Answers are grounded in this paper and cite their sources.
The effect of a return line orifice on the steady-state performance and dynamic characteristics of a servovalve flapper/nozzle stage is investigated. Generalized design characteristics are initially developed and a specific application is then pursued by including torque motor dynamics. The possible cause of high frequency whistle within such systems is then discussed. A sufficient condition for valve whistle is established and shown to be critically dependent upon the supply pressure.
No takes yet. Share an insight, caveat, or question.
J. Watton (1987) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: