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TransitionBriefs
CSIM Modeling and Simulation Tool
Advanced Technology Laboratories • Electronic Systems Business Area
F-35 Joint Strike Fighter
Vol. 2 No. 5

Developed and refined by the
Advanced Technology Laboratories
(ATL) for over a decade,
CSIM simulates and visualizes
large, complex systems consisting
of thousands of hardware components
and tens of thousands of
software tasks. CSIM provides a
performance-modeling capability
that enables a design team to verify
that all system components are
likely to work together.
CSIM is a rapid modeling and simulation
technology that allows designers to
describe systems as a collection of components—such
as computer processors, peripherals,
sensors, and software—operating
each piece of hardware. When a network is
defined, the virtual system's performance
can be checked quickly and accurately.
CSIM lets engineers design, test, and
redesign software and systems until the
desired performance is achieved before the
first equipment is ordered. Items of hardware,
software and operating conditions
can be added, removed, or changed and the
effects of the changes can be visualized.
CSIM uses standard C (or C++) computer
programming language to describe
and model interacting blocks of hardware
and/or software. CSIM includes tools and
libraries of predefined virtual hardware
and software products, and designers can
combine the “off-the-shelf” library items
with descriptions of new components to
simulate and test the operation of entirely
new systems.
Lockheed Martin Maritime Systems
and Sensors (MS2) Eagan used CSIM to
help develop the Joint Strike Fighter (JSF)
Integrated Core Processor (ICP). Because
many of the electronic hardware/software
systems are fully integrated through the
ICP, MS2 used CSIM to ensure that these
diverse systems would work together
smoothly and seamlessly.
As the ICP system integrator, MS2
assembled complete models of the JSF
avionics using CSIM and then sent copies
to teammates. Suppliers used this virtual
system to test their individual products. The
entire avionics system was tested and
improvements were identified without having
to flight test. CSIM is also helping
develop software capabilities to be integrated
into JSF hardware in 2009.
Other Transition Successes
• Bones—MS2 Moorestown used CSIM
to develop models and tool features to
replace the obsolete Bones tool and
achieve better system and software
design.
• System Design with UML Interface—
MS2 Moorestown’s Aegis Open
Architecture team used CSIM to model
performance.
• Systems Integration Laboratory—
Lockheed Martin Aeronautics used
CSIM to model its systems integration
laboratory.
TransitionBriefs
CSIM Modeling and Simulation
• Human Factors—MS2 Moorestown
used CSIM to model human factors
workflow, replacing the obsolete
MicroSaint tool.
• Network Planning—MS2 Moorestown,
Aeronautics, and Information
Systems & Global Services used CSIM
as a flexible modeling and simulation
tool for system and software design and
network planning.
• CSIM Supported Successful Programs
from the Defense Advanced
Research Projects Agency, U.S. Army,
and U.S. Air Force. It also supported
the Warfighter's Information Network-
Tactical (WIN-T).
Contact:
Hugh Pearce
Advanced Technology Laboratories
856.792.9810
hpearce@atl.lmco.com