Pneumatics Powers Flight-Simulator Game Chair

Aug. 3, 2000
Pneumatics innovations feature control and durability

A pneumatic servovalve and control system have been integrated into a precision three-axis, motion-base simulator. A Pentium III 500-MHz PC, which connects with the joystick and rudder pedals, allows the user to play numerous PC games and flight simulator packages such as Microsoft's popular Flight Simulator 2000. An 18-in. LCD monitor displays the images and a 50-W base speaker underneath the chair base provides realistic sound.

A key component is the servovalve from Cobra Technologies, Irvine, Calif., which features high flow rates and broad bandwidth capability (nearly 200 Hz). Two 0.125-hp pneumatic airbrush compressors power the chair. Operating pressures range from 30 to 40 psi.

An operator-controlled flight yoke or joystick controls ±30° of pitch and roll axis motion. Rudder pedals provide ±15° degrees of motion control for the yaw axis.

A recent software upgrade to the chair's flight simulation capability includes the ability to fly FlightGear open-source software (www.flightgear.org) a realistic Linux-based closed-loop flight simulation package featuring a USB interface. Software "hooks" in the FlightGear software provide real-time pitch, roll, and yaw aircraft flight angles. These digital output signals, through a 12-bit d/a converter, drive the servovalve/actuator assembly. This ensures accurate and responsive motion synchronization and realistic simulation. http://www.menet.umn.edu/~curt/fgfs/Projects/fschair.html

Sponsored Recommendations

The entire spectrum of drive technology

June 5, 2024
Read exciting stories about all aspects of maxon drive technology in our magazine.

MONITORING RELAYS — TYPES AND APPLICATIONS

May 15, 2024
Production equipment is expensive and needs to be protected against input abnormalities such as voltage, current, frequency, and phase to stay online and in operation for the ...

Solenoid Valve Mechanics: Understanding Force Balance Equations

May 13, 2024
When evaluating a solenoid valve for a particular application, it is important to ensure that the valve can both remain in state and transition between its de-energized and fully...

Solenoid Valve Basics: What They Are, What They Do, and How They Work

May 13, 2024
A solenoid valve is an electromechanical device used to control the flow of a liquid or gas. It is comprised of two features: a solenoid and a valve. The solenoid is an electric...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!