Abstract: A system and method for measuring a mass of fuel contained in a variable geometry container. The container comprises a container assembly, formed by a variable geometry container disposed on a rigid support, a three-axis load cell coupled with the rigid support and providing a first set of three signals with a magnitude proportional to the force exerted by the container assembly, a three-axis accelerometer coupled with the rigid support and providing a second set of three signals with a magnitude proportional to the acceleration to which the container assembly is subjected, and a signal processing device configured to convert the first and the second set of signals into force and acceleration data, for three perpendicular directions of the space, and configured to calculate a measure relative to the mass of fuel contained in the variable geometry container.