Taking the gas radial hybrid bearing as research object,considering the turbulent lubrication,the improved compressible Reynolds equation with turbulence factor was solved by the finite difference method.The pressure distribution of the turbulently lubricated gas hybrid journal bearings was calculated.The basic parameters of bearing capacity,static stiffness,cross stiffness,principal stiffness,cross damping and principal damping were obtained to characterize the static and dynamic characteristics of gas hybrid journal bearings.The influences of structural parameters such as eccentricity,groove depth,groove number and lengthtodiameter ratio,and the conditions of journal speed and air supply pressure on the dynamic and static performance of the bearing were analyzed.The results show that the static characteristics of continuous slotrestriction turbulent lubrication static gas hybrid journal bearings are better than those of discontinuous slotrestrictions.The bearing capacity is increased with the increase of eccentricity and lengthtodiameter ratio,and decreased with the increase of groove length and groove depth,while the groove number has little effect on the bearing capacity.The static stiffness of bearing is first increased and then decreased with the increase of eccentricity,and it is increased with the increase of lengthtodiameter ratio,groove depth and groove number,and decreased with the increase of groove length.The large eccentricity and the higher rotational speed can improve bearing capacity and static stiffness of the bearing.With the increase of eccentricity,the cross stiffness is increased gradually,the main stiffness is increased first and then decreased,while the cross damping and main damping are increased.