[OHM] ETS-Themis Launch Vehicle 1.0

[Loru]

Quote:

Originally Posted by Enjo

 Back to the authors - it would be great if the launcher had more bank power. Right now it can't be really stabilised.

Thanks for feedback. Surelly it will be taken seriously in coding process.

Cheers
Loru

[Enjo]

OK. I've coded pitch programme into the LaunchMFD. See the attached version.

The launcher config file (Config\MFD\LaunchMFD\ETS-System\ETS-Launcher_Cargo.cfg)
now looks the following way:

SPACE_XY = 2 6 0
SPACE_BANK = 100 50 0
ATMO_XY = 4 12 0
ATMO_BANK = 1 2 0
ATMO_CONTINUOUS_CONTROL_SWITCH_ANGLE = 45.0
ATMO_BANK_TARGET_WINGS_LEVEL_SWITCH_ANGLE = 20.0

PITCH_PROGRAM
0 90
10 80
20 75
40 45
60 30
END_PITCH_PROGRAM

Start the sim, bring up LaunchMFD, select target, press Shift+P, start engines and sit back.

Saved some of your coding time, maybe?

[Interceptor]

Quote:

Originally Posted by Enjo

 OK. I've coded pitch programme into the LaunchMFD. See the attached version.

The launcher config file (Config\MFD\LaunchMFD\ETS-System\ETS-Launcher_Cargo.cfg)
now looks the following way:

SPACE_XY = 2 6 0
SPACE_BANK = 100 50 0
ATMO_XY = 4 12 0
ATMO_BANK = 1 2 0
ATMO_CONTINUOUS_CONTROL_SWITCH_ANGLE = 45.0
ATMO_BANK_TARGET_WINGS_LEVEL_SWITCH_ANGLE = 20.0
 
PITCH_PROGRAM
0 90
10 80
20 75
40 45
60 30
END_PITCH_PROGRAM

Start the sim, bring up LaunchMFD, select target, press Shift+P, start engines and sit back.

Saved some of your coding time, maybe?

I can't get the PID autopilot to work I followed your instructions,and I am using the new launchmfd 1.47,and the themis just goes straight up,and it won't let me jettison the boosters.

[romanasul]

Is there any way to configure the rocket to launch without the SRB's? It's just too overpowered for simple satellite launches.

[Loru]

At this point it isn't however we're working on something smaller - fully configurable ~ 8-30 ton to LEO Themis-A

[I00I]

Good to know thanks..

[MaverickSawyer]

First thoughts from the field test facilities...

-Bank authority is slightly lacking. As noted above, you guys are working on it.
-Engaging KILLROT autopilot with the SRBs attached has a tendency to cause mild shaking during launch. Nice touch of realism.
-Flight under manual control is extremely easy, provided that you are on the roll heading you want before ignition. KSP is a wonderful teacher in regards to manual ascents, and the Themis doesn't sway like a Kerbal rocket!

[MaverickSawyer]

OK, further testing after adding the Payload Manager addon from kulch. (I guess I hadn't added it like I thought! )
-For light payloads, igniting the SRMs and shutting down the core stage engines seems to be a viable option. Just don't expect to steer during this phase!
-The KILLROT autopilot shake is in fact due to the long movement arm of the booster and rocket engines.
-When launching the Navigator probe atop a Themis-Sirius from CSSC, I was able to get a velocity of 15km/s at Sirius ECO. Not bad! Now I just need to work on the timing for the departure burn in order to get to my target...
-The Themis-Sirius seems to have enough ooomph to pack along a third stage for higher energy missions. I'll toy around with Kulch's DM-2 tug and the Velcro Delta II upper stage, as I have a lot of experience and success with both of these. I'll make sure to share the results, as well.
-How are we supposed to launch a ETS Prometheus Evac shuttle on this? I can't fit it into a fairing... Is there some specific interstage for the Prometheus?

[Loru]

From the provided PDF file:

Quote:

CONFIGURATION:
Rocket is configurable via config files located in: „Config\Vessels\ETS-system”
directory.
Here is sample config file:

; === Configuration file for vessel class ETS Launcher ===
ClassName = ETS-Launcher
Module = ETS-System\ETS_LCORE
EditorModule=ETS-System\ETS_LCORE
;This line decides what 2nd stage we're using, the options are:
;0 = No 2nd stage at all
;1 = The lower power and smaller upper stage
;2 = The high power and larger upper stage
UpperStage Config = 2
;This line decides what fairing diameter we're using
;0 = No fairing at all
;1 = 5x5
;2 = 5x8
;3 = 6x7
;4 = 6x12
Fairing = 3
;This line decides if we have the interstage or not, this also controls the
ETS / MTS LES
;0 = No Interstage / LES
;1 = ETS LES
;2 = MTS LES
;3 = Standard Interstage
Interstage = 3

I think file is self explanatory. As for now ETS and MTS stages are for shuttles
and and can be used when ETS Prometheus and ETS vertigo will come out (but
you can use Prometheus Evac shuttle with this Rocket).
Note: When spawning Prometheus shuttle please first close gear (as it's over
ground). That's Shuttle's limitation

You can create as many configs as you like and all will appear in scenario
editor.

I think that will explain all

[MaverickSawyer]

Ah. So THAT'S what that's for! Thanks, Loru.

[MaverickSawyer]

OK, finally made the .cfg that employed the Prometheus LES adaptor (ETS LES), and successfully made it to orbit. It does require a lot of fuel from the Prometheus, though. Is there any way to employ either the Rigel or Sirius stage to help with the push to orbit?

[Loru]

Quote:

Originally Posted by MaverickSawyer

  Is there any way to employ either the Rigel or Sirius stage to help with the push to orbit?

Why would you need it - I just managed to put Prometheus to 226km x 6 235 km equatorial orbit launched from CSSC.

LV setup:

no second stage, ETS LES, Prometheus Shuttle fully fueled.

[MaverickSawyer]

Quote:

Originally Posted by Loru

 Why would you need it - I just managed to put Prometheus to 226km x 6 235 km equatorial orbit launched from CSSC.

LV setup:

no second stage, ETS LES, Prometheus Shuttle fully fueled.

{image}

Maybe I wasn't flying the Themis right, then.
Side note: could you make it so that the LES could be used to help with the burn to orbit, as a sort of final kick stage? After all, why pack it all the way up to 7.1 km/s and then throw it away?

[Loru]

Quote:

Originally Posted by MaverickSawyer

 Maybe I wasn't flying the Themis right, then.
Side note: could you make it so that the LES could be used to help with the burn to orbit, as a sort of final kick stage? After all, why pack it all the way up to 7.1 km/s and then throw it away?

Just press CTRL-A after core stage MECO.

[MaverickSawyer]

I did. No response. I'll try again soon. Maybe I just didn't do it fast enough...