Abstract: Methods and systems to control stacked hexapod platforms for use as tools, which function with both high accuracy and high precision are provided. In some embodiments, the methods and systems include a convergence of modern control theory, and machine learning. Furthermore, some embodiments provide control algorithms to carry out autonomous in-space assembly operations using assemblers. Some embodiments provide methods and systems which combine long-reach low precision manipulators and smaller, high-precision assembler with interchangeable tools.

Abstract: A locomotive is provided with an enlarged cab having "split level" sections for accommodating the engineer and other members of the train crew. A first upper section includes seating space for the engineer adjacent to the console with good visibility to the front and back, the engineer's line of sight being above the crew members in a lower section of the cab, and on the opposite side of the cab there is an additional upper section that provides an operating station for the engineer's assistant. In the lower section of the cab seating space is provided for at least one crew member. A writing surface (for performing clerical work) adjacent to seating space for the train conductor, with external visibility along a line of sight parallel to the sides of the railroad cars being propelled by the locomotive, is provided either in the lower section or in the additional upper section of the cab.