Vessel Dragon Fly for Titan

gattispilot · Jul 17, 2019

So is anyone working on this:
https://www.nasa.gov/press-release/nasas-dragonfly-will-fly-around-titan-looking-for-origins-signs-of-life
I have been asked. I can make a mesh. But flight dynamics might be difficult. But I guess unlike a helicopter it has no directed thrust. So maybe just use hover and regular controls.

If not I will start on it.

emin2004 · Jul 17, 2019

Concept of what Dragonfly looks like

This is what Dragonfly Probe looks like.

gattispilot · Jul 20, 2019

So I have a mesh now. Titan seems flat.

---------- Post added 07-20-19 at 07:52 AM ---------- Previous post was 07-19-19 at 01:43 PM ----------

So having problems getting this vessel to fly;
I apply a small bit of hover and spin all over the place and goes high.

http://dragonfly.jhuapl.edu/News-and-Resources/docs/34_03-Lorenz.pdf

Here is a zip of the mesh,cfg,scn.
https://drive.google.com/open?id=1wcIOz3I1t2dYygbQ2fn6zQFOXcsr9SR9

emin2004 · Jul 20, 2019

Orbiter 2016 would not load, Says: Terminating After Critical Error

gattispilot · Jul 20, 2019

Can u post the log?

emin2004 · Jul 20, 2019

**** Orbiter.log
000000.000: Build Aug 28 2016 [v.160828]
000000.000: Timer precision: 1e-007 sec
000000.000: Found 0 joystick(s)
000000.000: Devices enumerated: 6
000000.000: Devices accepted: 5
000000.000: [ ] RGB Emulation (SW)
000000.000: [ ] Direct3D HAL (HW)
000000.000: [x] Direct3D T&L HAL (HW)
000000.000: [ ] Direct3D HAL (Intel(R) HD Graphics 620) (HW)
000000.000: [x] Direct3D T&L HAL (Intel(R) HD Graphics 620) (HW)
000000.000: Module AtlantisConfig.dll .... [Build 160828, API 160828]
000000.000: Module AtmConfig.dll ......... [Build 160828, API 160828]
000000.000: Module DGConfigurator.dll .... [Build 160828, API 160828]
000000.000: Module LuaConsole.dll ........ [Build 160828, API 160828]
000000.000: Module Multistage2015_MFD.dll [Build 170626, API 160828]
000000.000: Module ScriptMFD.dll ......... [Build 160828, API 160828]
000000.000: Module transx.dll ............ [Build 160216, API 160214]
000000.000: Module LuaMFD.dll ............ [Build 160828, API 160828]
000000.000: Module CustomMFD.dll ......... [Build 160828, API 160828]
000000.000: Module TrackIR.dll ........... [Build 160828, API 160828]
000000.000: TrackIR module not found.
000000.000: Module Meshdebug.dll ......... [Build 160828, API 160828]
000000.000: Module ExtMFD.dll ............ [Build 160828, API 160828]
000000.000: Module FlightData.dll ........ [Build 160828, API 160828]
000000.000: Module Framerate.dll ......... [Build 160828, API 160828]
000000.000: Module Rcontrol.dll .......... [Build 160828, API 160828]
000000.000: Module ScnEditor.dll ......... [Build 160828, API 160828]
000000.000: Module Damage.dll ............ [Build 130104, API 111029]
000000.000: Module DX9ExtMFD.dll ......... [Build 150812, API 100830]
000000.000: Module OrbiterSound.dll ...... [Build 121120, API 100830]
000000.000: Module CameraMFD.dll ......... [Build 181102, API 160828]
000000.000:
000000.000: **** Creating simulation session
000000.000: DirectDraw interface OK
000000.000: Direct3D interface OK
000000.000: Graphics: Viewport: Window 1530 x 835 x 32
000000.000: Graphics: Hardware T&L capability: Yes
000000.000: Graphics: Z-buffer depth: 32 bit
000000.000: Graphics: Active lights supported: 8
000000.000: Loading 15382 records from star database
000000.000: ---------------------------------------------------------------
000000.000: >>> ERROR: DDraw error DDERR_BLTFASTCANTCLIP
000000.000: >>> [OrbiterGraphics::clbkBlt | .\OGraphics.cpp | 1633]
000000.000: ---------------------------------------------------------------
000000.000: Module Sun.dll ............... [Build 160828, API 160828]
VSOP87(E) Sun: Precision 1e-006, Terms 554/6634
000000.000: Module Mercury.dll ........... [Build 160828, API 160828]
VSOP87(B) Mercury: Precision 1e-005, Terms 167/7123
000000.000: Module Venus.dll ............. [Build 160828, API 160828]
000000.000: Module VenusAtm2006.dll ...... [Build 160828, API 160828]
