  In this paper, it is aimed to determine the radii of starlikeness and
convexity of the normalized generalized Struve functions for three different
kinds of normalization and to find tight lower and upper bounds for the radius
of starlikeness and convexity of these normalized Struve functions by making
use of Euler-Rayleigh inequalities. The Laguerre-P\'olya class of entire
functions has a crucial role in constructing our main results.
