25jun05 td12 trouble


        On saturday 25jun05 around noon, lightning struck tower 12. For the next 24 hours the encoder reading for td12 said that the jack was at 14 inches. On sunday 26jun05 at 18:00 a visual inspection showed that td 12 had released (the jack was at 2 inches). The plots show the tiedown positions from the encoder (.ps )  (.pdf):

    The timeline looks like:     On monday 27jun05 the little star computer was replaced as well as the amplifier for the motor. On Tues. 28jun05 the parameters were set correctly and things started to work.

    The lightning strike damaged part of the little star and it's program. Some of the problems could have been:

processing: x101/050627/tdprob.pro