The W45E from Bradford Space is a Reaction Wheel that has been part of several space missions such as SOHO, RadarSat, Seastar, and Olympus. It has a maximum torque of 0.248 Nm and momentum storage of 45 Nms. This reaction wheel has a mass of 7.45 gms and a maximum operational speed of 4000 rpm. It requires a DC supply of 28-50 V and has a power consumption of up to 168 W. This MIL-STD-1553B certified reaction wheel has a fixed torque rise time allowing precise and repeatable control over full speed/torque range and measures 365 x 125 mm.