Purchasing the Wind Tunnel Fan

Dear Fellow Basement Scientists,

I hope you all are pursuing your interests and attempting to satisfy your curiosity. With many other good things, it is fun and rewarding, but can take hard work. Alright, in our wind tunnel project our next piece of construction takes us to the diffuser! Recall our general wind tunnel design (in blue), appropriately drawn on the back on an envelope, You can see the diffuser on the right of the test section, it is long and expands to larger than the fan, in order to house it:

Lift and Drag Measurement: Post 2

Fellow Basement Scientists,

The last installment brought about the development of the lift and draft measurement mechanism. However, we still needed to build the device hold it.

Before designing our anchor contraption, we must understand all of what it is meant to do. It must let the anchor screw rotate but not move, and anchor the springs while allowing their length to be adjusted. The first is easy, just drill a hole and stick the screw through it. The second is more difficult. My idea was to have instead of a hold, a slot. The spring would then be attached to a long screw which could more back and forth through the slot and tightened in place. Ok, lets build it.

Read moreLift and Drag Measurement: Post 2

Lift and Drag Measurment Gauge

On to the Next!

In order to conduct science you need measurements. For our Wind Tunnel tests investigating fluid mechanics and aeronautics we need to measure lift and drag. There are a lot of ways to measure lift and drag, but with all basement science we need to ask, “What’s available?” As usual, my what’s available is wood. This time I have a box of old balsa hobby wood. This wood was my grandfathers and was used to make little glider airplanes.

Read moreLift and Drag Measurment Gauge