The biomechanics of serpentine locomotion have been examined. Apparently it is very similar to legged locomotion. In the unlikely case ESA wants to build a serpentine robot, this paper should be a first read.
FEM modelling of bone structures in woodpeckers combined with high speed video of pecking motion etc
headgear? shock absorbing structures? low mass hammering penetrators?
Lizhen Wang1,2, Jason Tak-Man Cheung3, Fang Pu1, Deyu Li1, Ming Zhang2*, Yubo Fan1* 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China, 2 Department of Health Technology and Informatics, the Hong Kong Polytechnic University, Hong Kong, 3 Li Ning Sports Science Research Center, Beijing, People's Republic of China Head injury is a leading cause of morbidity and death in both industrialized and developing countries.
"...the woodpecker does not experience any head injury at the high speed of 6-7 m/s with a deceleration of 1000 g when it drums a tree trunk. It is still not known how woodpeckers protect their brain from impact injury...."