A Robot Called Horse
This video depicts field testing of the DARPA Legged Squad Support System (LS3). The goal of the LS3 program is to demonstrate that a legged robot can unburden dismounted squad members by carrying their gear, autonomously following them through rugged terrain, and interpreting verbal and visual commands.
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How is this different to BigDog?
I think it’s the next generation — larger and with the ribs to let it right itself.