  We study the subgap spin and charge transport in normal
metal-ferromagnet-superconductor trilayers induced by bias voltage and/or
magnetization precession. Transport properties are discussed in terms of
time-dependent scattering theory. We assume the superconducting gap is small on
the energy scales set by the Fermi energy and the ferromagnetic exchange
splitting, and compute the non-equilibrium charge and spin current response to
first order in precession frequency, in the presence of a finite applied
voltage. We find that the voltage-induced instantaneous charge current and
longitudinal spin current are unaffected by the precessing magnetization, while
the pumped transverse spin current is determined by spin-dependent conductances
and details of the electron-hole scattering matrix. A simplified expression for
the transverse spin current is derived for structures where the ferromagnet is
longer than the transverse spin coherence length.
