Generate Quadcopter Frame Ultra - 7,73g

grabcad

This is my third entry to The Generate Quadcopter Challenge ( https://grabcad.com/challenges/the-generate-quadcopter-challenge ).Max. mass reduction of the frame - 7,73g (the greater weight reduction - simualtion failed).To optimize the shape of the frame i assumed the following:1. Forces:- Elecrtonics 42g = 0,41202N- Motor thrust 120g = 1,1772N (per motor)- Wires 25g = 0,24525N- Battery 47g = 0,46107N- Payload 250g = 2,4525N- Motors 26g = 0,25506NIn this entry (as in the second entry) I divided wires weight between electronics and motors (two parts to electronics and one to motors).- 0,24525N/3 = 0,08175NAnd the forces i used in this simulation was:- Electronics (with 4 pcs. Speed Controlers) = 0,41202N + 2x0,08175N = 0.57552N- Motors (4 pcs.) = 0,25506N + 0,08175N = 0,33681N- Motor thrust = 1,1772N (per motor)- Battery = 0,46107N- Payload = 2,4525N2. Stand - no payload (250g) and without thrust. On the surface of thrust i had to accept the minimum foce (0,01N), because when i put a zero (0N) simulation failed.3. Fly1 - surfaces of payload mounting - fixed - the wieght of components and the full thrust (it's more than just a payload)4. Fly2 - area of the thrust - fixed (only the wieght of the components)I've decided to do two load cases of fly because none separately does not reflect well the reality.Mounting electronics, battery, payload with adhesive-backed Velcro. Using zip ties is also possible.And once more: great software, a lot of new experience with shape optimizing and great fun!Thanks Frustum!Generate Link:https://generate-de.frustum.com/#/workspace/1177/scenario/3345