A rotary beater is provided which comprises a drive shaft adapted to be coupled to a drive arrangement and defining a longitudinal axis about which the beater is rotatable. This new method permits utilization of the advantages of SSFP methods also for spectroscopic recordings, in particular for chemical shift imaging. According to the present invention, there is an advantage in that mutual connection and control between devices present in the separate networks can be made by connecting the separate networks with one another. The length of the ZCZ is guaranteed to be larger than a cyclic prefix length of OFDM data symbols synchronization accuracy. The loops and the joiners are fabricated of heat resistant materials capable of maintaining physical integrity in an event of combustion of the battery pack such that the battery containment mesh can carry a weight of the battery pack after the event of combustion. The entire assembly is then wrapped with a tow of graphite fibers wetted with an epoxy resin and, after the epoxy resin is cured, the graphite is machined to final dimensions.