Balsa Wooden Fidget Spinner

grabcad

A FIDGET SPINNER to use as a VENTILATOR and /or as a HELICOPTER.Whether this model has a chance for a TAKE OFF, I really don't know,but I think, that it can be surely used for a very short time, as a VENTILATOR for a "Mild Breeze".Notes:1.) Dimensions of the ball bearing: Ø22 mm / Ø8 mm x 7 mm thick2.) CAD-calculated mass of the ball bearing: 11,2 g3.) Material for all other components: balsa wood4.) The density of balsa wood (used for CAD-Calculation): 0,18 g/cm^35.) The CAD-calculated mass of the complete FIDGET SPINNER: 14,27 g6.) The TAKE OFF FORCE needed: > ( 0,01427 kg ) x ( 9,81 m/s ) = 0,14 NIf anybody is able to make a FEM-Calculation, which force can be reached,F = f (n), » force is function of the rotation speed « ,I would be very grateful for the feedback.The angle of attack and further propeller blade geometrycan be taken from the model.The model is available in following data formats:STEP-file (.stp) of the complete assembly and the native files (.prt) and (.asm),together in a (.zip)-folder, for users of »PTC Creo Parametric 2.0«A seperate STEP-file (.stp) and a STL-file (.stl) is available too, for a metal- or plasticversion of the ball bearing carrier .