At a dia of 5 in, the centripetal force exerted by a blade is calculated, as though the entire mass of that blade is located 2.5 in from the center. With a blade weight of 1.2704 ozs, 19,257.79 lbs/sq in would be exerted on the total area of each "T" shaped blade leg & each hexagon leg. At 40,000 rpm, the amount of this force is well below the yield & fatigue strength of the 2024-T351 aluminum used to make all parts. In fact, this device would tolerate 45,000 rpm while the force exerted would be increased to 24,373.61 lbs/sq in.