This cost model is based on a simple linear positioning application — back and forth motion to fixed positions with low repeatability ( 60.005 in.), 800-lb thrust, 12-in. stroke, and with no ...

138 g airplane at 10.2 m/s is 7.2 J imparted to the load. His current numbers don’t add up (claims 90 amps at 48 volts, but measures 2 ohms in the maybe different coil).