WIND TUNNEL TESTS OF SOLID STATE STRAIN GAGES,
Abstract
Investigations have been conducted on the use of solid state or semiconductor strain gages to increase the accuracy, range, and/or stiffness of wind-tunnel balances and pressure transducers. One of the main stimulants of this investigation is the need to improve the measuring accuracy of Magnus forces and moments acting on spinning projectiles. Semiconductor strain gages have gage factors 30 to 100 times larger than wire-wound strain gages so that increased sensitivities and accuracies are possible. The principal difficulty with semiconductor strain gages in the past has been the severe temperature effects. It is now possible to temperature compensate these gages so that they respond only to strain. This report will describe the temperature compensation, the calibration, and the use of a Magnus balance for measuring the Magnus moments on a spinning projectile. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1968
- Accession Number
- AD0673105
Entities
People
- A. S. Platou
- H. A. Ricci
Organizations
- Ballistic Research Laboratory