Patent ID: 11939077
Assignee: TEXTRON INNOVATIONS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A convertible engine for an aircraft, comprising:
an engine core comprising a low pressure turbine shaft; and
a bypass fan system comprising:
an inner fan disposed longitudinally along a length of the low pressure turbine shaft;
an outer fan disposed at least partially concentrically around the inner fan and at least partially longitudinally overlapping the inner fan along the length of the low pressure turbine shaft; and
a fan clutch disposed at least partially concentrically around the inner fan and at least partially longitudinally overlapping the inner fan along the length of the low pressure turbine shaft, the outer fan disposed at least partially concentrically around the fan clutch, and the fan clutch being disposed at least partially longitudinally overlapping the outer fan along the length of the low pressure turbine shaft;
wherein the fan clutch is configured to selectively rotationally decouple the outer fan from the inner fan.