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STI Defense enhances military preparedness and mission planning. Our PARASIM® virtual reality platform sets the standard as a parachute simulator for training and assessment, ensuring paratrooper readiness and operational success.
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PARASIM®: Virtual Reality Parachute Simulator
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Prepared for the Jump
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VIRTUAL REALITY PARACHUTE TRAINING Simulator
High Success, Low Risk
For premeditated jumping or emergency egress, PARASIM® is the safe, efficient and cost-effective way for parachute jumpers to hone skills and plan missions before taking to the air.
PARASIM® is a virtual reality parachute simulator that combines 3D immersion with validated parachute dynamics and realistic, instrumented controls to teach parachute maneuvering in the safety of the classroom, imparting skills that will be automatic when it really counts!
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The gold standard for parachute
flight training.
PARASIM® has been the standard parachute simulator for aircrew and airborne paratroopers for more than 35 years, with 400 systems sold worldwide. PARASIM® is used by the U.S. Army, Navy, Air Force and Marines for both premeditated airborne operations and for emergency bailout and ejection training. The PARASIM® system is a patented parachute simulator designed to provide immersive, realistic parachute flight training, trusted by military and aviation professionals worldwide.
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Greater preparedness, reduced risk, and enhanced skills.
Whether you live to jump or jump to live, you’re fully prepared with PARASIM®. This parachute simulator recreates the jump experience by combining virtual reality, validated parachute dynamics based on real-world physics, and realistic canopy controls.
Whether for mission rehearsal or emergency procedures training, PARASIM® covers the full jump experience from aircraft exit, through canopy deployment, canopy malfunctions recognition and correction, canopy control and navigation, to approach and safe landing.
PARASIM® Version 8: Advanced Military Parachute Training Simulator
PARASIM® Version 8 is the latest generation of our virtual reality parachute training simulator, trusted by U.S. and international military forces to prepare airborne personnel. It combines immersive VR, validated parachute dynamics, and instrumented controls, so jumpers can train realistically, repeatedly, and safely in a controlled setting before live jumps.
PARASIM® supports canopy control, malfunction and immediate-action rehearsals, mission rehearsal, aircraft exit training, military freefall and HALO jump training, and landing practice. Powered by VBS4, Version 8 adds whole-earth global terrain, realistic weather, team training, advanced navigation, and enhanced graphics. Read the article to learn more about what's new.
What’s New in Version 8
Global Terrain: Build scenarios for operations anywhere in the world with a whole-earth environment, realistic atmospherics, and Earth’s curvature.
Mission Rehearsal: Real-world terrain data lets jumpers rehearse specific environments and conditions before the mission.
Team Coordination: Link multiple simulators so groups can train together, building the teamwork and coordination complex missions demand.
Pre-Training for Live Jumps: Jumpers build confidence and muscle memory in canopy control before leaving the ground.
Malfunction and Immediate-Action Rehearsals: Trainees can repeat malfunction drills and critical emergency scenarios as many times as it takes.
Aircraft Exit: An in-aircraft visualization and visual transition sequence carries jumpers from aircraft exit to parachute opening, including canopy opening-shock effect.
Enhanced Graphics: VBS4 brings volumetric lighting, dynamic vegetation, and 3D clouds with volumetric shadows.
Navigation Aids: Compass, GPS display, and ATAK integration support navigation training.
Prepare for the jump before leaving the ground. Explore PARASIM® Version 8 for advanced parachute simulation and virtual reality training that supports readiness, proficiency, and operational training.
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VBS4 (Virtual Battlespace 4)
VBS4 (Virtual Battlespace 4) is a next-generation, high-fidelity military simulation software designed for realistic training. It features a scalable whole-earth environment, advanced graphics, intelligent AI, and integrated tools such as VBS Geo, enabling complex, large-scale scenarios for command and control, tactical training, mission rehearsal, and combined arms simulation.
