Project Multistage2015 - Development Thread

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fred18

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Didn't understand, can you explain?
 
gattispilot

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Well If I add this line then I do get launch:
PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000 8:1.000000

But not a smooth launch.
7 boosters and 2 stages
 
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fred18

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What happens instead of a smooth launch?
 
gattispilot

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Well When I press P it loads up the fuel and then It is in space. Also like too powerful?
Code: 
[MISC]
cog=25.000
GNC_Debug=0
Telemetry=0
Focus=1
Thrust_real_pos=0
Vertical_Angle=0.000

[TEXTURE_LIST]
TEX_1=Exhaust_atsme
TEX_2=SLS_2016\SSME_Exhaust

[PARTICLESTREAM_1]
Name=vent
amin =1e-006
amax =1.000
atmslowdown =4.000
growthrate =1.900
lifetime =1.500
lmax =0.500
lmin =0
srcrate =8.000
srcsize =0.400
v0 =0.500
ltype =EMISSIVE
atmsmap =ATM_PLOG
levelmap =LVL_PSQRT
tex =contrail
Srcspread=0.000
GrowFactor_size=20.000
GrowFactor_rate=8.000

[PARTICLESTREAM_2]
NAME=mach
SRCSIZE=12
SRCRATE=20
V0=50.1
SRCSPREAD=0
LIFETIME=0.04
GROWTHRATE=10
ATMSLOWDOWN=0
LTYPE=EMISSIVE
LEVELMAP=LVL_PSQRT
LMIN=0
LMAX=4
ATMSMAP=ATM_PLOG
AMIN=0.7e-7
AMAX=1
TEX= contrail

[PARTICLESTREAM_3]
Name=EMISSIVE_contrail
Srcsize=12.000
Srcrate=35.000
V0=300.000
Srcspread=0.200
Lifetime=10.000
Growthrate=6.000
Atmslowdown=1.300
Ltype=EMISSIVE
Levelmap=LVL_PSQRT
Lmin=0.8
Lmax=9.000
Atmsmap=ATM_PLOG
Amin=1e-006
Amax=1.000
Tex=SLS_2016/SLS_SRB_contrail
GrowFactor_size=1.400
GrowFactor_rate=4.000

[PARTICLESTREAM_4]
Name=SRB_exhaust
Srcsize=2.500
Srcrate=200.000
V0=100.000
Srcspread=0.000
Lifetime=1.500
Growthrate=11.000
Atmslowdown=0.300
Ltype=EMISSIVE
Levelmap=LVL_PSQRT
Lmin=0
Lmax=1.000
Atmsmap=ATM_PLOG
Amin=1e-006
Amax=1.000
Tex=SLS_2016/SLS_SRB_exhaust
GrowFactor_size=1.100
GrowFactor_rate=2.000

[PARTICLESTREAM_5]
Name=DIFFUSE_contrail
Srcsize=10.000
Srcrate=40.000
V0=300.000
Srcspread=0.200
Lifetime=10.000
Growthrate=6.000
Atmslowdown=1.300
Ltype=DIFFUSE
Levelmap=LVL_PSQRT
Lmin=0.8
Lmax=9.000
Atmsmap=ATM_PLOG
Amin=1e-006
Amax=1.000
Tex=SLS_2016/SLS_SRB_contrail
GrowFactor_size=1.400
GrowFactor_rate=4.000

[PARTICLESTREAM_6]
Name=Launchfx
Srcsize=10.000
Srcrate=30.000
V0=170.000
Srcspread=0.200
Lifetime=8.000
Growthrate=10.000
Atmslowdown=0.300
Ltype=EMISSIVE
Levelmap=LVL_PSQRT
Lmin=0.8
Lmax=1.000
Atmsmap=ATM_PLOG
Amin=1e-006
Amax=1.000
Tex=SLS_2016/SLS_SRB_contrail

[PARTICLESTREAM_8]
Name=Exhdetail
Srcsize=0.700
Srcrate=10.000
V0=50.4
Srcspread=0.000
Lifetime=0.015
Growthrate=0.000
Atmslowdown=0.100
Ltype=EMISSIVE
Levelmap=LVL_FLAT
Lmin=1
Lmax=1.000
Atmsmap=ATM_FLAT
Amin=1
Amax=1.000
Tex=SLS_2016\SSME_Exhaust_Detail

