lunar polar solar power A Lunar rail car carrying solar panels is [] at the Lunar pole. A circumpolar railroad lets the panels always face the sun.. Take a look at http://lifekills.wordpress.com/2009/02/23/space-based-solar-power-and-microwave-transmission/ The moon rotates in 28 days or 572 hours. If you select a latitude with a circumference of 1144 mile then high noon rotates at 2 miles per hour. A [] panel on a train car tracks the sun moving counterclockwise or toward Lunar east. p. 772 Mechatronics: [] By Clarence W. De Silva "When operating at high torque ..., the motor speeds have to be quite low for a given level of power. ... torque motors are particularly suitable for high-precision, direct-drive applications .... Torque motors are widely [in use] as valve actuators in hydraulic servo-valves where large torques and very small displacements are required ..." The following describe an electric motor [by] Morgan Precon Inc. A division of Morgan Power Apparatus [in] subcontract [with] Westinghouse to drive valve actuators in nuclear power plants: A ring gear with 360 vertical and radial teeth about one centermeter radially and taper[ing] vertially 3/4 centimeter. Place[] at the upper edge of a sturdy metal canister and surrounding 6 electromagnets with surfaces following a shallow cone[,] pot[] in valox and allow[] a central drive shaft. The drive shaft attach[es] to 6 way toggling bushing and a matching radial tooth[] gear around a similarly conical and magneticallly permeable metal. This gear however has 361 teeth. As the first magnet [] activate[s] the upper gear's teeth mesh with the lower. After the sixth the upper gear [] advance[s] one tooth. Continuing this process the upper gear rotates the drive shaft. Torque is very immediate and sustain[s]. Stopping with [meshing]gears [] is [] definite. Free wheeling is with gears [not] mesh[ing]. Vehicles with such motors at each wheel drive horizontal and vertical boring equipment, simalarily driven, across the lunar terrain. Suppose during some revolution that the torque is insufficient for the load. One or both of two things must occur: i. The gears disengage and the order the electromagnets magnetize [] reverse[s] ii. The order of the magnetization [] reverse[s] and the gears disengage Such [] circumstances [change] the characteristic clatter of the drive gear.