Optimized for modern hardware and VR/MR systems, VBS4 supports immersive, adaptable training environments used by defense organizations worldwide. Recognized as the gold standard in military simulation training, VBS4 is adopted by numerous countries to deliver credible, future-ready training solutions.
Key Features:
Global Terrain: Whole-earth environment with realistic atmospheric conditions and Earth's curvature.
Graphics Engine: Modernized rendering engine for volumetric lighting, better shadows, and higher performance.
Vegetation & Environment: Procedural, dynamic vegetation, detailed snow/ground saturation, and 3D clouds with volumetric shadows.
AI: Configurable, predictable, and repeatable AI system.
Tools: Streamlined scenario creation with VBS Geo to rapidly customize terrains without the need for expert knowledge.
Interoperability: Integrates with VR/MR and other simulation systems via protocols like HLA/DIS.
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Rehearse group operations. Increase mission success.
With a multi-station PARASIM® Network, you can link multiple parachute simulators to plan every detail of a group mission including possible problem scenarios, using real-world terrain data and imagery. Team members can see each other in the shared virtual environment, follow the team leader, practice free fall maneuvering, avoid collisions, and land safely together at the target.
Frequently Asked Questions
Common questions about PARASIM®:
A: PARASIM's canopy library includes over 40 military parachutes covering various requirements from pilots, aircrewman, paratroopers, and special operations forces, with new canopies added continuously. STI works directly with canopy manufacturers to ensure each virtual canopy responds accurately to jumper inputs based on its real-world aerodynamic properties, including malfunctions, control responses and physical properties.
A: Yes. PARASIM supports both premeditated airborne operations and emergency bailout and ejection training. It covers the full jump sequence, aircraft exit, canopy deployment, malfunction recognition and correction, canopy control and navigation, and approach to landing, making it suitable for aircrew emergency procedures as well as standard paratrooper operations training.
A: PARASIM is used by the U.S. Army, Navy, Air Force, Marines, US Forest Service, and BLM Smokejumpers. With over 400 systems sold worldwide across more than 36 years, it is the established standard for parachute simulation in both U.S. and international defense organizations.
A: Yes. With a multi-station PARASIM Network, teams can rehearse group jump operations in a shared virtual environment using real-world terrain data. Trainees can see each other, follow a team leader, practice free-fall maneuvering, avoid mid-air collisions, and execute coordinated landings, all from the use of a single master instruction station before the actual mission.
A: PARASIM uses validated parachute dynamics based on real-world physics, combined with realistic instrumented controls and 3D virtual reality. For each canopy in the library, STI works with the parachute manufacturers to model aerodynamic properties precisely, accurate dynamic responses to physical inputs, unique physical properties, and color pattern modeling.
A: VBS4 (Virtual Battlespace 4) provides a whole-earth environment with realistic atmospheric conditions, advanced AI capability, and interoperability with other simulation systems via HLA/DIS protocols.
Yes. Version 8 uses VBS4’s whole-earth environment and One World Terrain capability, so we can build high-fidelity scenarios for virtually anywhere in the world.
Yes. Jumpers can work through chute-specific malfunctions and immediate-action drills with an instructor, repeating them until the correct response becomes instinctive. These high-risk, high-value repetitions are rarely possible in live training.
Yes. Multiple PARASIM® systems can be linked so groups train as a team, and a single instructor can set up, run, monitor, and review one, some, or all the connected systems from one workstation.
PARASIM® covers the full jump, from aircraft exit and opening shock through canopy control, approach, and landing. Jumpers use a suspension harness with sensor-based controls and a VR display with head and body tracking, flying physics-based canopy dynamics. PARASIM® has been flight proven for over 30 years.
PARASIM® is used by U.S. Special Forces, Army, Navy, Marines, Air Force, and Smokejumpers, and by military organizations in 14 other countries. More than 400 systems are deployed worldwide after over 36 years of continuous development.
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