Shock Source Assessment of a Separation Nut
The shock output of a pyrotechnic separation nut is presented and the events contributing to the overall shock output are identified. Events are separated into ignition, internal impacts, and thread segment bolt release. The events are isolated and the resulting shock response spectrums are compared against the overall SRS. The results indicate that, for the separation nut under study, the ignition event is not a contributor to the overall output shock and that the thread segment/ bolt release primarily drives the high frequency component of the shock output.
This paper describes the application of a parameter optimizing technique to determine numerical values for a circuit model of a squirrel-cage induction machine. The model includes the effects of magnetic saturation of the main and leakage flux paths and skin effect in the rotor bars. All parameters have been measured at different voltage levels up to the rated value to demonstrate the effect of magnetic saturation.