today nasa uses wheeled rovers to navigate the surface of mars and conduct planetary science but recently funded research involving texas a&m university scientists will test the feasibility of new surface-exploration technology: walking robots ryan ewing robert r berg professor in the department of geology and geophysics at texas a&m and marion nachon associate research scientist in geology and geophysics are co-investigators on the three-year $3-million research project funded by nasa and led by feifei qian a wise gabilan assistant professor at the university of southern california viterbi school of engineering the aim of the research is to create and test walking or "legged " robots that could more easily glide through icy surfaces crusted sand and other difficult-to-navigate environments thus significantly enhancing scientists abilities to gather information from planetary bodies while the mars exploration rovers and other robots have been successfully sent into space they typically operate based on pre-programmed agendas that require human scientists and engineers to input detailed instructions regarding where to go and what to do prior to the robots arrival at the planet as a result when the robot encounters unexpected scenarios or discovers interesting measurements it has limited capabilities to adapt its plan this can hinder how robots and rovers navigate new environments or even cause them to miss scientific opportunities ewing says that enhanced understanding of how to integrate robotics technology with both planetary science and cognitive science will improve robot-aided exploration of planetary environments this project aims to test next-generation high-mobility robots that can agilely move through planetary surfaces and flexibly support scientific exploration goals we will conduct this research in two key planetary analog sites that present well-defined gradients in soil types from crusty sand at white sands dune field new mexico to icy rock mixtures at mt hood oregon ewing explained our objective is to integrate high-mobility legged robots with embedded terrain-sensing technologies and cognitive human decision models to study the geotechnical properties of these soils the project employs bio-inspired robots with legs meaning their form is modeled after animals unique abilities to move well on challenging surfaces like soft sand utilizing the latest direct-drive actuator technology these robots can feel the terrain (eg sand softness and rock shapes) through their legs this ability allows the legged robots to interact with the environment in the same manner as animals adjusting their movement as needed as qian puts it these robots are modeled in a manner that allows them to not just mimic how the animals look but really understand what makes these animals successful on different terrains the ability to feel the terrain using legs also allows these legged robots to easily gather information about the environment as they move around and adjust exploration strategies based on this information well be working to determine how the friction and erodibility of different soils is affected by surface crusts rock-covered soils and ice content ewing explained we will deploy the direct-drive legged robots to map soil strength at two sites that are like landscapes on the moon mars and other worlds we will simultaneously measure environmental parameters that control soil strength including particle size and shape soil moisture chemical composition and ice content as scientists continue to aspire to explore planetary environments qian notes the advantages of sending robots and rovers on initial missions to gather information before sending humans are significant even for environments where it's safe to send astronauts mobile robots can integrate scientific instrumentation and help take precise measurements while moving around qian said the research group also includes scientists from the university of pennsylvania georgia institute of technology nasas johnson space center temple university and oregon state university this is the dream team and a very rare chance to bring a team with all the components into one project qian said media contacts: leslie lee leslielee@tamuedu