  We present hydrodynamical calculations carried out with the 3D yguazu-a code
of a precessing jet model, which interacts with a plane parallel wind. This
scenario describes an extragalactic jet, in which the jet source is in motion
with respect to the surrounding intra-cluster medium. From the numerical
results, synthetic emission maps and spectra in X-ray band were obtained. We
compare these predictions with observations of the radio jets emanating from
the radio-galaxy 4C 26.42 (in the Abell 1795 galaxy cluster). We find that the
general morphology of the radio jets can be described by a point-symmetric
precessing jet system interacting with a plane parallel wind (i.e., the
intra-cluster medium flowing past the galaxy). We also find that our synthetic
X-ray emission maps reproduce the observed large scale structures (with sizes
of the order of tens of kpc).
