Projects / Mechanical / Project 66

Mini Subsonic Wind Tunnel: Airfoil Lift and Drag

Approx. component budget: Rs. 14,000 - 18,000

Objective

Measure lift and drag on an airfoil such as NACA 0012 at different angles of attack and speeds and compare with published data.

What you will build

An open-circuit wind tunnel with a bell-mouth inlet, honeycomb, test section, diffuser and a fan with speed control, plus an airfoil holder on a force balance.

Results you can expect

• Lift and drag coefficients vs angle of attack
• Stall angle
• Flow uniformity in the test section
• Comparison with published curves

What you will learn

Aerodynamics, wind tunnel design, force measurement and flow visualisation.

Tools and notes

Load cells + HX711, anemometer or pitot tube, CAD, Excel. Needs a large workspace, a guard on the fan and a well-balanced fan.

Resume points from this project

• Built and tested Mini Subsonic Wind Tunnel: Airfoil Lift and Drag; objective: measure lift and drag on an airfoil such as NACA 0012 at different angles of attack and speeds and compare with published data.
• Measured and analysed lift and drag coefficients vs angle of attack and stall angle; wrote the report and presented the results in a viva. Add your own numbers: [x].

Replace [x] with your own measured results. Write only what you really did.

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