RisingFury
OBSP developer
That means zero lift, but some drag. If L/D was infinite - finite lift and zero drag, then you're have a problem
OHM SpaceX launch vehicles and Dragon
- Thread starter OrbitHangar
- Start date
That means zero lift, but some drag. If L/D was infinite - finite lift and zero drag, then you're have a problem
sorindafabico
New member
Dragon seems to fly over a planet without atmosphere, but it's Earth!
Is anyone else having this problem?
Is anyone else having this problem?
Fabri91
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What was your PE? I assume you wanted to perform a lunar re-entry. If it's above 85/90km you likely won't notice a huge effect, but the fact that the drag curve is absolutely flat seems a bit strange. L/D should be and is 0.
sorindafabico
New member
PeA was 48km. The ship enters Earth's atmosphere, but ignores it (no drag, no lift).
Here's the scenario file, saved just before reentry:
I will test the manned version.
---------- Post added at 05:39 AM ---------- Previous post was at 04:29 AM ----------
Manned version is OK. It's Dragon cargo's problem.
Here's the scenario file, saved just before reentry:
Code:
BEGIN_DESC
Orbiter saved state at T = 551852
END_DESC
BEGIN_ENVIRONMENT
System Sol
Date MJD 56892.2384858968
END_ENVIRONMENT
BEGIN_FOCUS
Ship Dragon
END_FOCUS
BEGIN_CAMERA
TARGET Dragon
MODE Cockpit
FOV 50.00
END_CAMERA
BEGIN_HUD
TYPE Orbit
REF AUTO
END_HUD
BEGIN_MFD Left
TYPE User
MODE AeroBrakeMFD
Reference Earth
Data 0 1.000000 1 0 0 0
Target none
LonLat 0.000000 0.000000 0
AoA 0 0.000000
Bank 0 0.000000
END_MFD
BEGIN_MFD Right
TYPE Surface
SPDMODE 4
END_MFD
BEGIN_SHIPS
LPad:SpaceX/LPad
STATUS Landed Earth
POS -80.5771995 28.5619578
HEADING 90.00
AFCMODE 7
PRPLEVEL 0:1.000000
NAVFREQ 0 0
TYPE 2
SUBTYPE 0
ANIM0 2 1.0000
ANIM1 2 1.0000
STIME 20.000000
END
Dragon:SpaceX\DragonC
CFG 1 23756730.5815
STATUS Orbiting Earth
RPOS -4475465.74 -172398.17 -5246862.86
RVEL 9552.330 1700.878 -4513.611
AROT -16.42 55.63 -13.95
AFCMODE 7
PRPLEVEL 0:0.513372
NAVFREQ 0 0
CONFIG 3 1 1
ANIM0 0 0.0000
UCGO @@0,1,0,0,@@1,1,0,0,@@2,1,0,0,@@3,1,0,0,@@4,1,0,0,@@5,1,0,0,@@6,1,0,0,@@7,1,0,0,
TRUNK 0
END
ISS:ProjectAlpha_ISS
STATUS Orbiting Earth
RPOS 3677157.85 3715285.00 -4242615.76
RVEL 4931.134 -5850.711 -853.634
AROT 118.08 22.46 -177.73
VROT 0.08 0.02 -0.02
AFCMODE 7
PRPLEVEL 0:1.000000
IDS 0:588 100 1:586 100 2:584 100 3:582 100 4:580 100
NAVFREQ 0 0
XPDR 466
END
Booster 0:SpaceX\FStage
STATUS Landed Earth
POS -79.0173527 28.4964412
HEADING 268.20
AFCMODE 7
PRPLEVEL 0:0.001241
NAVFREQ 0 0
FSTATE 6
TYPE 1
SUBTYPE 2
END
Booster 1:SpaceX\FStage
STATUS Landed Earth
POS -79.0164679 28.5221225
HEADING 182.34
AFCMODE 7
PRPLEVEL 0:0.001241
NAVFREQ 0 0
FSTATE 6
TYPE 1
SUBTYPE 3
END
FH first stage 1:SpaceX\FStage
STATUS Landed Earth
POS -56.8280917 25.8712243
HEADING 328.03
AFCMODE 7
PRPLEVEL 0:0.000989
NAVFREQ 0 0
FSTATE 6
TYPE 1
SUBTYPE 1
END
F9 fairing 2:SpaceX\Junk
STATUS Landed Earth
POS -79.0163519 28.5221741
HEADING 168.64
AFCMODE 7
NAVFREQ 0 0
TYPE 10
END
F9 cover 1:SpaceX\Junk
STATUS Landed Earth
POS -79.0175447 28.4964300
HEADING 314.00
AFCMODE 7
NAVFREQ 0 0
TYPE 11
END
F9 cover 2:SpaceX\Junk
STATUS Landed Earth
POS -79.0166951 28.5221177
HEADING 280.66
AFCMODE 7
NAVFREQ 0 0
TYPE 11
END
Trunk cover 0:SpaceX\Trash
STATUS Orbiting Sun
RPOS -388658261724.68 -293573393389.39 976928529511.59
RVEL -1096535.150 -628430.222 2279042.042
AROT -70.16 43.99 -66.23
VROT -0.07 -0.00 0.00
AFCMODE 7
NAVFREQ 0 0
TYPE 3
END
Trunk cover 1:SpaceX\Trash
STATUS Orbiting Sun
RPOS -57708664149477.60 -7888930266868.66 -166691649560392.31
RVEL -123943760.688 -16907266.538 -357059554.776
AROT 123.64 28.62 133.33
VROT -3304.83 0.09 2413.71
AFCMODE 7
NAVFREQ 0 0
TYPE 4
END
F9 cover 3:SpaceX\Junk
STATUS Landed Earth
