Request Any SLS and Orion MPCV in development?

Sorry, Only one main thruster. I think it is somehow how the touchdown points are set, though
 
gattispilot said:
I think it is somehow how the touchdown points are set, though
Click to expand...

That's wrong. You can of course test if the order of the touchdown points is correct by just creating the vessel on the surface of the planet and look where the nose is pointing.
 
Yes. I did that. But doesn't that also tell you where forward is?

On the Spec Not sure how much RCS is and fuel amount?
 
gattispilot said:
Yes. I did that. But doesn't that also tell you where forward is?

On the Spec Not sure how much RCS is and fuel amount?
Click to expand...

If the mesh is correctly oriented... ;)

Also, you can of course use the F9 option to display the coordinate system of the vessel in Orbiter.
 
Ok. Sussess. It does go up but then rotates to the ground.

Questions on the isp. and thrust

"
Empty Weight
...................
Approximately 188,000 lbs
(85,275 kg)
Material
............................
Aluminum 2219
Number of Engines
...........
4 RS-25
Thrust per Engine:
............
512,000 lbs
(232,242 kg)"

I have
Code: 
double MAX_MAIN_THRUST = 232242 * 4;

	SetEmptyMass(85270);
	SetCW(0.3, 0.3, 0.6, 0.9);
	SetWingAspect(0.1);
	SetWingEffectiveness(0.1);
	SetCrossSections(_V(636.52,633.36,68.53 ));
	SetRotDrag(_V(0.1, 0.1, 0.1));
	if (GetFlightModel() >= 1) {
		SetPitchMomentScale(1e-4);
		SetBankMomentScale(1e-4);
	}
	SetPMI(_V(356.25, 355.96,9.0));
"First Stage (Block I, IB, II) - Core Stage
Diameter 8.4 m (330 in)
Empty mass 85,270 kg (187,990 lb)
Gross mass 979,452 kg (2,159,322 lb)
Engines 4 RS-25D/E[3]
Thrust 7,440 kN (1,670,000 lbf)
Specific impulse 363 seconds (3.56 km/s) (sea level), 452 seconds (4.43 km/s) (vacuum)
Fuel LH2/LOX"

Would the fuel be the mass weight-empty weight?
what should isp be?
 
gattispilot said:
Specific impulse 363 seconds (3.56 km/s) (sea level), 452 seconds (4.43 km/s) (vacuum)


what should isp be?
Click to expand...

ISP = [math]I_{sp}[/math] = specific impulse, Orbiter is in SI units, so you need to use the km/s figure and convert to m/s, what Orbiter expects.

And propellant mass is in first order estimate, gross mass - empty mass (in reality, you also have consumables that are not propellant, but rarely more than a few dozen kg)
 
ok.
Code: 
const double ISP = 3560;

double MAX_MAIN_FUEL = 10000;
double MAX_RCS_THRUST = 110.25;
double MAX_MAIN_THRUST = 232242 * 4;

I have played with the fuel it I overload it not enough thrust. If I under do the fuel it runs out.

Haven't got the boosters to fire either
 
The CS max propellant load is 1082880 kg with a dry mass of 114660 kg. The RS-24 each puts out a max thrust 573870 N at 111% Rated Power Level (RPL). Minimum Rated Power Level is 65%.
 
Thanks

I did this:
Code: 
double MAX_MAIN_FUEL = 114660;
double MAX_RCS_THRUST = 110.25;
double MAX_MAIN_THRUST = 573870 * 4;

When I engage the thrust she lifts off and then rotates into the ground
 
You should really implement Thrust Vector Control rather than rely on fake RCS thrusters. Only upper stages use RCS as they're expected provide coast attitude control post-engine cut-off.
 
DaveS said:
You should really implement Thrust Vector Control rather than rely on fake RCS thrusters. Only upper stages use RCS as they're expected provide coast attitude control post-engine cut-off.
Click to expand...

How?
 