[PARTICLESTREAM_9]
Name=Ice
Srcsize=0.150
Srcrate=0.500
V0=10.000
Srcspread=0.000
Lifetime=5.000
Growthrate=0.000
Atmslowdown=0.000
Ltype=EMISSIVE
Levelmap=LVL_PSQRT
Lmin=0
Lmax=1.000
Atmsmap=ATM_PLOG
Amin=1
Amax=1.000
Tex=SLS_2016/Ice_Part

[PARTICLESTREAM_10]
Name=Ice2
Srcsize=0.050
Srcrate=1.500
V0=10.000
Srcspread=0.000
Lifetime=5.000
Growthrate=0.000
Atmslowdown=0.000
Ltype=EMISSIVE
Levelmap=LVL_PSQRT
Lmin=0
Lmax=1.000
Atmsmap=ATM_PLOG
Amin=1
Amax=1.000
Tex=SLS_2016/Ice_Part

[PARTICLESTREAM_11]
Name=Exhdetail2
Srcsize=1.000
Srcrate=10.000
V0=0.001
Srcspread=0.000
Lifetime=0.050
Growthrate=0.000
Atmslowdown=0.100
Ltype=EMISSIVE
Levelmap=LVL_FLAT
Lmin=1
Lmax=1.000
Atmsmap=ATM_FLAT
Amin=1
Amax=1.000
Tex=SLS_2016\SSME_Exhaust_Detail

[PARTICLESTREAM_12]
Name=SRB_exhaust_2
Srcsize=5.000
Srcrate=200.000
V0=400.000
Srcspread=0.000
Lifetime=0.500
Growthrate=35.000
Atmslowdown=0.300
Ltype=EMISSIVE
Levelmap=LVL_PSQRT
Lmin=0
Lmax=1.000
Atmsmap=ATM_PLOG
Amin=1e-006
Amax=1.000
Tex=SLS_2016/SLS_SRB_exhaust
GrowFactor_size=1.400
GrowFactor_rate=4.000

[PARTICLESTREAM_13]
Name=Engdetail
Srcsize=1.200
Srcrate=20.000
V0=0.100
Srcspread=10.000
Lifetime=0.010
Growthrate=0.000
Atmslowdown=0.000
Ltype=EMISSIVE
Levelmap=LVL_FLAT
Lmin=0.3
Lmax=1.000
Atmsmap=ATM_FLAT
Amin=0.3
Amax=1.000
Tex=SLS_2016/Ice_Part

[PARTICLESTREAM_7]
Name=Engdetail_2
Srcsize=0.800
Srcrate=5.000
V0=60.001
Srcspread=0.000
Lifetime=0.190
Growthrate=0.000
Atmslowdown=0.100
Ltype=EMISSIVE
Levelmap=LVL_FLAT
Lmin=1
Lmax=1.000
Atmsmap=ATM_FLAT
Amin=1
Amax=1.000
Tex=SLS_2016\SSME_Exhaust_Detail

[FX_LAUNCH]
N=2
Height=10.000
Angle=90.000
Distance=0.000
CutoffAltitude=800.000
Pstream1=launchfx
Pstream2=launchfx2     

[FX_VENT]
pstream=vent
off_1=(4.200,-1.000,30.000)
dir_1=(1.000,5.000,0.000)
time_fin_1=-5.000
off_2=(1.000,-4.200,15.000)
dir_2=(5.000,1.000,0.000)
time_fin_2=-5.000

[FX_MACH]
pstream=mach
mach_min=0.900
mach_max=1.300
off_1=(-1.000,0.000,18.000)
off_2=(1.000,0.000,18.000)
off_3=(-5.000,0.000,5.000)
dir=(0.000,0.000,-1.000)
Off_4=(5.000,0.000,5.000)
Off_5=(0.000,0.000,30.000)

[BOOSTER_1]
N=1
MeshName=SLS_2016\Orange-booster_s
Height=53.900
Diameter=3.710
EmptyMass=86363.600
FuelMass=622727.300
Thrust=16363630.640
angle=0.000
off=(6.300,0.000,-0.300)
BurnTime=124.000
eng_1=(0.000,0.000,-28.000)
eng_diameter=0.010
ENG_PSTREAM1=srb_exhaust
Speed=(15.000,-4.000,0.000)
Rot_speed=(-0.200,-0.400,0.000)
Eng_tex=
Eng_pstream1=SRB_exhaust
Eng_pstream2=srb_exhaust_2
BurnDelay=0.000
Expbolts_pos=(6.450,0.000,19.000)
Expbolts_pstream=exbolt
Expbolts_anticipation=1.000

