A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure. The braking system is configured to enable precession in the first and second directions.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure. The braking system is configured to enable precession in the first and second directions.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure. The braking system is configured to enable precession in the first and second directions of up to at least 45 degrees.

The invention relates to an inertial sensor (1) comprising a substrate extending along a drive excitation direction (x) and a detection direction (y) normal to each other, the device plane being perpendicular to a rotation direction (z), a first drive frame (110) and a second drive frame (120), a first sense frame (210), a second sense frame (220), a sense lever (1000) pivotably mounted around a rotation axis (1001), a sensing system comprising a strain gauge (1600) mechanically stressed by the sense lever it is rotating around the rotation axis. The sense lever includes a central portion (1500), a first arm (1100) and a second arm (1200), the central portion having a dimension along the detection direction called central width, the arms having a dimension along the detection direction called arm width, the central width being at least twice greater than the arm width.

The invention relates to an inertial sensor (1) comprising a substrate extending along a drive excitation direction (x) and a detection direction (y) normal to each other, the device plane being perpendicular to a rotation direction (z), a first drive frame (110) and a second drive frame (120), a first sense frame (210), a second sense frame (220), a sense lever (1000) pivotably mounted around a rotation axis (1001), a sensing system comprising a strain gauge (1600) mechanically stressed by the sense lever it is rotating around the rotation axis. The sense lever includes a central portion (1500), a first arm (1100) and a second arm (1200), the central portion having a dimension along the detection direction called central width, the arms having a dimension along the detection direction called arm width, the central width being at least twice greater than the arm width.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure. The braking system is configured to enable precession in the first and second directions of up to at least 45 degrees.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure.

A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure.