WELCOME TO THE PSIMU WIKI : Différence entre versions

De Wiki
Aller à : navigation, rechercher
(→‎PREVIOUS VERSIONS)
(→‎WHAT IS PSIMU?)
Ligne 55 : Ligne 55 :
  
 
Just go [https://logiciels.cnes.fr/en/content/psimu there] ...
 
Just go [https://logiciels.cnes.fr/en/content/psimu there] ...
−
 
−
== WHAT IS PSIMU? ==
 
−
 
−
<font color=#556B2F>'''PSIMU'''</font> is a [https://cnes.fr/fr '''CNES'''] tool allowing to propagate trajectories around the Earth. These trajectories may be:
 
−
* <font color=#FF0000>'''Elliptical'''</font> ones (all kind of orbits, from <font color=#FF8C00 title="Low Earth Orbit">LEO</font> to <font color=#FF8C00 title="Geostationary Earth Orbit">GEO</font> passing through <font color=#FF8C00 title="Medium Earth Orbit">MEO</font> or <font color=#FF8C00 title="High Elliptical Earth Orbit">HEO</font>),
 
−
* <font color=#FF0000>'''Hyperbolic'''</font> ones,
 
−
* <font color=#FF0000>'''Atmospheric'''</font> ones (in particular in case of debris reentries).
 
−
 
−
<font color=#556B2F>'''PSIMU'''</font> is usable via three modes:
 
−
* <font color=#FF8C00 title="Graphical User Interface">GUI</font>: its utilization is made user-friendly thanks to a graphical user interface (developed using [[http://genius.cnes.fr GENIUS]] and [[http://genopus.cnes.fr GENOPUS]]),
 
−
* Batch using a context file (in <font color=#FF8C00 title="Extensible Markup Language">XML</font> format),
 
−
* Library via its <font color=#FF8C00>Java</font> interface.
 
−
 
−
Its initialization is made by:
 
−
* The initial orbital parameters definition (epoch, frame, coordinates) with a great number of available options.
 
−
* The vehicle modelling:
 
−
:- Vehicle shapes (sphere, cylinder and parallelepiped) with or without solar panels,
 
−
:- Dimensions or surfaces,
 
−
:- Aerodynamic characteristics and/or radiative pressure ones,
 
−
:- Propulsive characteristics (engines, tanks).
 
−
* A maneuver sequence (optional) including impulsive maneuvers and/or continuous ones
 
−
* A sequence of attitude laws (optional) ; indeed, if PSIMU does not manage 6 DDL motion, it owns as input data, attitude laws depending on orbital events, allowing to know at every moment the vehicle attitude and thus, to deduce from it the forces applied to the vehicle.
 
−
* Numerical integrator parametrization (<font color=#FF8C00>Runge Kutta</font> or <font color=#FF8C00>Dormand Price</font>) with, for usual applications, by default settings.
 
−
* Choice of force models within:
 
−
:- Potential with several models available as the possibility to manage degree and order of zonal and tesseral terms,
 
−
:- Other bodies attraction : Moon and Sun via analytical or numerical ephemeris,
 
−
:- Atmospheric forces using different atmospheric models and their associated settings,
 
−
:- Solar radiative pressure (direct or rediffused one)
 
−
:- Oceanic and terrestrial tides
 
−
 
−
<font color=#556B2F>'''PSIMU'''</font> also allows to set its output data within several tens of variables, the output frame and, of course, the output step. A graphical interface for plots is also integrated.
 
  
 
== HOW TO USE IT? ==
 
== HOW TO USE IT? ==

Version du 21 janvier 2020 à 15:12

Welcome to the PSIMU wiki, a CNES flight dynamics tool. As it is coded in Java, this product is available for any kind of platforms owning a JVM.

DESCRIPTION

What is PSIMU?

PSIMU is a CNES tool allowing to propagate trajectories around the Earth.
It allows also to compute the information on other parameters as S/M or maneuvers previously occured.
At last, OPERA is able to generate automatic PDF reports with a synthesis of maneuver activity of a given object.

Current version

The current version is: V11.4.

Previous versions

Describes evolutions thanks to previous versions.

USE IT

Where to get it?

Where to download it.

Quick start

First steps with PSIMU

User Manual

PSIMU may be used very quickly via its GUI facilitating context elaboration and results exploitation. No code knowledge is necessary.
Anyway, it is also possible to use it in batch mode (especially on grid computers with no display properties) or using its Java interface.

DOCUMENTATION

Java Doc

Access to current and old Java doc.

Dependencies

Describes dependencies with other products.

News

List the main evolutions of this Wiki.




WHERE TO GET IT ?

Just go there ...

HOW TO USE IT?

PSIMU may be used very quickly via its GUI facilitating context elaboration and results exploitation. No code knowledge is necessary. It is also possible to use it in batch mode via a shell and especially on grid computers with no display properties. On the other hand, it is also possible to use it via its Java interface inside a higher level tool (for example, an orbit determination tool or a maneuver optimization tool).

So, three jar files are available:

  • psimu-NN.n-jar-with-dependencies.jar : executable jar including all needed libraries => it is the file to use for GUI utilization but it may also be used for the Java interface
  • psimu-NN.n.jar : includes only PSIMU classes => to be used for Java interface, under the condition of linking with the right version of [GENOPUS] and [PATRIUS]
  • psimu-NN.n-javadoc.jar

REMARKS

  • Java version available externally to CNES (previous versions to V11.x were coded in Fortran 95 and V11.0 were only for internal CNES purposes).
  • As it is coded in Java, this product is available for any kind of platforms owning Java. An executable jar (launching the GUI) including all dependencies is provided.
  • PSIMU is provided as a Freeware under a CNES specific license via this site.
  • Some tutorials are available.
Récupérée de « http://psimu.cnes.fr/index.php?title=WELCOME_TO_THE_PSIMU_WIKI&oldid=857 »