  We present the results of a numerical study focusing on the propagation of a
hypersonic bullet subject to radiative cooling. Our goal is to explore the
feasibility of such a model for the formation of ``strings'' observed in the
Eta Carinae Homunculus nebula. Our simulations were performed in cylindrical
symmetry with the adaptive mesh refinement code AstroBEAR. The radiative
cooling of the system was followed using the cooling curve by Dalgarno & McCray
(1972). In this letter we discuss the evolution and overall morphology of the
system as well as key kinematic properties. We find that radiative bullets can
produce structures with properties similar to those of the Eta Carinae strings,
i.e. high length-to-width ratios and Hubble-type flows in the form of a linear
velocity increase from the base of the wake to the bullet head. These features,
along with the appearance of periodic ``ring-like'' structures, may also make
this model applicable to other astrophysical systems such as planetary nebulae,
e.g. CRL 618 and NGC 6543, young stellar objects, etc.
