which is partly below the launch pad. I'd like to somehow elevate the glider so it is sitting on the launch pad. The scenario editor was not much help in this respect because it would just cause it to fall back to the surface after raising it.

Take a look at this photo to visualize what I'm talking about:

Here is what my .scn file looks like... note I'm using the Velcro booster in "Paralell burn mode" as I think that's what I need for this kind of booster.

BEGIN_DESC
DeltaGlider Ex ready for takeoff.
END_DESC

BEGIN_ENVIRONMENT
  System SolSTS
  Date MJD 51983.5417635811
END_ENVIRONMENT

BEGIN_FOCUS
  Ship DGex-01
END_FOCUS

BEGIN_CAMERA
  TARGET DGex-01
  MODE Extern
  POS 5.02 -179.83 17.51
  TRACKMODE TargetRelative
  FOV 50.00
END_CAMERA

BEGIN_HUD
  TYPE Surface
END_HUD

BEGIN_MFD Left
  TYPE Surface
  SPDMODE 1
END_MFD

BEGIN_MFD Right
  TYPE Map
  REF Earth
  OTARGET ISS
  TRACK ON
END_MFD

BEGIN_PANEL
END_PANEL


BEGIN_SHIPS
ISS:ProjectAlpha_ISS
  STATUS Orbiting Earth
  RPOS -5988520.22 3056289.41 552201.97
  RVEL 3084.634 6522.247 -2645.351
  AROT 110.00 -10.00 80.00
  PRPLEVEL 0:1.000
  IDS 0:588 100 1:586 100 2:584 100 3:582 100 4:580 100
  NAVFREQ 0 0
  XPDR 466
END
DGex-01:DeltaGliderEX
  STATUS Landed Earth
  POS -80.6207625 28.6271620
  HEADING 71.46
  ATTACHED 0:1,Booster1
  RCSMODE 0
  PRPLEVEL 0:0.995 1:1.000 2:1.000
  THLEVEL 0:0.100
  NAVFREQ 94 524
  XPDR 0
  NOSECONE 0 0.0000
  GEAR 1 0.0000
  AIRLOCK 0 0.0000
  BAY 0 0.0000
  AIRB 0 0.0000
  LNAV 1
  LCOL 1
  LSTRB 1
  LLDG 0
  DOCK 0
  PAYL 0
  SKIN DGex_2
END
DGex_arm:SpacecraftSpacecraft3
  STATUS Landed Mercury
  POS -80.8325582 28.6270944
  HEADING 71.38
  ATTACHED 0:9,DGex-01
  NAVFREQ 0 0
  RCS 1
  CTRL_SURFACE 1
  CONFIGURATION 1
  CURRENT_PAYLOAD 0
  SEQ 0 -2 0.500000
  SEQ 1 2 0.000000
  SEQ 2 2 0.000000
  SEQ 3 2 0.500000
  SEQ 4 2 0.500000
  SEQ 5 -2 0.500000
END
Booster1:Velcro/ASRM
  STATUS Landed Earth
  BASE Cape Canaveral:3
  POS -80.6207830 28.6271900
  HEADING 0.00
  PRPLEVEL 0:1.000
  NAVFREQ 21 50
  CONFIGURATION 0
  PRIMEBOOSTER 1
  CENTERTHRUST 1
  PADBIAS 1.000
  TGT_HEADING 90.000
  PARALLELBURN 1 DGex-01 -2.0 -4.0 0.0 1.0  0.0 0.0
END
END_SHIPS

BEGIN_ExtMFD
END

 

[Cornflake]

Anyone?

 

[HiPotOk1978]

so your trying to boost it doing a H launch? can u get into orbit as is subtracting the cosmetic problems that are most than obvious?

 

[Bj]

You could try lowering the touchdown points of the vessel. That would make it appear 'raised' and level with the launch pad.

 

[wehaveaproblem]

How does velcro rockets and DGX work codewise? If they are spacecraft3 or multistage (which I doubt) then it's easy to adjust the CoG setting in the ini files. Not sure if either vessel has a similar setting?

 

[tblaxland]

I haven't used Velcro Rockets before but reading its manual, I think you will want to adjust the PADBIAS line. From the manual:

PADBIAS An offset to the Z-axis of our touchdown points, used to set the vehicle on a pad such as Pad 39A. Added directly to the touchdown point Z-axis, so to raise the vehicle up higher, you need a negative number.

 

[Cornflake]

Ah yes, thank you tblaxland that's what I'm looking for! I actually read through the Velcro manual several times over, kind of embarrassed I didn't see that parameter towards the end of the PDF :lol: Also I realized that boosters itself weren't enough to get this beast into orbit -- I decided the Energia was a bit more suitable:

Also, @wehaveaproblem: The DGex is a Spacecraft3.dll ship, and the Velcro rockets are custom coded CVEL vessels with configurable mass, fuel, etc.