[BOOSTER_2]
N=1
Angle=0.000
Meshname=SLS_2016\Orange-booster_sl
Off=(-6.300,0.000,-0.300)
Height=53.900
Diameter=3.710
Thrust=16363630.640
EmptyMass=86363.600
FuelMass=622727.300
Burntime=124.000
Eng_diameter=0.010
Eng_tex=
Eng_pstream1=srb_exhaust
Eng_pstream2=srb_exhaust_2
Speed=(-15.000,-4.000,0.000)
Rot_speed=(-0.200,0.400,0.000)
Eng_1=(0.000,0.000,-28.000)
BurnDelay=0.000
Expbolts_pos=(-6.450,0.000,19.000)
Expbolts_pstream=exbolt
Expbolts_anticipation=1.000

[BOOSTER_3]
N=2
Angle=0.000
Meshname=SLS_2016\dummy
Off=(6.300,0.000,0.000)
Height=0.001
Diameter=0.001
Thrust=0.001
EmptyMass=0.100
FuelMass=0.100
Burntime=124.000
Eng_diameter=0.010
Eng_tex=
Eng_pstream1=diffuse_contrail
Eng_pstream2=emissive_contrail
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
Eng_1=(0.000,0.000,-90.000)
Eng_2=(0.000,0.000,-90.000)  
BurnDelay=0.000

[BOOSTER_4]
N=3
Angle=90.000
Meshname=SLS_2016\dummy
Off=(2.200,0.000,25.000)
Height=0.001
Diameter=0.001
Thrust=0.001
EmptyMass=0.100
FuelMass=0.100
Burntime=15.000
BurnDelay=0.000
eng_1=(2.000,0.000,2.500)
Eng_diameter=0.000
Eng_tex=
Eng_pstream1=ice
Eng_pstream2=ice2
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
Eng_2=(1.000,3.000,0.000)
Eng_3=(2.000,1.700,5.000)
Eng_4=(2.000,-0.200,-2.500)

[BOOSTER_5]
N=1
Angle=0.000
Meshname=SLS_2016\dummy
Off=(0.000,0.000,0.000)
Height=0.001
Diameter=0.001
Thrust=0.001
EmptyMass=0.100
FuelMass=0.100
Burntime=441.000
BurnDelay=0.000
Eng_diameter=0.000
Eng_tex=
Eng_pstream1=exhdetail
Eng_pstream2=
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
eng_1=(-2.300,2.300,-48.000)
eng_2=(-2.300,-2.300,-48.000)
eng_3=(2.300,-2.300,-48.000)
eng_4=(2.300,2.300,-48.000)

[BOOSTER_6]
N=1
Angle=0.000
Meshname=SLS_2016\dummy
Off=(0.000,0.000,0.000)
Height=0.001
Diameter=0.001
Thrust=0.001
EmptyMass=0.100
FuelMass=0.100
Burntime=441.000
BurnDelay=0.000
Eng_diameter=0.000
Eng_tex=
Eng_pstream1=exhdetail2
Eng_pstream2=
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
eng_1=(-2.300,2.300,-46.208)
eng_2=(-2.300,-2.300,-46.208)
eng_3=(2.300,-2.300,-46.208)
eng_4=(2.300,2.300,-46.208)

[STAGE_1]
Height=63.720
Diameter=8.400
EmptyMass=85275.392 
FuelMass=979452.000 
Thrust=9116000.375
BurnTime=476.000
off=(0.000,0.000,4.700)
MeshName=SLS_2016\corerustET_1a_orion
eng_1=(-2.300,2.300,-32.208)
eng_2=(-2.300,-2.300,-32.208)
eng_3=(2.300,-2.300,-32.208)
eng_4=(2.300,2.300,-32.208)
eng_diameter=2.400
PITCHTHRUST=14193633.100 
YAWTHRUST=14193633.100 
speed=(0.000,0.000,-2.000)
ENG_PSTREAM1=engdetail_2
battery=1.500
Reignitable=1
Eng_tex=SLS_2016\SSME_Exhaust
Eng_pstream2=engdetail
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Rot_speed=(0.000,0.000,0.000)