VSOP87(B) Venus: Precision 1e-005, Terms 79/1710
000000.000: Module Earth.dll ............. [Build 160828, API 160828]
000000.000: Module EarthAtmNRLMSISE00.dll [Build 160828, API 160828]
VSOP87(B) Earth: Precision 1e-008, Terms 2564/2564
000000.000: Module Moon.dll .............. [Build 160828, API 160828]
ELP82: Precision 1e-005, Terms 116/829
000000.000: Module Mars.dll .............. [Build 160828, API 160828]
000000.000: Module MarsAtm2006.dll ....... [Build 160828, API 160828]
VSOP87(B) Mars: Precision 1e-005, Terms 405/6400
000000.000: Module Phobos.dll ............ [Build ******, API 060425]
000000.000: Module Deimos.dll ............ [Build ******, API 060425]
000000.000: Module Galsat.dll ............ [Build 160828, API 160828]
000000.000: Module Jupiter.dll ........... [Build 160828, API 160828]
VSOP87(B) Jupiter: Precision 1e-006, Terms 1624/3625
000000.000: Module Io.dll ................ [Build 160828, API 160828]
000000.000: Module Europa.dll ............ [Build 160828, API 160828]
000000.000: Module Ganymede.dll .......... [Build 160828, API 160828]
000000.000: Module Callisto.dll .......... [Build 160828, API 160828]
000000.000: Module Satsat.dll ............ [Build 160828, API 160828]
000000.000: Module Saturn.dll ............ [Build 160828, API 160828]
VSOP87(B) Saturn: Precision 1e-006, Terms 2904/6365
000000.000: Module Mimas.dll ............. [Build 160828, API 160828]
SATSAT Mimas: Terms 113
000000.000: Module Enceladus.dll ......... [Build 160828, API 160828]
SATSAT Enceladus: Terms 33
000000.000: Module Tethys.dll ............ [Build 160828, API 160828]
SATSAT Tethys: Terms 101
000000.000: Module Dione.dll ............. [Build 160828, API 160828]
SATSAT Dione: Terms 59
000000.000: Module Rhea.dll .............. [Build 160828, API 160828]
SATSAT Rhea: Terms 68
000000.000: Module Titan.dll ............. [Build 160828, API 160828]
SATSAT Titan: Terms 100
000000.000: Module Iapetus.dll ........... [Build 160828, API 160828]
SATSAT Iapetus: Terms 605
000000.000: Module Uranus.dll ............ [Build 160828, API 160828]
VSOP87(B) Uranus: Precision 1e-006, Terms 1827/5269
000000.000: Module Miranda.dll ........... [Build ******, API 060425]
000000.000: Module Ariel.dll ............. [Build ******, API 060425]
000000.000: Module Umbriel.dll ........... [Build ******, API 060425]
000000.000: Module Titania.dll ........... [Build ******, API 060425]
000000.000: Module Oberon.dll ............ [Build ******, API 060425]
000000.000: Module Neptune.dll ........... [Build 160828, API 160828]
VSOP87(B) Neptune: Precision 1e-006, Terms 391/2024
--------------------------- WARNING: --------------------------
>>> Transparency texture mask file too short: Opius_lmask.tex
Disabling specular reflection for this planet
>>> [TileManager::LoadSpecularMasks | .\TileMgr.cpp | 420]
---------------------------------------------------------------
--------------------------- WARNING: --------------------------
>>> Transparency texture mask file too short: Spragg_lmask.tex
Disabling specular reflection for this planet
>>> [TileManager::LoadSpecularMasks | .\TileMgr.cpp | 420]
---------------------------------------------------------------
--------------------------- WARNING: --------------------------
>>> Transparency texture mask file too short: Hoss_lmask.tex
Disabling specular reflection for this planet
>>> [TileManager::LoadSpecularMasks | .\TileMgr.cpp | 420]
---------------------------------------------------------------
000000.000: Finished initialising world
000000.000: Module DeltaGlider.dll ....... [Build 160828, API 160828]
000000.000: Module LuaInline.dll ......... [Build 160828, API 160828]
000000.000: Module ShuttleA.dll .......... [Build 160828, API 160828]
000000.000: >>> ERROR: No vessel class configuration file found for:
============================ ERROR: ===========================
Spacecraft4
[Vessel::OpenConfigFile | .\Vessel.cpp | 243]
===============================================================
000000.000: >>> TERMINATING <<<

