The balance attaches to the vertical wall of the wind tunnel working section.
Comprises a mounting plate secured to the wind tunnel working section.
This arrangement provides the necessary three degrees of freedom.
The forces acting on the model are transmitted by cables to three strain gauged load cells.
The output from each load cell is taken via an amplifier to a microprocessor-controlled display module.
A triangular force plate is held on the mounting plate by a mechanism that constrains it to move in a plane parallel to the mounting plate only, while leaving it free to rotate about a horizontal axis.
The display module mounts onto the wind tunnel control and instrumentation frame and includes a digital display to show the lift, drag and pitching moment directly.
