HERMESS (Hull applied ElectroResistive MEasurement of Structural Strains) is an experiment of the Bundeswehr University Munich dedicated to gaining a deeper understanding of the mechanical strains occuring within a rocket body during flight.

Even in the age of modern rocketry, the exact range of mechanical strains in rocket bodies remains difficult to characterize, as these flight loads currently are estimated using semi-empiric aerodynamic modelling experiences which can not perform with satisfying precision. 

The ambition of HERMESS is to gain knowledge about the real flight loads present in the structure and can therefore contribute to advancing the optimization of rockets. A better understanding of the real strains occurring in the structure allows lightweight engineering approaches that can lead to a better use of material, reducing mass and thereby costs.

Hereby new perspectives for rocket design are opened, furthermore countermeasures against risks that can possibly provoke a launch failure due to mechanical overloads can be assessed.

The strains, encompassing several forces and torques, can be calculated starting from measurements with electroresistive gauge strains that will feed signals to the system throughout the flight phase and later on will be subjected to a profound analysis process.