The evolution and physics of the common envelope ( CE ) phase are still not well understood .
Jets launched from a compact object during this stage may define the evolutionary outcome of the binary system .
We focus on the case in which jets are launched from a neutron star ( NS ) engulfed in the outer layers of a red giant ( RG ) .
We run a set of three-dimensional hydrodynamical simulations of jets with different luminosities and inclinations .
The luminosity of the jet is self-regulated by the mass accretion rate and an efficiency \eta .
Depending on the value of \eta the jet can break out of the BHL bulge ( ‘ ‘ successful jet '' ) and aligns against the incoming wind , in turn , it will realign in favour of the direction of the wind .
The jet varies in size and orientation and may present quiescent and active epochs .
The inclination of the jet and the Coriolis and centrifugal forces , only slightly affect the global evolution .
As the accretion is hypercritical , and the specific angular momentum is above the critical value for the formation of a disk , we infer the formation of a disk and launching of jets .
The disks ’ mass and size would be \sim 10 ^ { -2 } M _ { \odot } and \gtrsim 10 ^ { 10 } cm , and it may have rings with different rotation directions .
In order to have a successful jet from a white dwarf , the ejection process needs to be very efficient ( \eta \sim 0.5 ) .
For main sequence stars , there is not enough energy reservoir to launch a successful jet .