Oh. I redid the thrusters but still ratherr than go straight up in goes up and rotates down to the earth
Code: 
	th_main[0]= CreateThruster(_V(-2, -3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	th_main[1] = CreateThruster(_V(-2, 3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	th_main[2] = CreateThruster(_V(2, -3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	th_main[3] = CreateThruster(_V(2, 3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	thg_main = CreateThrusterGroup(th_main, 4, THGROUP_MAIN);

OK now straight flight but only 1 booster firing.
https://dl.dropboxusercontent.com/u/71242599/slsbooster.jpg

There are velco 2 seperates cfg.

---------- Post added at 08:57 PM ---------- Previous post was at 06:32 PM ----------

With the Velco boosters it does fine. Can't get both to fire at the same time though
https://dl.dropboxusercontent.com/u/71242599/slsbooster1.jpg

But without the boosters
https://dl.dropboxusercontent.com/u/71242599/slsissue.jpg

The axes
https://dl.dropboxusercontent.com/u/71242599/slstouchdown1.jpg

cpp
Code: 
// ==============================================================
//                 ORBITER MODULE: SLS
//                  Part of the ORBITER SDK
//          Copyright (C) 2002-2004 Martin Schweiger
//                   All rights reserved
//
// SLS.cpp
// Control module for SLS vessel class
//

// ==============================================================
#define ORBITER_MODULE
#include "orbitersdk.h"
#include "SLS.h"
#include "OrbiterSoundSDK40.h"

VISHANDLE MainExternalMeshVisual = 0;
// 1. vertical lift component (wings and body)



void SLS::clbkPostCreation(void)
{
	SLSID = InitializeOrbiterSound();

}
int SLS::InitializeOrbiterSound()
{
	int ID = ConnectToOrbiterSoundDLL(GetHandle());

	// Set default directory (easier and faster and clearer: win win !)
	SetMyDefaultWaveDirectory("Sound\\_CustomVesselsSounds\\SLS");

	SoundOptionOnOff(ID, PLAYMAINTHRUST, TRUE);
	SoundOptionOnOff(ID, PLAYHOVERTHRUST, TRUE);

	
	SoundOptionOnOff(ID, PLAYATTITUDETHRUST, TRUE);

	SoundOptionOnOff(ID, PLAYCOUNTDOWNWHENTAKEOFF, FALSE);

	SoundOptionOnOff(ID, PLAYCABINAIRCONDITIONING, FALSE); 

	SoundOptionOnOff(ID, PLAYCABINRANDOMAMBIANCE, TRUE);

	SoundOptionOnOff(ID, PLAYRADIOATC, FALSE);

	SoundOptionOnOff(ID, DISPLAYTIMER, FALSE);

	return ID;
}


// Constructor
SLS::SLS(OBJHANDLE hObj, int fmodel)
: VESSEL2(hObj, fmodel)
{

		DefineAnimations();

}
void SLS::clbkSetClassCaps(FILEHANDLE cfg)

{
	int i;
	// physical specs
	SetSize(45);
	SetEmptyMass(85270);
	SetCW(0.3, 0.3, 0.6, 0.9);
	SetWingAspect(0.1);
	SetWingEffectiveness(0.1);
	SetCrossSections(_V(636.52,633.36,68.53 ));
	SetRotDrag(_V(0.1, 0.1, 0.1));
	if (GetFlightModel() >= 1) {
		SetPitchMomentScale(1e-4);
		SetBankMomentScale(1e-4);
	}
	SetPMI(_V(356.25, 355.96,9.0));
	SetTrimScale(0.05);
	SetCameraOffset(_V(0, 41, 0));

	SetTouchdownPoints(_V(0,5, -50.5), _V(4.4, -5, -50.5), _V(-4.4,-5, -50.5));;
	EnableTransponder(true);

	B1 = CreateAttachment(false, _V(-4.2, 0, -10), _V(0, 1, 0), _V(0, 0, 1), "B1", false);
	B2 = CreateAttachment(false, _V(4.2, 0, -10), _V(0, 1, 0), _V(0, 0, 1), "B2", false);
	F1 = CreateAttachment(false, _V(-4.2, 0,22.3), _V(0, 1, 0), _V(0, 0, 1), "F1", false);
	F2 = CreateAttachment(false, _V(4.2, 0, 22.3), _V(0, 1, 0), _V(0, 0, 1), "F2", false);
	CARGO = CreateAttachment(false, _V(0, 0, 22.), _V(0, 1, 0), _V(0, 0, 1), "CARGO", false);




