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H6910-12 Wind Tunnel Stats
H6910-12 Wind Tunnel Stats
The Hampden Model H-6910-12 has:
0 - 150 MPH capability [6]
1' square test section
Control panel
Rolling base
Inlet and Outlet cones
Interchangeable mounting collets connected by 12mm bolts
Open loop, academic tunnel
Safety
Safety
Must wear safety glasses and earplugs when the machine is running
Clean the area of any loose items that could be pulled into the machine
Make sure that the wind tunnel is plugged in correctly
Running the System Steps
Running the System Steps
To set up the machine, make sure to:
Unlock Wheels
Pull the machine until the inlet is approximately one diameter worth away from the wall
When in place, lock the wheels
To start the machine, use the control panel to:
Push the lever upwards until it locks into place to supply power (yellow box)
Press the FWD button (green box)
Control wind speed with arrow keys (blue boxes)
To stop the machine, use the control panel to:
Lower wind speed to zero (blue boxes)
Press the red "STOP" button (red box)
Flip the power lever downwards (yellow box)
Unplug machine
To put away the machine, make sure to:
Wrap up any used wires (mainly the plug and data recording cords)
Push the wind tunnel back into place
Lock wheels
Our Setup
Our Setup
For our experiment, we used a rig developed and previously used for research at Olin College. The rig consists of an airfoil and three weights (for the mass moment of inertia) [7,8,11]. We added an accelerometer for our data recording.
While running our tests, we decided to connect the accelerometer to the top of the plunge bar of the rig in order to record our oscillation data. This only allowed us to record the acceleration of the plunge, but was still enough for us to record the basic oscillatory behavior of the airfoil.
In our tests, there were three sets of parameters we changed, which were the mass moment of inertia, the mass, and the wind speed. The reasoning behind changing the wind speed was to see the effects that wind speed has on an airfoil in the case of flutter. Changing the mass and moment of inertia represents the effect of lightweighting the components of an airframe.
Due to this, we ended up running a total of three tests, ranging from 0-90 MPH, with weights varying from 0.223kg to 0.476kg. For more information on the data collection, please go to "Data Analysis".
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