Model Positining System

About Model Positining System

Overview

A precision model positioning system designed for accurate and repeatable control of pitch and yaw angles in wind tunnel testing. Engineered to integrate seamlessly with sting-mounted force/moment balances, the system ensures stable model alignment and consistent test conditions across subsonic, transonic, and supersonic applications.

 Key Features

• Accurate Attitude Control: Precise pitch and yaw adjustment
• Stable Model Centering: Maintains position within test section during movement
• Robust Construction: Heavy-duty design for vibration-free operation
• Low Backlash Mechanisms: Smooth, repeatable positioning
• Compatible with Sting Balance Systems

System Types

Subsonic Positioning System

• Pitch Control: Parallelogram arm mechanism
• Yaw Control: Optional via precision gearbox
• Motion Range: Wide-angle adjustment with stable centering

Transonic / Supersonic Positioning System

• Pitch Control: Cogged quadrant mechanism
• Yaw Control: Not available
• Compact, Rigid Design for high-speed flow environments

Technical Datasheet (Typical)

Subsonic Systems

• Pitch Range: 30 (typical)
• Yaw Range: 30 (optional)
• Actuation: Precision gearbox (manual or motorized)
• Base Plate: ~19 mm ( in) thick steel
• Levelling: Adjustable threaded foot pads

Transonic / Supersonic Systems

• Pitch Range: +10 / 5 (typical)
• Yaw Range: Not available
• Mechanism: Steel quadrant with precision gearing
• Materials: Anodized aluminium with steel components
• Bearings: High-precision, low backlash

Performance

• Positioning Accuracy: High repeatability with minimal hysteresis
• Stability: Maintains model alignment throughout angle changes
• Compatibility: Suitable for a wide range of wind tunnel sizes

Optional Features

• Data Acquisition, Display & Control (DAC) system integration
• Stepper motor drives for pitch and yaw (subsonic systems)
• Roll adjustment capability (subsonic only)
• Custom configurations for existing wind tunnels

Applications

• Aerodynamic coefficient testing
• Angle-of-attack and yaw studies
• Stability and control analysis
• Subsonic, transonic, and supersonic research

Customization

Each system can be custom-designed to match your wind tunnel geometry, test model size, and performance requirements, ensuring optimal integration and functionality.