Transplantation of donor hearts after circulatory death using normothermic regional perfusion and cold storage preservation

peer reviewe

AUTONOMOUS OPERATIONS OF A MICRO-ROVER FOR GEO-SCIENCE ON MARS

ABSTRACT. This paper describes the end-to-end control system used to program and supervise autonomous operations of a micro-rover placed on the Mars surface by a lander spacecraft. This rover, named Nanokhod, is characterised by an exceptionally high payload-mass/total-mass ratio. The Nanokhod weighs only about 3 kg but carries a payload of about 1.5 kg of scientific instruments. This is achieved by providing power to the rover from the lander through the tether rather than from energy sources on the rover. The tether also carries data and commands between the lander and the rover. To accomplish the required autonomy within the restrictions of the mission scenario, a novel end-toend control system has been designed, featuring a control station to program high-level commands for the lander-rover pair. These commands are uplinked to the space segment to be executed autonomously. Data uploaded to the space segment during a communications window describes rover and lander operations for an entire day