Patent ID: 11867487
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. A projectile comprising:
a member that forms an interior space extending along an axis of the projectile and that comprises a trailing end and a leading end, wherein the trailing end comprises a gas inlet operably coupled to the interior space, and wherein the leading end comprises a gas outlet operably coupled to the interior space;
a rotor oriented for rotation about the axis and releasably retained in a rearward position in the interior space, wherein the rotor comprises a piston and the interior space comprises a cylinder for the piston, and wherein the rotor and the member comprise a helical pair; and
a gas bearing comprising a forward portion of the interior space, a forward surface of the rotor, and an internal surface of the member that faces the forward surface, the gas bearing comprising a thrust bearing.