Strain gage to measure drag in a wind tunnel?

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SUMMARY

The discussion focuses on the application of strain gages for measuring drag forces in wind tunnel experiments. Participants explore the optimal placement of strain gages, specifically on the model or around the sting, to accurately capture the drag force. The relationship between drag and the mechanical principles of tension and compression is emphasized, highlighting the importance of understanding drag as a force acting on the model.

PREREQUISITES
  • Understanding of strain gage technology and its applications
  • Basic principles of fluid dynamics, specifically drag forces
  • Knowledge of mechanical stress concepts, including tension and compression
  • Familiarity with wind tunnel testing methodologies
NEXT STEPS
  • Research the installation techniques for strain gages on aerodynamic models
  • Study the fundamentals of drag force and its measurement in fluid dynamics
  • Explore the mechanics of bending beams and their relevance to strain measurements
  • Investigate advanced wind tunnel testing setups and instrumentation
USEFUL FOR

Aerospace engineers, experimental physicists, and anyone involved in wind tunnel testing and drag force measurement will benefit from this discussion.

gsjbjt
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How would a strain gage be set up (on top of the model? around the sting?) to measure drag? I don't quite understand the connection between the force of drag and some sort of compression/tension force...?

Thanks for the clarification.
 
Engineering news on Phys.org
Consider: what is drag? Where does it come from?
 
Think of a bending beam...
 

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