POS -56.8416373 25.8741586
HEADING 60.46
AFCMODE 7
NAVFREQ 0 0
TYPE 11
END
FH debris0:SpaceX\Debris
STATUS Orbiting Sun
RPOS 130816804593.94 -74366145.32 -75445127332.25
RVEL 14517.081 -162.895 26035.817
AROT 33.99 30.01 -71.27
AFCMODE 7
PRPLEVEL 0:1.000000
NAVFREQ 0 0
END
Trunk:SpaceX\Trash
STATUS Orbiting Earth
RPOS -4475421.77 -172717.46 -5246889.92
RVEL 9552.340 1700.802 -4513.618
AROT 86.13 8.10 -179.08
AFCMODE 7
NAVFREQ 0 0
TYPE 0
ASTATE 0.47
CARGO 0.90
END
END_SHIPS
BEGIN_ReFuelMFD
SCENARIO_TREE
NAMED Computers
END_NODE
END_NODE
END
BEGIN_ExtMFD
END
BEGIN_uap
ENDI will test the manned version.
---------- Post added at 05:39 AM ---------- Previous post was at 04:29 AM ----------
Manned version is OK. It's Dragon cargo's problem.
MaverickSawyer
Acolyte of the Probe
Confirmed the glitch with the Dragon C. I just took it out to more than 3 megameters, then came back with a periapsis of around 50 km and a velocity of over 10 km/sec. Damn thing didn't even light up the heat shield or show any g-force on the Load MFD. The trunk, however, made for some nice fireworks...
Last edited:
MaverickSawyer
Acolyte of the Probe
Select the Falcon, and press Shift+P.
Press Shift+E to fire the Launch Abort System.
Press Shift+E to fire the Launch Abort System.
MaverickSawyer
Acolyte of the Probe
There is no way that I could find that is functional to separate the Falcon from the Dragon. It works the other way.
MaverickSawyer
Acolyte of the Probe
Last edited:
IronRain
The One and Only (AFAIK)
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At least you still have battery power..
Last edited:
anemazoso
Addon Developer
Glider,
I love this add-on! Thank you for your hard work and attention to detail, you have given these rockets a great treatment. I have already spent way to much time flying around in the dragon and launching other payloads.
Several things I would hope could be added/fixed (aside from the whole grasshopper RLV and reusable F9):
-Loading Dragon on the FX, FXH and FXX will put the Dragon in the second stage with no ability to move it up to an appropriate level. Adding the ability to change Dragon with the U and D keys would be great!
-Attaching multiple payloads.
-Constant Hud status of all vitals (cabin temp, hull temp, O2 and batt, etc) with the ability to turn on/off with a key.
I really appreciate your hard work on this add on so far and would be just as happy if it stayed the same but I hope with extreme intensity that you will continue with this project.
I love this add-on! Thank you for your hard work and attention to detail, you have given these rockets a great treatment. I have already spent way to much time flying around in the dragon and launching other payloads.
Several things I would hope could be added/fixed (aside from the whole grasshopper RLV and reusable F9):
-Loading Dragon on the FX, FXH and FXX will put the Dragon in the second stage with no ability to move it up to an appropriate level. Adding the ability to change Dragon with the U and D keys would be great!
-Attaching multiple payloads.
-Constant Hud status of all vitals (cabin temp, hull temp, O2 and batt, etc) with the ability to turn on/off with a key.
I really appreciate your hard work on this add on so far and would be just as happy if it stayed the same but I hope with extreme intensity that you will continue with this project.
Last edited:
Recent SpaceX news says they are looking into the possibility of flying the first and second stages back to earth (and soft landing) under their own power. Can this be simulated with this add-on, and if so, has anyone tried it?
Regards
Regards
Hlynkacg
Aspiring rocket scientist
I tried it but seeing as the F9 is currently modeled without landing gear I found the actual touch-down to be problematic.
