The HC9 from Honeywell Aerospace is a Satellite Reaction Wheel that is designed for small satellites with a mission life of about 7 years and a storage life of about 2 years. It has a torque of 0.2 Nm and an angular momentum of 11.5 Nms. This radiation-hardened reaction wheel features a proven spin-bearing design and optimized momentum density packaging. It has a radiation tolerance of greater than 20 Krad (Si) and supports the RS-422 digital bus interface. The reaction wheel requires a supply voltage of 28 V and has a peak system power consumption of 130 W. It has a mass of less than 5.5 kg and measures 115 x 250 mm in dimension.