Sorry if this is long

gattispilot · Jul 20, 2019

So do you have spacecraft4? If not you may need to change the scn to spacecraft3

emin2004 · Jul 20, 2019

changed it to Spacecraft3, but emits an Error

gattispilot · Jul 20, 2019

Is it the same?
000000.000: >>> ERROR: No vessel class configuration file found for:

The other thing to try is open an good scn and add it. Use the name dragonflytitan and type as spacecraft3

emin2004 · Jul 20, 2019

yes Same Error and i think that it is Missing Something from the Addon itself

gattispilot · Jul 20, 2019

Weird. have you tried adding the vessel into a known good scn?

emin2004 · Jul 20, 2019

Tried it, But Error Still Persist

gattispilot · Jul 20, 2019

This is so weird? So you get the error when you add the vessel?

All you should need is cfg/ini and mesh

emin2004 · Jul 20, 2019

i've already Putted the ini and Mesh into the Orbiter2016 files
although Dragonflytest Addon is Still Missing .CFG from Vessel or other

MarkWatney2015 · Jul 20, 2019

emin2004 said:
changed it to Spacecraft3, but emits an Error

Try renaming to Spacecraft\Spacecraft4 or Spacecraft\Spacecraft3

gattispilot · Jul 21, 2019

then i created the vessel:

So I entered a Deltaglider sc3 and the same result as far as flight dynamics. I will make a dll but need thrust values.

---------- Post added at 12:35 PM ---------- Previous post was at 10:48 AM ----------

So here is a dll version major issues. Apply a little hover and zooms into space
https://drive.google.com/open?id=10x_lpklRRdoD6KEimvxhsbKxGXRtrqr4

Code:

void DFTITAN::clbkSetClassCaps(FILEHANDLE cfg)
{
	

	SetSize(3);
	
	SetEmptyMass(450);
	SetPMI(_V(1.84, 0.85, 1.18));
	SetCrossSections(_V(2.26, 4.05, 1.10));
	// ==============================================================
	SetCW(0.3, 0.3, .3, .3);
	SetRotDrag(_V(0.7, 0.7, 1.2));
	SetPitchMomentScale(0);
	SetYawMomentScale(0);
	SetLiftCoeffFunc(0);
	SetCameraOffset(_V(0, 1, 1.6));
	SetTouchdownPoints(tdvtx_geardown, ntdvtx_geardown);

	SetMeshVisibilityMode(AddMesh(oapiLoadMeshGlobal("DRAGONFLYTITAN")), MESHVIS_ALWAYS); //Main ship mesh
	ph_main = CreatePropellantResource(FUELMASS);

	th_hover[0] = CreateThruster(_V(6, 0, 10), _V(0, 1, 0), .1 / 4, ph_main, JET_ISP);
	th_hover[1] = CreateThruster(_V(-6, 0, 10), _V(0, 1, 0), .1 / 4, ph_main, JET_ISP);
	th_hover[2] = CreateThruster(_V(6, 0, -10), _V(0, 1, 0), .1 / 4, ph_main, JET_ISP);
	th_hover[3] = CreateThruster(_V(-6, 0, -10), _V(0, 1, 0), .1 / 4, ph_main, JET_ISP);

	thg_hover = CreateThrusterGroup(th_hover, 4, THGROUP_HOVER);


	
	


}

Code:

const double FUELMASS = 10;
const double JET_THRUST = .01;
const double JET_ISP = 45.0*G;

---------- Post added 07-21-19 at 08:03 AM ---------- Previous post was 07-20-19 at 12:35 PM ----------

So I still am having issues flying her. I wonder if it would better to move the craft versus using thrust?

So press a key and the craft moves forward release the key the craft stops. I think I can do this but not sure on the altitude change?