---------- Post added at 01:55 AM ---------- Previous post was at 01:29 AM ----------
On a more serious note I just want o echo others on this thread and thank glider for the excellent addon.
While the Dragon is nice in its own right I'd have to say that the real stars are the launch vehicles. This module has pretty much replaced all others as my "go-to" addon for notional launching missions.
Kaito
Orbiquiz Coordinator
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Truly amazing addon. I have decided I will use the Falcon Heavy to launch any vehicle under 53 tonnes into LEO (Yes, I have to detach the fairing and payload on the ground, and the XR2 looks kinda dumb, but hey, getting into orbit with no fuel expended on the XR2 is nice 
)
However, I have encountered multiple bugs:
1) According to Burn Time MFD, the dV on the Dragon+trunk is about 2.1km/s. I imagine this is not right
2) The 2nd stage engine on the Falcon Heavy tends to blow up A LOT..much more than the specified 0.15%. I've flown maybe 20 missions, and 4 of them have had a 2nd stage engine explosion
3) This may be a problem with Orbiter, but when adjusting the date via Scenario Editor, the solar panel meshes tend to move. This is fixed with an orbiter reboot
4) Im not sure if this is a bug, or just me failing to understand how it works (I've read both manuals), but pressing 's' does not remove the crew elevator, visually.
***EDIT***
5) Attach payload, quit orbiter, then reload the scenario, and the payload is spinning wildly in space
6) Upon separation of payloads, they tend to incur some extra thrust. To clarify, i'll release a payload, and it will not separate "straight" away from me; it will translate "left" or "right"
If these could be solved, this addon would be absolutely amazing. Now, to list several features I like about this addon, just to be nice:
1) The heating on the 2nd stage engine is beautiful
2) The Mesh is very visually appealing
3) The ability to add my own payload is amazing
4) Actual working solar panels with a power requirement...amazing
Thank you so much for this addon
~Kaito
)However, I have encountered multiple bugs:
1) According to Burn Time MFD, the dV on the Dragon+trunk is about 2.1km/s. I imagine this is not right
2) The 2nd stage engine on the Falcon Heavy tends to blow up A LOT..much more than the specified 0.15%. I've flown maybe 20 missions, and 4 of them have had a 2nd stage engine explosion
3) This may be a problem with Orbiter, but when adjusting the date via Scenario Editor, the solar panel meshes tend to move. This is fixed with an orbiter reboot
4) Im not sure if this is a bug, or just me failing to understand how it works (I've read both manuals), but pressing 's' does not remove the crew elevator, visually.
***EDIT***
5) Attach payload, quit orbiter, then reload the scenario, and the payload is spinning wildly in space
6) Upon separation of payloads, they tend to incur some extra thrust. To clarify, i'll release a payload, and it will not separate "straight" away from me; it will translate "left" or "right"
If these could be solved, this addon would be absolutely amazing. Now, to list several features I like about this addon, just to be nice:
1) The heating on the 2nd stage engine is beautiful
2) The Mesh is very visually appealing
3) The ability to add my own payload is amazing
4) Actual working solar panels with a power requirement...amazing
Thank you so much for this addon
~Kaito
Last edited:
cymrych
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Yep, I got that one a bunch myself. If you change the payload in-game and exit the sim, compare that current scenario with one of the stock Falcon scenarios, and you'll see that the payload's status is listed as "Orbiting Earth" in the stock scenario, whereas your current scenario will have the payload as "Landed Earth." Pretty sure this is what's causing the conflict and bouncing our payloads straight up through the stratosphere. I've found it easiest to just pull up an original Falcon scenario in notepad and swap payloads there.
Glider: Any chance we can get an option to attach a 2nd stage interstage, for those of us launching 3rd stages such as an EDS or Wishbone's NTR? Those 3rd stages look a little exposed, without some form of interstage surrounding their nozzles!
BusDriver
New member
Sorry for bumping this up again, but I think I just found another bug (or user error?)
Whenever I launch a scenario with UMMUs, as soon as I get to orbit: Close, reload the scenario, and all UMMUs show as dead when trying to do an EVA.
Whenever I launch a scenario with UMMUs, as soon as I get to orbit: Close, reload the scenario, and all UMMUs show as dead when trying to do an EVA.
MaverickSawyer
Acolyte of the Probe
With the OHM forum, you can't bump: they're always available to comment on. Elsewhere, however, you can definitely necropost. You'll get a message from the mods as a warning.
On topic, though, you're right. I had that happen, but thought nothing of it, as I had used Jump Drive MFD. I thought that killed the crew, but apparently not!
On topic, though, you're right. I had that happen, but thought nothing of it, as I had used Jump Drive MFD. I thought that killed the crew, but apparently not!
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