OHM Falcon9R

Alexrey

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Brilliant addon, but does anyone else have a slight colour difference between the first and second stages?
 

BrianJ

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Hi Alex, you must have very good colour perception! Or my monitor contrast is too low, or something! I can't really see it, but photoshop tells me that the 2nd stage texture is 2/255 less yellow than the 1st stage. Attached is a zip with a replacement 2nd stage texture - any better?

Cheers,
Brian
 

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  • falcon9r_stg2dds_140828.zip
    53.2 KB · Views: 11

BrianJ

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Updated on OH.
Added CRS-4 scenario and recovery barge, fixed the 2nd stage RCS problem, delayed fairing separation, better re-entry burn and landing burn targeting.
 

Donamy

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Dragon payload for Falcon9R.
[ame="http://www.orbithangar.com/searchid.php?ID=6639"]RapidScat[/ame]
 

BrianJ

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UPDATED on OH
Better 1st stage landing burn targeting.
Changed CRS-4 launch date to 20 Sept.
 

BrianJ

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Thanks BrianJ, another excellent addon! I'm having a lot of fun with it.
You're very welcome. Yeah, I don't know why it's so fascinating to see that 1st stage going in reverse :lol:
More updates (mostly cosmetic) on OH soon.

---------- Post added 10-26-14 at 02:59 PM ---------- Previous post was 10-25-14 at 11:16 PM ----------

Now updated on OH
Added launch pads, landing pad, scenarios, adaptor mesh option, MaxQ compression wave, audio countdown and stage sep.callouts, 2s hold down on pad, optional Star48BV motor, includes OG2 sats, etc.
 

HawaiianBrian

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Hi guys,
thanks for the kind words. Always nice to know other folks find my add-on experiments interesting. I'll try and update the add-on on OH with the correct CRS-3 attachment point(thanks Don) and better documentation soon.

Yes, that's my feeling too.

Not much info on the web about the Flyback-EDL sequence, so I'm making it up as I go along.

The first version simply made the flyback burn to change the horizontal velocity to intercept the target, but with the very high 1st stage Apa. (due to the steep ascent profile) the reentry velocity was even greater than it is with this version.

The current version uses a "minimum energy ballistic trajectory" to intercept the target, which is more fuel efficient and reduces the reentry load, but as you observe, the reentry is still very rough (110 m/s^2 max. deceleration).

My initial reasoning was to conserve fuel by using aerobraking as much as possible. However, I think that making an extra burn between 40-30km alt. won't cost that much more fuel, and possibly reduce the final targeting/landing burn below 15km. So I think I may try that next.

There may also be horizontal/lateral targeting component to the final landing burn, too. So I'm going to see if I can make that work. But it will be more expensive fuel wise. Possibly quite a lot more expensive if you want to hover and translate sideways.

So, plenty of ideas I can play about with. If I can get the 1st stage to land back on the pad (within a few meters), I'll be happy!

Cheers,
Brian

This might help.I don't know if you have seen this....
http://aviationweek.com/space/nasa-spacex-share-data-supersonic-retropropulsion
 

BrianJ

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A little update on OH - new barge mesh and CRS5 launch scenario.
 

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  • barge_th.jpg
    barge_th.jpg
    52.8 KB · Views: 41

BrianJ

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CRS5 launch scenario for Jan 06 2015. Scenario starts at 11:00 UTC.
ISS vectors from JPL Horizons. Good luck SpaceX!

edit: .zip deleted
 
Last edited:

Urwumpe

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CRS5 launch scenario for Jan 06 2015. Scenario starts at 11:00 UTC.
ISS vectors from JPL Horizons. Good luck SpaceX!

Does it also have the grid fins of the first stage?
 

BrianJ

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CRS5 launch scenario for Saturday 10 Jan 2015, scenario starts 9.30 UTC.
ISS vectors from JPL Horizons.
 

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  • crs5_jan10_launch_150109.zip
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Interceptor

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Hey BrianJ I discovered a bug with the center first stage,after landing on the barge the engine doesn't cut off quick enough causing the rocket to move sideways away from the center X,but this doesn't happen with the Falcon heavy.
 

Donamy

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That's not a bug, it's a feature. More like RL. :lol:
 

Wolf

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I got CTD with all CRS scenarios when running on D3D9 client (no CTD with inline client)

here's the log file for CRS3 launch scenario

Code:
**** Orbiter.log
Build Aug 30 2010 [v.100830]
Timer precision: 3.66628e-007 sec
Found 1 joystick(s)
Module AtlantisConfig.dll .... [Build 100830, API 100830]
Module AtmConfig.dll ......... [Build 100830, API 100830]
Module DGConfigurator.dll .... [Build 100830, API 100830]
Module Rcontrol.dll .......... [Build 100830, API 100830]
Module ScnEditor.dll ......... [Build 100830, API 100830]
Module D3D9Client.dll ........ [Build 130512, API 100830]
Module OrbiterSound.dll ...... [Build 121120, API 100830]
Module Framerate.dll ......... [Build 100830, API 100830]
Module FlightData.dll ........ [Build 100830, API 100830]
Module ExtMFD.dll ............ [Build 100830, API 100830]
Module UnivPTG.dll ........... [Build 110305, API 100830]
---------------------------------------------------------------
>>> WARNING: Obsolete API function used: oapiRegisterMFDMode
At least one active module is accessing an obsolete interface function.
Addons which rely on obsolete functions may not be compatible with
future versions of Orbiter.
---------------------------------------------------------------
Module RPOP.dll .............. [Build 131222, API 100830]
Module ORBTGT.dll ............ [Build 140124, API 100830]
Module GPCMFD.dll ............ [Build 131213, API 100830]
Module DscovrMFD.dll ......... [Build 150205, API 100830]
Module AutoFCS.dll ........... [Build ******, API 050206]
Module transx.dll ............ [Build 100824, API 100823]