Jeremyxxx · Jul 21, 2019

Someone needs to do a Titan terrain.

gattispilot · Jul 22, 2019

So I am trying to raise/lower the mesh for height.
But I am getting weird values for the height.

Code:

int LER2016::clbkConsumeDirectKey(char *kstate) {

//	if (!firstTimestepDone) return 0;

	
	 if (KEYDOWN(kstate, OAPI_KEY_SUBTRACT)) {
		//pEngine->DecreaseTgtSpeed(down);
		 { //FORWARDgear = 0;
		// REVERSEgear = 1;
		// neutralgear = 0;
		// LASTGEAR = 0;
		// LASTGEAR = 2;
			double dv = 0.1;
			targetSpeed = (targetSpeed - dv);
			if (targetSpeed <0) targetSpeed = 0;
			//SetAnimation(anim_SPEEDCONTROL, targetSpeed);
			//decreaseTgtSpeed = down;
			//increaseTgtSpeed = false;
		}
		return 0;
	}
	else if  (KEYDOWN(kstate, OAPI_KEY_ADD)) {
		//FORWARDgear = 1;
		//REVERSEgear = 0;
		//neutralgear = 0;
		//LASTGEAR = 0;
		double dv = 0.1;
		//LASTGEAR = 1;
		targetSpeed = (targetSpeed + dv);
		if (targetSpeed > MAXSPEED) targetSpeed = MAXSPEED;
		return 0;
	}
	
	else if (KEYDOWN(kstate, OAPI_KEY_NUMPAD4)) {
		TURN_proc = 90;
				FORWARDgear = 0;
				REVERSEgear = 0;
		//		neutralgear = 1;
		sidegear = 1;
		return 0;
	}
	else if (KEYDOWN(kstate, OAPI_KEY_NUMPAD8)) {
		
				FORWARDgear = 1;
				REVERSEgear = 0;
				neutralgear = 0;
				sidegear = 0;
		return 0;
	}
	else if (KEYDOWN(kstate, OAPI_KEY_NUMPAD2)) {

		FORWARDgear = 0;
		REVERSEgear = 1;
		neutralgear = 0;
		sidegear = 0;
		return 0;
	}
	else if (KEYDOWN(kstate, OAPI_KEY_NUMPAD7)) {

		FORWARDgear = 0;
		REVERSEgear = 0;
		neutralgear = 0;
		sidegear = 0;
		MOVEUP = 1;
		double dh = 0.1;
		height = (height + dh);
		return 0;
	}
	else if (KEYDOWN(kstate, OAPI_KEY_NUMPAD9)) {

		FORWARDgear = 0;
		REVERSEgear = 0;
		neutralgear = 0;
		sidegear = 0;
		MOVEUP = 0;
		MOVEdown = 1;
		double dh = 0.1;
		height = (height - dh);
		
		return 0;
	}
	FORWARDgear = 0;
	REVERSEgear = 0;
	MOVEUP = 0;
	MOVEdown = 0;
	sidegear = 0;
	
	
	
	return 0;
}

initialize:

Code:

height = 0;

Code:

if (MOVEUP==1)
		 {
			 ShiftMesh(0, _V(0, height, 0));
		 }
		if (MOVEdown == 1)
		{
			ShiftMesh(0, _V(0, height, 0));
		}

mesh moves up but not down?

fixed the height value. But not sure how to move the mesh smoothly up/down.

Jeremyxxx · Jul 23, 2019

I'm sure that the Dragonfly would have to be carried by a cruising spacecraft that would fly by Saturn.

MarkWatney2015 · Jul 24, 2019

Jeremyxxx said:
I'm sure that the Dragonfly would have to be carried by a cruising spacecraft that would fly by Saturn.

Yes it would be! However, JPL hasn't released its planned trajectory to Saturn yet (2026-2034)

...even its launch vehicle, but we can safely assume it will be launched from either of these rockets:

1. Space Launch System (Block 1B or 2)
2. Super Heavy-Starship (BFR)
3. Angara A5
4. Ariane 64
5. Vulcan
6. New Glenn
7. Yenisei

Delta IV and Atlas V might retire by 2025, and if Starship is operational, Falcon Heavy is out of the question too

Orbiter 2024 has been released!

Vessel Dragon Fly for Titan

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