	SetMeshVisibilityMode(AddMesh(oapiLoadMeshGlobal("SLSBLOCK1A")), MESHVIS_ALWAYS); //Main ship mesh

	ph_main = CreatePropellantResource(MAX_MAIN_FUEL);    


	th_main[0]= CreateThruster(_V(-2, -3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	th_main[1] = CreateThruster(_V(-2, 3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	th_main[2] = CreateThruster(_V(2, -3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	th_main[3] = CreateThruster(_V(2, 3.5, -37), _V(0, 0, 1), MAX_MAIN_THRUST, ph_main, ISP);
	thg_main = CreateThrusterGroup(th_main, 4, THGROUP_MAIN);


	AddExhaust(th_main[0], 15, .5, _V(-1.998015, -3.527, -39.596416), _V(0, 0, -1)); 
	AddExhaust(th_main[1], 15, .5, _V(-1.998015, 3.527, -39.596416), _V(0, 0, -1)); 
	AddExhaust(th_main[2], 15, .5, _V(1.998015, -3.527, -39.596416), _V(0, 0, -1)); 
	AddExhaust(th_main[3], 15, .5, _V(1.998015, 3.527, -39.596416), _V(0, 0, -1)); 

	SURFHANDLE tex_main = oapiRegisterExhaustTexture("Exhaust_atsme");
	for (i = 0; i < 4; i++) AddExhaust(th_main[i], 30.0, 2.0, tex_main);

	
	

	

	THRUSTER_HANDLE th_att_rot[4], th_att_lin[4];
	th_att_rot[0] = th_att_lin[0] = CreateThruster(_V(0, 0, 8), _V(0, 1, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[1] = th_att_lin[3] = CreateThruster(_V(0, 0, -8), _V(0, -1, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[2] = th_att_lin[2] = CreateThruster(_V(0, 0, 8), _V(0, -1, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[3] = th_att_lin[1] = CreateThruster(_V(0, 0, -8), _V(0, 1, 0), MAX_RCS_THRUST, ph_main, ISP);
	CreateThrusterGroup(th_att_rot, 2, THGROUP_ATT_PITCHUP);
	CreateThrusterGroup(th_att_rot + 2, 2, THGROUP_ATT_PITCHDOWN);
	CreateThrusterGroup(th_att_lin, 2, THGROUP_ATT_UP);
	CreateThrusterGroup(th_att_lin + 2, 2, THGROUP_ATT_DOWN);
	

	th_att_rot[0] = th_att_lin[0] = CreateThruster(_V(0, 0, 6), _V(-1, 0, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[1] = th_att_lin[3] = CreateThruster(_V(0, 0, -6), _V(1, 0, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[2] = th_att_lin[2] = CreateThruster(_V(0, 0, 6), _V(1, 0, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[3] = th_att_lin[1] = CreateThruster(_V(0, 0, -6), _V(-1, 0, 0), MAX_RCS_THRUST, ph_main, ISP);
	CreateThrusterGroup(th_att_rot, 2, THGROUP_ATT_YAWLEFT);
	CreateThrusterGroup(th_att_rot + 2, 2, THGROUP_ATT_YAWRIGHT);
	CreateThrusterGroup(th_att_lin, 2, THGROUP_ATT_LEFT);
	CreateThrusterGroup(th_att_lin + 2, 2, THGROUP_ATT_RIGHT);
	

	th_att_rot[0] = CreateThruster(_V(6, 0, 0), _V(0, 1, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[1] = CreateThruster(_V(-6, 0, 0), _V(0, -1, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[2] = CreateThruster(_V(-6, 0, 0), _V(0, 1, 0), MAX_RCS_THRUST, ph_main, ISP);
	th_att_rot[3] = CreateThruster(_V(6, 0, 0), _V(0, -1, 0), MAX_RCS_THRUST, ph_main, ISP);
	CreateThrusterGroup(th_att_rot, 2, THGROUP_ATT_BANKLEFT);
	CreateThrusterGroup(th_att_rot + 2, 2, THGROUP_ATT_BANKRIGHT);
	

	th_att_lin[0] = CreateThruster(_V(0, 0, -7), _V(0, 0, 1), 2 * MAX_RCS_THRUST, ph_main, ISP);
	th_att_lin[1] = CreateThruster(_V(0, 0, 7), _V(0, 0, -1), 2 * MAX_RCS_THRUST, ph_main, ISP);
	CreateThrusterGroup(th_att_lin, 1, THGROUP_ATT_FORWARD);
	CreateThrusterGroup(th_att_lin + 1, 1, THGROUP_ATT_BACK);
	