**** Creating simulation session
D3D9Client: [DirectX 9 Initialized]
D3D9Client: Sytem has XNA math support
D3D9Client: [3DDevice Initialized]
D3D9Client: [Compiling Effects for Shader Model 3.0]
D3D9Client: [Loading Stars]
D3D9Client: [Loading Constellations]
D3D9Client: [D3D9Client Initialized]
Module Sun.dll ............... [Build 100830, API 100830]
VSOP87(E) Sun: Precision 1e-006, Terms 554/6634
Module Mercury.dll ........... [Build 100830, API 100830]
VSOP87(B) Mercury: Precision 1e-005, Terms 167/7123
Module Venus.dll ............. [Build 100830, API 100830]
Module VenusAtm2006.dll ...... [Build 100830, API 100830]
VSOP87(B) Venus: Precision 1e-005, Terms 79/1710
Module Earth.dll ............. [Build 100830, API 100830]
Module EarthAtmJ71G.dll ...... [Build 100830, API 100830]
VSOP87(B) Earth: Precision 1e-008, Terms 2564/2564
Module Moon.dll .............. [Build 100830, API 100830]
ELP82: Precision 1e-005, Terms 116/829
Module Mars.dll .............. [Build 100830, API 100830]
Module MarsAtm2006.dll ....... [Build 100830, API 100830]
VSOP87(B) Mars: Precision 1e-005, Terms 405/6400
Module Phobos.dll ............ [Build ******, API 060425]
Module Deimos.dll ............ [Build ******, API 060425]
Module Galsat.dll ............ [Build 100217, API 100215]
Module Jupiter.dll ........... [Build 100830, API 100830]
VSOP87(B) Jupiter: Precision 1e-006, Terms 1624/3625
Module Io.dll ................ [Build 100217, API 100215]
Module Europa.dll ............ [Build 100217, API 100215]
Module Ganymede.dll .......... [Build 100217, API 100215]
Module Callisto.dll .......... [Build 100217, API 100215]
Module Satsat.dll ............ [Build 100215, API 100212]
Module Saturn.dll ............ [Build 100830, API 100830]
VSOP87(B) Saturn: Precision 1e-006, Terms 2904/6365
Module Mimas.dll ............. [Build 100215, API 100212]
SATSAT Mimas: Terms 113
Module Enceladus.dll ......... [Build 100215, API 100212]
SATSAT Enceladus: Terms 33
Module Tethys.dll ............ [Build 100215, API 100212]
SATSAT Tethys: Terms 101
Module Dione.dll ............. [Build 100215, API 100212]
SATSAT Dione: Terms 59
Module Rhea.dll .............. [Build 100215, API 100212]
SATSAT Rhea: Terms 68
Module Titan.dll ............. [Build 100215, API 100212]
SATSAT Titan: Terms 100
Module Iapetus.dll ........... [Build 100215, API 100212]
SATSAT Iapetus: Terms 605
Module Uranus.dll ............ [Build 100830, API 100830]
VSOP87(B) Uranus: Precision 1e-006, Terms 1827/5269
Module Miranda.dll ........... [Build ******, API 060425]
Module Ariel.dll ............. [Build ******, API 060425]
Module Umbriel.dll ........... [Build ******, API 060425]
Module Titania.dll ........... [Build ******, API 060425]
Module Oberon.dll ............ [Build ******, API 060425]
Module Neptune.dll ........... [Build 100830, API 100830]
VSOP87(B) Neptune: Precision 1e-006, Terms 391/2024
Finished initialising world
Module slc40r.dll ............ [Build 141019, API 100830]
Module Spacecraft3.dll ....... [Build ******, API 050206]
**** WARNING: Mesh file name not provided
D3D9Client::clbkStoreMeshPersistent() hMesh is NULL
---------------------------------------------------------------
>>> WARNING: Obsolete API function used: VESSEL::SetBankMomentScale
At least one active module is accessing an obsolete interface function.
Addons which rely on obsolete functions may not be compatible with
future versions of Orbiter.
---------------------------------------------------------------
**** WARNING: Mesh file name not provided
D3D9Client::clbkStoreMeshPersistent() hMesh is NULL
**** WARNING: Mesh file name not provided
D3D9Client::clbkStoreMeshPersistent() hMesh is NULL
Module f9.dll ................ [Build 141025, API 100830]
Module barge.dll ............. [Build 141018, API 100830]
 
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