[STAGE_2]
MeshName=SLS_2016\EUS_ET2
Diameter=8.400
Height=17.700
EmptyMass=19000.000
FuelMass=109000.000
Thrust=440400.000
BurnTime=1350.000
ignite_delay=10.000
off=(0.000,0.000,44.70)
eng_1=(1.350,-1.350,-9.000)
eng_2=(1.350,1.350,-9.000)
eng_3=(-1.350,1.350,-9.000)
eng_4=(-1.350,-1.350,-9.000)
eng_diameter=1.700
PITCHTHRUST=2331995.000
YAWTHRUST=2331995.000
ullage_thrust=100000.000
ullage_N=4
ullage_angle=-22.500
ullage_pos=(4.200,0.000,-8.000)
ullage_dir=(0.200,0.000,-1.000)
ullage_tex=Exhaust_atsme
ullage_length=5.000
ullage_diameter=1.000
ullage_anticipation=3.000
ullage_overlap=1.000
ullage_rectfactor=3.000
reignitable=1
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)

[SEPARATION_12]
Meshname=SLS_2016\interstageET
Off=(0.000,0.000,42.100)
Height=5.000
Diameter=8.400
EmptyMass=5650.320
Separation_delay=15.000
Module=stage
Speed=(0.000,0.000,-2.000)
Rot_speed=(0.000,0.000,0.000)

[FAIRING]
Meshname=SLS_2016\EUS_ORION
Off=(0.000,0.000,52.000)
N=4
Angle=90.000
Height=6.000
Diameter=8.000
EmptyMass=1383.000
Module=stage
Speed=(8.000,0.000,0.000)
Rot_Speed=(0.700,0.000,0.000)

[BOOSTER_7]
Meshname=SLS_2016\SLSORIONMPCVFAIR
Off=(0.000,0.000,62.75)
N=3
Angle=90.000
Height=6.000
Diameter=8.000
EmptyMass=1383.000
Module=stage
Height=0.001
Diameter=0.001
Thrust=0.001
EmptyMass=0.100
FuelMass=0.100
Burntime=441.000
BurnDelay=0.000
Eng_diameter=0.000
Eng_tex=
Eng_pstream1=exhdetail2
Eng_pstream2=
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
eng_1=(-2.300,2.300,-46.208)
eng_2=(-2.300,-2.300,-46.208)
eng_3=(2.300,-2.300,-46.208)
eng_4=(2.300,2.300,-46.208)

[PAYLOAD_1]
MeshName=Orion-MPCV\orion-launch-white
off=(0.000,0.000,64)
Diameter=5.000
Height=8.000
MASS=23820.000
Module=Orion-MPCV\Orion-MPCV
Name=Orion
SPEED=(0.000,0.000,2.000)
RENDER=1
Rotation=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
Live=1

[LES]
Meshname=Orion-MPCV\orion-las-tweaked
Off=(0.000,0.000,64.000)
Height=13.000
Diameter=5.000
EmptyMass=5044.000
Module=stage
Speed=(0.000,2.000,30.000)
Rot_speed=(0.000,0.100,0.000)
 
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fred18

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I just gave a quick look, it seems to me that the boosters are really powerful,

make a sum of all the masses and a sum of all the thrusts at launch, it will give you the acceleration
 
gattispilot

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Thanks
Yes. They seem alot.
https://en.wikipedia.org/wiki/Space_Launch_System
booster should be 16,000 kN

Code: 
[BOOSTER_1]
N=1
MeshName=SLS_2016\Orange-booster_s
Height=53.900
Diameter=3.710
EmptyMass=86363.600
FuelMass=622727.300
Thrust=16363630.640

Core:thrust 7,440 kN

Code: 
[STAGE_1]
Height=63.720
Diameter=8.400
EmptyMass=85275.392 
FuelMass=979452.000 
Thrust=9116000.375
BurnTime=476.000
off=(0.000,0.000,4.700)
MeshName=SLS_2016\corerustET_1a_orion

Booster seems close but the core is high
 
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fred18

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I made a quick calculation and it seems to me that the results are:
Code: 
mass @ launch = 2.648.189,51 kg
Thrust at launch = 41.843.261,66 N
So acceleration (not considering gravity down acceleration) is Thrust/mass = 15.80 m/s2

that seems to me way too much, also because the more fuel it's burning, the more it accelerates leading to uncontrollable power, at least for default ms system
 
Urwumpe

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fred18 said:
I made a quick calculation and it seems to me that the results are:
Code: 
mass @ launch = 2.648.189,51 kg
Thrust at launch = 41.843.261,66 N
So acceleration (not considering gravity down acceleration) is Thrust/mass = 15.80 m/s2
that seems to me way too much, also because the more fuel it's burning, the more it accelerates leading to uncontrollable power, at least for default ms system
Click to expand...

