{"id":1144,"date":"2022-01-12T15:15:04","date_gmt":"2022-01-12T14:15:04","guid":{"rendered":"http:\/\/devastrofein.mattheis-berlin.de\/reaction-wheel-rw1\/"},"modified":"2023-04-25T12:21:33","modified_gmt":"2023-04-25T10:21:33","slug":"reaction-wheel-rw1","status":"publish","type":"page","link":"https:\/\/www.astrofein.com\/en\/reaction-wheels\/reaction-wheel-rw1\/","title":{"rendered":"Reaction Wheel RW1"},"content":{"rendered":"

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Reaction Wheel RW1 for Small Satellites<\/h1>\n

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RW1 Features:<\/h2>\n
    \n
  • Separate wheel drive electronics (WDE) for up to four Reaction Wheels<\/li>\n
  • PI controller for speed and acceleration<\/li>\n
  • Two different rotating masses available (Type A or Type B)<\/li>\n
  • Four different standard data interfaces available<\/li>\n
  • ow level emitted vibrations, due to the mechanical design and the high level of alignments and balancing<\/li>\n<\/ul>\n

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    RW1<\/h3>\n
    \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
    \n Parameter <\/td>\n \n Type A <\/td>\n \n Type B <\/td>\n <\/tr>\n
    \n Angular momentum <\/td>\n \n
    5.8 E-4<\/sup> Nms<\/div> <\/td>\n
    		\n
    1.0 E-4<\/sup> Nms<\/div> <\/td>\n <\/tr>\n
    \n Nominal rotation speed <\/td>\n \n 8000 rpm <\/td>\n <\/tr>\n
    \n Maximum rotation Speed <\/td>\n \n \u2248 16 380 rpm <\/td>\n <\/tr>\n
    \n Speed Resolution <\/td>\n \n 0.25 rpm (1LSB) <\/td>\n <\/tr>\n
    \n Nomial Torque (max. commandable) <\/td>\n \n
    23 E-6<\/sup>Nm<\/div> <\/td>\n
    		\n
    4 E-6<\/sup>Nm<\/div> <\/td>\n <\/tr>\n
    \n Torque Deviation \u2013 rms value <\/td>\n \n
    <2.2 E-6<\/sup>Nm<\/div> <\/td>\n
    		\n
    0.8 E-6<\/sup>Nm<\/div> <\/td>\n <\/tr>\n
    \n Power interface <\/td>\n <\/tr>\n
    \n Supply voltage <\/td>\n \n 5 V <\/td>\n <\/tr>\n
    \n Power consumption for\nWDE1 (stand by, motor off,\nPwde) <\/td>\n \n
    \n
    WDE for 1 wheel<\/div>\n
    WDE for 3 wheels<\/div>\n
    WDE for 4 wheels<\/div>\n<\/div> <\/td>\n
    		\n < 250 mW
    \n< 350 mW
    \n< 500 mW <\/td>\n <\/tr>\n
    \n
    \n
    maintaining nominal<\/div>\n
    rotation speed1,2<\/sup><\/div>\n<\/div> <\/td>\n
    		\n < 275 mW + PWDE<\/sub> <\/td>\n \n < 200 mW + PWDE<\/sub> <\/td>\n <\/tr>\n
    \n
    maximum consumption1,2<\/sup><\/div> <\/td>\n
    		\n < 375 mW + PWDE<\/sub> <\/td>\n \n < 300 mW + PWDE<\/sub> <\/td>\n <\/tr>\n
    \n Mechanical interface <\/td>\n <\/tr>\n
    \n Mass (including 40 cm\ncable) <\/td>\n \n \u2264 24 g <\/td>\n \n \u2264 15 g <\/td>\n <\/tr>\n
    \n WDE Mass <\/td>\n \n \u2264 45 g <\/td>\n <\/tr>\n
    \n Moment of inertia <\/td>\n \n
    694.5 E-9<\/sup> kg m2<\/sup><\/div> <\/td>\n
    		\n
    119.5 E-9<\/sup> kg m2<\/sup><\/div> <\/td>\n <\/tr>\n
    \n Dimension Single Wheel <\/td>\n \n
    21 x 12 x 21 mm3<\/sup><\/div> <\/td>\n
    		\n
    21 x 12 x 21 mm3<\/sup><\/div> <\/td>\n <\/tr>\n
    \n Temperature <\/td>\n <\/tr>\n
    \n Operation <\/td>\n \n -20 \u00b0C to +50 \u00b0C <\/td>\n <\/tr>\n
    \n Non-operation <\/td>\n \n -40 \u00b0C to +65 \u00b0C <\/td>\n <\/tr>\n
    \n Design lifetime <\/td>\n \n 1 year in LEO <\/td>\n <\/tr>\n
    \n Storage time <\/td>\n \n 2 years including 250h of ground operation <\/td>\n <\/tr>\n
    \n
    \n
    1<\/sup> … values determined at ambient temperature (~25 °C), vacuum<\/div>\n
    2<\/sup>… based on the operation on 1 x RW1<\/div>\n<\/div> <\/td>\n <\/tr>\n <\/table>\n<\/div>