Need help constructing a wind tunnel

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SUMMARY

The discussion focuses on constructing a wind tunnel for a Year 11 physics project, specifically addressing the challenge of mounting an aerofoil securely while allowing for adjustable angles of attack. The wind tunnel is constructed from cardboard and is circular in design. The mounting solution must ensure stability during airflow from the fan while enabling the measurement of lift using a fishing line connected to a triple beam balance or spring scale. The primary objectives of the experiment include determining the critical angle of attack and the angle of attack that produces zero lift.

PREREQUISITES
  • Understanding of aerodynamics principles, particularly lift and angle of attack.
  • Familiarity with basic physics experiments and measurement techniques.
  • Knowledge of constructing simple models using cardboard and other materials.
  • Experience with using balances, such as triple beam balances or spring scales, for measuring forces.
NEXT STEPS
  • Research methods for creating adjustable mounts for aerofoils in wind tunnel experiments.
  • Explore techniques for measuring lift using fishing lines and balances.
  • Investigate the principles of airflow and turbulence in circular wind tunnels.
  • Learn about the critical angle of attack and its significance in aerodynamics.
USEFUL FOR

Students in physics, educators involved in teaching aerodynamics, and hobbyists interested in building experimental wind tunnels for educational purposes.

chappy-13
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i'm currently building a wind tunnel for year 11 physics and need help mounting the aerofoil. The wind tunnel is basic (just cardboard and is circular), and i need a way to mount the aerofoil inside. The mounting has to be sturdy so that the aerofoil can have an adjustable angle of attack and will keep the same angle of attack when the fan is blowing on it, however it needs to be relatively free so that i can measure the lift using a fishing line which is attached to a triple beam balance or spring balance/scale.

any ideas?

p.s the aim of the experiment is to determine critical angle of attack, and angle of attack which produces zero lift, etc
 
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