Question ms2015 guidance

[gattispilot]

IS there a way to tell the 2nd stage to fire when jettisoned?

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 =fairing(75,0.00,0.00,0.00,0.00,0.00)

The first stage gets it to a 200 km orbit. But when we jettison the 2nd stage only the Ullage motors fire. Even though there is no thrust

 

[boogabooga]

IIRC, it should fire automatically.

You could try to give a second "engine" call though.

 

[gattispilot]

Thanks.

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 =fairing(75,0.00,0.00,0.00,0.00,0.00)
100.000 =engine(100.00,85.00,3.00,0.00,0.00,0.00)

No change. Not sure if it because it has reach the orbit200?

[STAGE_2]
MeshName=SLS_2016\EUS_ORANGE1
Diameter=8.400
Height=17.700
EmptyMass=19000.000
FuelMass=109000.000
Thrust=440400.000
BurnTime=1350.000
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)
ignite_delay=0.1000

 

[cale1970]

I had similar issues with the Jarvis rockets using Multistage2025. One work-around that does the trick is to insert a Jettison command in the guidance file. For example,if the first stage burns out at 200s, insert “202=Jettison()”

 

[gattispilot]

So now em1 flight:

Multistage 2015 Automatically Generated Guidance File
Vehicle: SLS
-10.000 =orbit(40.7,1806.00,-28.63,1.00,76.50,0.00)
-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)

This is what it will be:
SLS/ICPS
 The SLS core stage inserts ICPS/Orion into an 22 x 975 nmi (40.7 x 1806 km) MECO
state; ICPS performs a Perigee Raise Maneuver (PRM) at the first apogee to raise the
orbit to 100 x 975 nmi (185 x 1806 km)

So turned off complex and it would blow up the ship.
But still not getting it there