Просмотр исходного текста страницы Simplest possible simulation on stock KSP

The full Simulation mod pack is relatively resource demanding (RSS with medium textures requires 12+ GB RAM).
But you can try Simulation experience using Stock KSP with minimal number of mods.

= You'll need =
== Software ==
*Kerbal Space Program 1.6.0+ [https://store.steampowered.com/app/220200/Kerbal_Space_Program/]
*KSPTOT 1.6.0+ [https://github.com/Arrowstar/ksptot/releases]
*Putty [https://www.putty.org/]
*Zello - mobile push-to-talk рация (или настоящая рация).

== Mods ==
*kOS [https://github.com/KSP-KOS/KOS/releases]
*KSPTOTConnect [https://github.com/Arrowstar/ksptot/releases]

== kOS scripts ==
*kos/warput from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive]
*kos/res from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive]

== Initial save for KSP ==
saves/initial_save.sfs from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive]

== Mission Architect scenarios ==
ma/duna-depature.mat from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive]
ma/duna-correction-burn.mat from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive]


= Installation =
== Install KSP ==
Buy KSP on Steam, GOG or developer site and install on your PC.
Remember KSP installation folder path (will be referenced next as $KSP_PATH).

== Install KSP inital save ==
# Launch KSP
## In main menu select "Start new"
## Click "New game"
## Select game type "Sandbox" and enter name "Simulation"
## Click "Start!"
# Copy file initial_save.sfs from saves folder from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive] to $KSP_PATH/saves/Simulation folder

== Install KSPTOT ==
*Download latest release archive compatible with your KSP version. Unzip to any folder.
*This archive also contains KSPTOTConnect plgin (you'll need it on next step).
*Copy scenarios duna-depature.mat and ma/duna-correction-burn.mat from ma folder from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive] to KSPTOT folder.

== Install mods ==
:Download archive with kOS release compatible with your KSP version. Unzip into $KSP_PATH folder.
:Copy GameData folder from KSPTOT folder to $KSP_PATH folder.

== Install kOS scripts ==
Copy files warpup and res from kos folder  from [https://github.com/1greywind/simplest-possible-simulation/archive/v0.2.zip archive] to $KSP_PATH/Ships/Script folder.

== Setup voice commlink ==
Install Zello app to your smartphone or use real ptp radio.

= Run Simulation =
# Load initial save in KSP:
## Run KSP.
## Click "Start game".
## Click "Resume saved.
## Select "Simulation" and click "Load".
## Press Alt+F9 and select initial_save from the list.
# Launch kOS server [[Файл:Start kos server.gif|none|thumb|Launch kOS server]]
# Run Putty (putty.exe)
# Connect to kOS server [[Файл:Connect to kos server.gif|none|thumb|Connect to kOS server]]
# Launch KSPTOT (KSPTrajectoryOptimizationTool.exe)
# Connect KSPTOT to KSPTOTConnect [[Файл:Connect to ksptot.gif|none|thumb|Connect KSPTOT to KSP]]
# Launch Mission Architect in KSPTOT
# Make sure that you have voice commlink up and running (through Zello or radio).

= How it works =
[[Файл:Only scheme en.png|right|512px]]
Data exchange channels are shown on the schema:
* Mission control uses putty terminal to run kOS commands on the simulation computer:
** _warput_ command is used to start time warp to the given date mark. Command accepts single argument: the target date mark in the timestamp foramt (number of seconds passed from the epoch). Date timestamps are calculated in KSPTOT.
** _res_ command prints out ship resouses into terminal.
* Mission control uses KSPTOT to:
** Calculate maneuvers data and control their excution by Crew with the help of Mission Architec
** Get engine startup time with the help of Maneuver Execution Assistant.
** Convert date from calendar format to timestamp for the warput command (any date field in KSPTOT).
** Upload maneuver data to KSP.
** Get telemetry from KSP with MCC Real Time System.
* Communication between Mission Control and Crew is run through single voice channel over Zello or PTT radio.

= Lets start =
We have:
*Space flight simulation (in KSP) up and running on the simulation computer.
*kOS server is up and runing in KSP.
*We have putty terminal connected to kOS server and we can use it to control simulation.
*KSPTOT connected to KSP through KSPTOTConnect and Mission architect opened and ready to use.
*Voice commchannel ready to use..

We need to assign roles next. We need minimum two participants:
*One (Mission Control) will play as Flight Director, CAPCOM, EECOM and FDO.
*Another (Crew) will combine roles of Spacecraft Commander and Pilot.

Our flight plan:
* We start from low Kerbin orbit at the beginning of Duna transfer window period.
* Our tasks:
** Plan Duna depature burn.
** Execute it.
** Verify orbit params after burn execution.
** Compute correction burn if needed.

How to execute flight plan:
* Mission Control calls Crew and informs them that maneuver calculation process begins.
* To calculate maneuver data you need:
** Load duna-depature.mat scenario into Misson Archtect
** Import initial orbit params from KSP.
** Run optimization (Ctrl+O)
* After optmization Mission Control calls Crew and informs them that maneuver data is ready.
* Crew confirms that they are ready to receive maneuver data.
* Mission Control uploads maneuver to KSP and informs Crew that maneuver has been uploaded.
* Crew confirms that they see maneuver and copy maneuver dV to Misison Control.
* Misison Control now needs to calculate engine startup time (relative to maneuver date).
** First current orbit params are imported into Maneuver Execution Assistant (MEA) tool.
** Next import maneuver data to MEA.
** Get ship mass by runnig command "run res." in the kOS terminal.
** Enter ship mass, engine Isp and Thrust (Isp=350s, Thrust=250kN) into corresponding fields in MEA.
** Click "Compute Burn Timing Information"
* Mission Control calls Crew and tells them Burn Start Time.
* Crew copy burn start time.
* Mission Control requests how many time for preparation for maneuver execution do Crew need.
* Crew estimates time required to turn ship into direction of the maneuver in minutes (i.e. 1 minute) and passes it to Mission Control.
* Mission Control calculates date timestamp to warp time using formulae: T = Maneuver time - engine startup time - preparation time. Let's say maneuver time is 40210 seconds, engine startup time is 100 seconds and Crew requested 1 minute to prepare. This gives warp timestamp = 40210 - 100 - 60 = 40050.
* Mission control calls Crew and requests are they ready for time warp.
* Crew says ok.
* Mission control enter command "run warput(40050)." into kOS terminal - time warp starts in KSP.
* Mission control asks Crew do they observe time acceleration.
* Crew confirms.
* When time warp ends, Crew informs Mission control.
* Crew begins maneuver execution:
** Turn ship into direction of maneuver (using SAS mode or manually).
** Start engine in time.
** Mission control monitors maneuver execution through MCC Real Time System.
** Crew waits until maneuver dV indicator reaches zero and turns off engine.
* Crew notifies Mission Control that maneuver was executed.
* Mission Control verivies maneuver execution:
** Load duna-correction-burn.mat secnario into Mission Architect
** Import current orbit data into Initial State event
** Chck orbital params inside Final Spacecarft State box: if Orbiting about = Duna and in the mouse over popup Periapsis Alt. = 100-200 км, then maneuver execution was succesful. If no, we need to calculate correction burn:
** Run optimization.
** If optimization result gives orbit that satisfies constraints (Periapsis Alt. = 100 km, Inclanation = 0-10 degree), maneuver data is uploaded to KSP and executes in the same way as was descibed before. If not, when:
** You need to increase optimization variables range or shift maneuver date.
* The flight plan is considered completed if, after correction, the ship is on a course leading to Duna with pericenter ~100 км and low inclanation.