Pyramidal Balance

Pyramidal Balance .

Pyramidal Balance

Description of Pyramidal Balance

During the early years of wind tunnel testing, Forces and Moments were literally measured through pan-type balances. Although technology has advanced dramatically since those early days, the term balance is still applied to the devices used for Force and Moment measurements today.

Pyramidal Balance can be divided into two main groups: internal and external. The group names are derived from their location relative to the test model and wind tunnel test section – internal balances reside inside a test model, while external balances reside outside the test section.

Specifications of Pyramidal Balance

Small Pyramidal Balance

• Approximate resolving center height – 12 inches
• Minimum required height below test section – approximately 13 inches

Medium Pyramidal Balance

• Approximate resolving center height – 16 inches
• Minimum required height below test section – approximately 46 inches

Large Pyramidal Balance

• Approximate resolving center height – 40 inches
• Minimum required height below test section – approximately 40 inches