What is wrong with 1.6g acceleration?
 
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fred18

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Urwumpe said:
What is wrong with 1.6g acceleration?
Click to expand...

nothing with the value itself, it seems to me too much considering that it's the acceleration value for the takeoff instant. isn't it usually very close to 1 g so the rocket lifts off gently and becomes greater and greater while fuel is burning?

I don't know if that's the reason of this issue anyway, I really do not have clear what happens in gattisplot sim when he says "then it is in space" :shrug:
 
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Thanks.
Away from Pc . YEs it looks like some specs might be too much.

I think the real core empty is Empty 85,270 gross 979,452
we have :
EmptyMass=85275.392
FuelMass=979452.000

This is what the gross is when it is total- empty = fuel. not sure mass of boosters,...


What happens. You watch the SLS on the pad on the pad. Press P then the fuel gets in and then the thruster fire and the ship disappears from view. If you switch view the ship is spinning in space. I can try to do a video of it.

---------- Post added at 08:38 AM ---------- Previous post was at 08:33 AM ----------

Or would screen shot of the mfd screen be helpful?
 
Last edited:
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fred18

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I just made a test with this:

http://www.orbiter-forum.com/showthread.php?p=553400&postcount=277

it went perfectly, smooth launch, orbit right on target (except that there was not stage 2 mesh, but from MS point of view it was a perfect launch)

I don't understand what you mean when you say "Press P then the fuel gets in " fuel shall be in from beginning of the sim.

Try to open scenario editor, get to the sls - propellant - and make a "fill all" command, then try. Maybe some tanks are empty
 
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OK.
Weird. Back to drawing board.
Thanks

Maybe it was the thrust level I saw increasing in the window in the left upper corner.
 
Last edited:
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fred18

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Try to do this

fred18 said:
Try to open scenario editor, get to the sls - propellant - and make a "fill all" command, then try. Maybe some tanks are empty
Click to expand...
 
Urwumpe

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fred18 said:
isn't it usually very close to 1 g so the rocket lifts off gently and becomes greater and greater while fuel is burning?
Click to expand...

Generally, it is desired to be much higher than 1 g, but only as high as possible including all design trade-offs. The lower the initial acceleration and the increase in acceleration during the first seconds, the longer the rocket stays near the launch pad (risk of colliding with the launch support structures) and the more fuel the rocket consumes compared to faster accelerating rockets.

The Saturn V was a very slow launching rocket with only 1.1g during the lift-off of Apollo 15 and 1.25g during Apollo 8. The Space Shuttle lifted off at 15 m/s², similar the Ariane 5.

A Soyuz rocket lifts off at 1g by definition, but that is a matter of its special launch pad. The rocket hangs over the pad and gets released when it starts moving upward while the engines throttle up from 50% thrust to 100%.
 
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So I get this right after launch:
gQTWEo8.jpg

I am using this guidance.

SLS_Guidance_GNC



Code: 
Multistage 2015 Automatically Generated Guidance File
Vehicle: SLS
0.000 =orbit(250.00,250.00,28.6,-1.00,75.70,0.00)
5.000 =engine(0.00,110.00,5.00,0.00,0.00,0.00)
50.000 =les(100.00,0.00,0.00,0.00,0.00,0.00)
50.000 =engine(100.00,85.00,3.00,0.00,0.00,0.00)
50.000 =fairing(85.00,0.00,0.00,0.00,0.00,0.00)
80.000 =engine(85.00,101.00,3.00,0.00,0.00,0.00)
300.000 =inverse(0.00,0.00,0.00,0.00,0.00,0.00)
It countdown to 0 and then fires then stop and fires again.
Here is the scenario:
Code: 
SLS:Multistage2015
  STATUS Orbiting Sun
  RPOS -67711918591.660 -3103687085.345 -158219437302.776
  RVEL 402519103.4058 -156703275.7312 -1364710786.7500
  AROT 68.025 49.057 -78.111
  VROT 384.8736 -201.5766 -142.1308
  AFCMODE 7
  PRPLEVEL 0:0.948729 1:0.948729 2:0.873259 3:0.576163 4:0.964363 5:0.964363 6:0.964363 7:1.000000 8:0.969456
  THLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 16:1.000000 18:1.000000 20:1.000000 21:1.000000 22:1.000000 23:1.000000 24:1.000000 25:1.000000 26:1.000000 27:1.000000 28:1.000000 29:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_Guidance_GNC.txt
  CONFIGURATION 1
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET 15.716
  GNC_RUN 1
  BATTERY 5384.284161
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
END

