The Ate AEROTECH Wind Tunnel Model Motion System is a compact unit which is designed to be installed within the cockpit area of a race car model. It provides the user with the ability to move the model in roll, pitch and yaw, rotation about the X, Y and Z axes respectively, and it is used in conjunction with the Overhead Support Strut to position the model and vary its attitude during aerodynamic testing. This system is designed for facilities which have an Overhead Balance installed for aerodynamic force measurement.
At the top of the system is the Sting Interface which protrudes through a protective cover. The Model Mounting plate extends along the underside of the system to provide an attachment for the chassis of the model. Three specifically designed precision actuator systems are used to ensure accurate and repeatable positioning of the system. An encoder is fitted to each of the drive systems and is used to monitor and control the position of the system, during motion. Limit switches are incorporated within each of the motion systems to prevent over-travel.
Technical Summary
Model Motion criteria are considered and determined during the design phase in conjunction with the user’s space envelope and load ranges. Typical motion values of a system suitable for a 50% scale model are shown below for guidance only.
| Motion Axis | Motion Range | Rated Speed | |
|---|---|---|---|
| Ax Roll | ±3° in minimum steps of 0.01° | 0.5°/sec | The above figures are typical only as each wind tunnel model motion system is designed and manufactured to customer specific requirements. Different load ranges can usually be accommodated. System size: 400mm long x 180mm wide x 200mm high System weight: 60kg |
| Ay Pitch | ±2° in minimum steps of 0.02° | 0.5°/sec | |
| Az Yaw | ±10° in minimum steps of 0.04° | 0.5°/sec |