Experimental Quadcopter Airframe

grabcad

A Quadcopter Airframe, principially designed for experimental use.In place of velco strips you can use o-rings or rubber bands,for an alternative fastening of the four speed controllers, electronicsand the battery.The improvement of this design is still in progress and updateswill come after time to time, just right before ending of submission.This design - not really attractive, but may be with functional significance -will be my one and only entry for this amazing challenge.The link to individual adaptable velcro straps:http://www.klettladen.de/index.php/cPath/2_39Notes:Modeled with »PTC Creo Parametric 2.0«FEM-Analysis done with »PTC Creo Simulate 2.0«The 3D-model of the propeller, I used in the assembly,has been created by our member "Stavros Salampoukidis".Many thanks to him for sharing!Engineering specifications, just as a reminder:Max. permissible mass of airframe: 90 gMass of electronics: 42 gMass of batterie: 47 gTotal mass of motors and propellers: 26 gMass of wires: 25 gMass of payload: 250 gTotal permissible mass (without airframe): 390 gForce of each motor: 1,17 N (120 g)Total force of the four motors: 4,68 N (480 g)Properties of my model:Selected material: Ultem 9085Density of material: 1,34 g/cm^3Volume of part: 14 cm^3Mass of part: 18,8 gMechanical values for FEM-Simulation:Material Strength Allowable: 4500 PSIYoung's Modulus: 325 KSIPoissons Ratio: 0,41Load in Z-direction: 0,45 kg-fResults of FEM-Analysis ( see also uploaded » Application-Snaps « ) :Max. displacement after deformation: 0,103 mmMax. "Stress von Mises" : 4354,3 psiThe model is available in STEP (.stp)- and (.stl)-format.