Here is the scn after filled all tanks:
Code: 
SLS:Multistage2015
  STATUS Landed Earth
  POS -80.6208970 28.6273640
  HEADING 360.00
  ALT 56.849
  AROT 151.065 -8.240 4.530
  ATTACHED 0:0,MS_LaunchPad_SLS
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000 8:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_Guidance_GNC.txt
  CONFIGURATION 0
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET -10.000
  BATTERY 5400.000000
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END

Met goes from -10 to 5 then engine fire:
Code: 
SLS:Multistage2015
  STATUS Orbiting Earth
  RPOS 751979950.277 -292880066.760 -2551530978.504
  RVEL 2311924576.3332 -900445034.7860 -7844554035.5065
  AROT 1.691 -17.814 -10.847
  VROT -652.3011 91.1807 1280.7097
  ATTACHED 0:0,MS_LaunchPad_SLS
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000 8:0.999943
  THLEVEL 0:0.113127 1:0.113127 2:0.113127 3:0.113127
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_Guidance_GNC.txt
  CONFIGURATION 0
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET 5.534
  GNC_RUN 1
  BATTERY 5400.000000
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END

then this;
Code: 
SLS:Multistage2015
  STATUS Orbiting Earth
  RPOS 34158369830.445 -13304206393.227 -115903185415.757
  RVEL 2311796175.0875 -900442525.6560 -7844308896.4050
  AROT 44.436 8.132 -174.144
  VROT 277.2849 597.4309 1280.7097
  ATTACHED 0:0,MS_LaunchPad_SLS
  AFCMODE 7
  PRPLEVEL 0:0.914266 1:0.914266 2:0.989589 3:0.913934 4:0.975893 5:0.975893 6:0.997073 7:1.000000 8:0.982915
  THLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 16:1.000000 18:1.000000 20:1.000000 21:1.000000 22:1.000000 23:1.000000 24:1.000000 25:1.000000 26:1.000000 27:1.000000 28:1.000000 29:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_Guidance_GNC.txt
  CONFIGURATION 1
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET 10.631
  GNC_RUN 1
  BATTERY 5389.368983
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END


If I go to another guidance:
Code: 
Multistage 2015 Automatically Generated Guidance File
Vehicle: SLS
-10.000 =orbit(200.00,200.00,-29.59,1.00,76.50,0.00)
-5.000 =engine(0.00,110.00,5.00,0.00,0.00,0.00)
50.000 =les(85.00,0.00,0.00,0.00,0.00,0.00)
50.000 =engine(100.00,85.00,3.00,0.00,0.00,0.00)
50.000 =fairing(100.00,0.00,0.00,0.00,0.00,0.00)
80.000 =engine(85.00,101.00,3.00,0.00,0.00,0.00)
Scn after filling all:
Code: 
SLS:Multistage2015
  STATUS Landed Earth
  POS -80.6208970 28.6273640
  HEADING 360.00
  ALT 56.849
  AROT 151.065 -8.240 4.530
  ATTACHED 0:0,MS_LaunchPad_SLS
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000 8:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_EM1_Orion_GNC.txt
  CONFIGURATION 0
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET -10.000
  BATTERY 5400.000000
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END
Then at MET -5 thrust apply and now in space.
Code: 
SLS:Multistage2015
  STATUS Orbiting Earth
  RPOS 936051369.669 -365385323.365 -3188013379.053
  RVEL 1263383642.8930 -493158695.5674 -4302844993.5784
  AROT 134.209 -15.831 64.583
  VROT 2789.0934 2799.4175 533.8641
  ATTACHED 0:0,MS_LaunchPad_SLS
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000 8:0.999801
  THLEVEL 0:0.205198 1:0.205198 2:0.205198 3:0.205198
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_EM1_Orion_GNC.txt
  CONFIGURATION 0
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET -4.047
  GNC_RUN 1
  BATTERY 5400.000000
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END


---------- Post added 02-23-17 at 05:21 AM ---------- Previous post was 02-22-17 at 04:45 PM ----------

I so used the SLS_guidance_new_GNC guidance and didn't fill all. It launched but just spun around

This is scn info:
Code: 
SLS:Multistage2015
  STATUS Orbiting Earth
  RPOS -1763818.835 714684.014 6086791.127
  RVEL 161.1412 1565.9819 87.2049
  AROT -45.653 30.074 -90.643
  VROT 6.5810 263.3325 -1.9822
  AFCMODE 7
  PRPLEVEL 0:0.934850 1:0.935482 2:0.935482 3:0.466650 4:0.981681 5:0.981681 6:0.981681 7:1.000000 8:0.974444
  THLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 6:1.000000 7:1.000000 10:1.000000 11:1.000000 14:1.000000 15:1.000000 16:1.000000 18:1.000000 20:1.000000 21:1.000000 22:1.000000 23:1.000000 24:1.000000 25:1.000000 26:1.000000 27:1.000000 28:1.000000 29:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_Guidance_NEW_GNC.txt
  CONFIGURATION 1
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET 8.079
  GNC_RUN 1
  BATTERY 5391.921339
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 2
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
END

Here I filled all and then launched. in space already:
Code: 
SLS:Multistage2015
  STATUS Orbiting Earth
  RPOS -9659362.447 209674544.673 655718674.087
  RVEL -49008208.9769 598996448.7593 1920381326.5283
  AROT -127.669 21.830 98.337
  VROT -497.0265 809.3233 -196.0131
  ATTACHED 0:0,MS_LaunchPad_SLS
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000 8:0.999871
  THLEVEL 0:0.168277 1:0.168277 2:0.168277 3:0.168277
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBORIONNEW.ini
  GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_Guidance_NEW_GNC.txt
  CONFIGURATION 0
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET -4.199
  GNC_RUN 1
  BATTERY 5400.000000
  GROWING_PARTICLES 
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 1
  TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC.txt
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END

On this I noticed that it fired the engines and then the engines cut out and fired again?
 
F

fred18

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can you save your telemetry and post that file?

since ms2015 gives this option it will be very helpful in this case. Should be in the MFD, monitor screen, press SAV, instructions in the manual at page 33
 
gattispilot

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Yes here it is fully loaded tanks:
Code: 
<--!Multistage 2015 Automatically Generated Telemetry File!-->
MET,Altitude,Speed,Pitch,Thrust,Mass,V-Speed,Acceleration
1.006,1980569486.298,408414499.606,61.285,41843261.665,2636696.508,401099182.929,15.870
2.011,2385022309.190,408414499.649,-60.608,41843261.665,2623998.806,403382573.582,15.946
3.022,2793527253.488,408414499.589,61.199,41843261.665,2611230.210,404752031.748,16.024
4.041,3206396378.938,408414499.920,-59.716,41843261.665,2598360.353,405637075.064,16.104
 
Urwumpe

Urwumpe

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Looks actually good to me - the velocity is likely already very high before the first sample (it is almost constant in your measurements). How did you launch it?

Acceleration is 15 m/s² as well and as planned. Your lift-off went wrong.
 
Last edited:
gattispilot

gattispilot

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What do you mean"how did you launch it"?

I just pressed p.

