Flutter of Flexible Hydrofoil Struts 



x local rate of change of twist along elastic axis dG/dy 



o) circular frequency of oscillation 



o) circular frequency of first torsional vibration in air 



SUBSCRIPTS 



i subscript to indicate that the parameter is associated 



with ith strip station on strut 



n subscript to indicate that the parameter is perpendicular 



to elastic axis 



SUPERSCRIPT 



( • ) dot over a quantity indicates differentiation with respect 



to time 



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369 