}



void SLS::clbkPostStep(double simt, double simdt, double mjd)
{
		

}



DLLCLBK VESSEL *ovcInit(OBJHANDLE hvessel, int flightmodel)
{
	return new SLS(hvessel, flightmodel);
}

DLLCLBK void ovcExit(VESSEL *vessel)
{
	if (vessel) delete (SLS*)vessel;
}

void SLS::DefineAnimations(void)

{



}


// --------------------------------------------------------------
// Keyboard interface handler (buffered key events)
// --------------------------------------------------------------
int SLS::clbkConsumeBufferedKey(DWORD key, bool down, char *kstate)
{
	// only process keydown events
	if (!down)
		return 0;
	if (key == OAPI_KEY_G)
	{

		DetachChild(F1,- 4);// deattach stage
		DetachChild(F2, 4);// deattach stage
	}
	if (key == OAPI_KEY_J)
	{

		DetachChild(CARGO, 1);// deattach stage
	}

	return 0;
	
}

// ====================================================================
// clbkVisualCreated used to display UMMU initialisation message 
// because oapiDebugString() doesn't work in clbkSetClassCap
// ====================================================================
void SLS::clbkVisualCreated(VISHANDLE vis, int refcount)
{
	MainExternalMeshVisual = GetMesh(vis, 0);

}
// ==============================================================
// Visual destroyed
// ==============================================================
void SLS::clbkVisualDestroyed(VISHANDLE vis, int refcount)
{
	MainExternalMeshVisual = 0;
}


void SLS::clbkSaveState(FILEHANDLE scn)
{
//	char cbuf[256];

	// ORBITER, default vessel parameters
	SaveDefaultState(scn);



}
void SLS::clbkLoadStateEx(FILEHANDLE scn, void *status)
{
	char *line;
	while (oapiReadScenario_nextline(scn, line))
	{


	


		ParseScenarioLineEx(line, status);
	}
	
	
	

}
h:
Code: 
// ==============================================================
// Some vessel parameters
// ==============================================================
const double ISP = 3560;

double MAX_MAIN_FUEL = 114660;
double MAX_RCS_THRUST = 110.25;
double MAX_MAIN_THRUST = 573870;
// Interface for derived vessel class: 
// ==========================================================

class SLS : public VESSEL2 {
public:
	SLS(OBJHANDLE hObj, int fmodel);
	void clbkPostCreation(void);
	void clbkSetClassCaps(FILEHANDLE cfg);
	int clbkConsumeBufferedKey(DWORD key, bool down, char *kstate);
	void clbkVisualCreated(VISHANDLE vis, int refcount);
	void DefineAnimations(void);
	void clbkVisualDestroyed(VISHANDLE vis, int refcount);
	void clbkPostStep(double simtt, double simdt, double mjd);
	void clbkLoadStateEx(FILEHANDLE scn, void *status);
	void clbkSaveState(FILEHANDLE scn);
	int InitializeOrbiterSound();

	THRUSTER_HANDLE th_main[4], thg_main;

	PROPELLANT_HANDLE   ph_main;

	ATTACHMENTHANDLE B1, B2,F1,F2,CARGO;
	int  SLSID;
	

};
 
Last edited:
DaveS said:
I believe Ares 1X uses it: Ares I-X Ultra 1.00
Click to expand...

Only one engine though, but at least a starting hint... sadly the SDHLV add-on sources are no longer online, maybe I have them somewhere. they had been included in the add-on, the only thing that was lost is the online doxygen documentation.

[ame="http://orbithangar.com/searchid.php?ID=1399"]Sirius SDHLV 0.2-dev[/ame]
 
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