more info:
Code: 
<--!Multistage 2015 Automatically Generated Telemetry File!-->
MET,Altitude,Speed,Pitch,Thrust,Mass,V-Speed,Acceleration
1.015,55632405538.616,10768353663.134,1.230,41843261.665,2636590.594,10768353663.133,15.870
2.022,66474998210.063,10768353660.932,62.316,41843261.665,2623887.625,10768353660.931,15.947
3.024,77261771689.806,10768353660.927,-62.148,41843261.665,2611251.746,10768353660.927,16.024
4.031,88106006752.019,10768353663.179,11.098,41843261.665,2598548.565,10768353663.179,16.103
5.047,99048586407.546,10768353660.397,39.012,41843261.665,2585730.181,10768353660.397,16.182
6.052,109872339457.617,10768353662.019,-75.751,41843261.665,2573050.993,10768353662.019,16.262
7.056,120684433741.963,10768353662.126,72.054,41843261.665,2560385.462,10768353662.126,16.343
8.068,131577299775.122,10768353660.454,-44.327,41843261.665,2547625.314,10768353660.454,16.424
9.072,142392619921.333,10768353663.169,26.756,41843261.665,2534956.004,10768353663.169,16.507
10.076,153195154460.610,10768353659.989,-16.252,41843261.665,2522301.672,10768353659.989,16.589
11.097,164198576225.401,10768353663.419,2.243,41843261.665,2509412.017,10768353663.418,16.675
12.115,175153330194.850,10768353659.863,2.617,41843261.665,2496579.371,10768353659.863,16.760
13.134,186127800218.843,10768353663.488,-1.696,41843261.665,2483723.630,10768353663.488,16.847
14.155,197120086132.223,10768353659.809,-5.158,41843261.665,2470847.019,10768353659.809,16.935
15.163,207982232828.660,10768353663.383,25.017,41843261.665,2458122.856,10768353663.383,17.022
16.177,218895963853.402,10768353660.420,-49.138,41843261.662,2445338.276,10768353660.420,17.111
17.186,229764282403.768,10768353661.926,81.014,41843261.662,2432606.904,10768353661.926,17.201
18.205,240739857175.369,10768353662.619,-61.737,41843261.662,2419749.889,10768353662.619,17.292
19.213,251588091422.281,10768353659.703,14.243,41843261.662,2407042.043,10768353659.703,17.384
20.224,262476486911.553,10768353663.315,38.523,41843261.662,2394287.152,10768353663.315,17.476
21.228,273286607381.722,10768353662.140,-76.858,41843261.662,2381623.954,10768353662.140,17.569
22.240,284190167366.962,10768353659.566,11.639,41843261.662,2368851.298,10768353659.566,17.664
23.257,295135405780.625,10768353662.810,59.424,41843261.662,2356029.820,10768353662.810,17.760
24.276,306105810335.484,10768353663.365,-42.378,41843261.662,2343178.862,10768353663.365,17.857
25.288,317009694380.224,10768353660.068,-44.681,41843261.662,2330405.827,10768353660.068,17.955
26.299,327897073501.803,10768353659.896,39.546,41843261.662,2317652.126,10768353659.896,18.054
27.316,338851245637.716,10768353662.919,59.709,41843261.662,2304820.183,10768353662.919,18.155
28.323,349692070714.229,10768353664.160,-8.256,41843261.662,2292121.017,10768353664.160,18.255
29.326,360491696086.161,10768353662.669,-67.346,41843261.662,2279470.112,10768353662.669,18.357
30.340,371407857554.455,10768353660.251,-54.850,41843261.662,2266682.696,10768353660.251,18.460
31.359,382379587805.238,10768353659.091,-3.586,41843261.662,2253830.184,10768353659.091,18.565
32.377,393342524268.538,10768353659.669,39.995,41843261.662,2240987.974,10768353659.669,18.672
33.393,404281620288.011,10768353661.055,74.757,41843261.662,2228173.691,10768353661.055,18.779
34.404,415169404483.972,10768353662.331,77.137,41843261.662,2215419.516,10768353662.331,18.887
35.422,426139153555.164,10768353663.355,56.354,41843261.662,2202569.326,10768353663.355,18.997
36.429,436973534272.903,10768353663.787,47.138,41843261.662,2189877.708,10768353663.787,19.108
37.437,447827461650.570,10768353663.943,44.666,41843261.662,2177163.194,10768353663.943,19.219
38.450,458740905440.842,10768353663.885,47.756,41843261.662,2164378.960,10768353663.885,19.333
39.458,469598721528.478,10768353663.375,60.135,41843261.662,2151659.890,10768353663.375,19.447
40.470,480490747953.532,10768353662.386,78.429,41843261.662,2138900.746,10768353662.386,19.563
41.477,491336500202.139,10768353660.734,71.482,41843261.662,2126195.808,10768353660.734,19.680
42.485,502194957043.427,10768353658.942,36.540,41843261.662,2113475.987,10768353658.942,19.798
43.507,513194983552.508,10768353658.124,-2.400,41843261.662,2100590.329,10768353658.124,19.920
44.515,524046377377.251,10768353659.535,-53.350,41843261.662,2087878.782,10768353659.535,20.041
45.532,535007840844.807,10768353663.093,-69.611,41843261.662,2075038.298,10768353663.093,20.165
 
F

fred18

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Do you use the default launchpad or something else?
 
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