  Deformed aerogels induce a global anisotropy in the superfluid 3He and orient
the orbital part of its order parameter. Here a phenomenological theory of the
orientational effect of elastic deformations of aerogels on the superfluid
phases of 3He in the spirit of conventional theory of elasticity is formulated.
Phenomenological coefficients, entering basic relations, depend on properties
of given aerogel in the non-deformed state. Examples of originally isotropic
silica aerogel and axially symmetric "nematically ordered" aerogel are
considered. Values of phenomenological coefficients are estimated with the aid
of a simple microscopic model. An example of a nonuniform deformation of
"nematically ordered" aerogel is discussed.
