Latch assembly for an aircraft propulsion system

A latch assembly for an aircraft propulsion system, the latch assembly comprising:

• a first latch assembly portion including a latch body, a latch handle, and a hook, the latch body extends between and to a first latch end and a second latch end, the latch body forms a hook aperture at the first latch end, the latch handle is pivotably mounted to the latch body at the second latch end, the hook includes a shaft, a hook body, and a retention assembly, the shaft is mounted to the latch body within the hook aperture, the hook body extends between and to an outer body side and an inner body side, the outer body side is disposed facing the latch handle, the hook body forms a groove at the inner body side, the groove extends about a pin axis, the hook body forms a slot at the outer body side, and the retention assembly includes a semi-annular stopper, a rack, and a pinion gear,
• the semi-annular stopper is disposed within the groove, the semi-annular stopper extends about the pin axis between and to a first end and a second end, the semi-annular stopper includes an outer radial surface and an inner radial surface, the semi-annular stopper includes a stopper gear surface at the outer radial surface, and the semi-annular stopper is pivotable in the groove about the pin axis between and to an extended pivot position and a retracted pivot position,
• the rack is disposed within the slot, the rack extends between and to an outer rack side and an inner rack side, the outer rack side is disposed at the outer body side, the rack includes a linear rack gear surface at the inner rack side, and the rack is translatable within the slot between a first translation position and a second translation position, and
• the pinion gear is disposed within the hook body, the pinion gear is rotatable about a rotational axis, the pinion gear includes a pinion gear surface, and the pinion gear surface is engaged with the stopper gear surface and the linear rack gear surface.

A latch assembly for an aircraft propulsion system, the latch assembly comprising:

• a first latch assembly portion including a hook, the hook includes a hook body and a retention assembly,
• the hook body forms a hook engagement surface of the hook, the hook engagement surface extends about a pin axis, the hook body forms a groove at the hook engagement surface, the groove extends about the pin axis, and the hook body forms a slot, and
• the retention assembly includes a semi-annular stopper, a rack, a pinion gear, and a biasing member,
• the semi-annular stopper is disposed within the groove, the semi-annular stopper extends about the pin axis between and to a first end and a second end, the semi-annular stopper includes an outer radial surface and an inner radial surface, the semi-annular stopper includes a stopper gear surface at the outer radial surface, and the semi-annular stopper is pivotable in the groove about the pin axis between and to an extended pivot position and a retracted pivot position,
• the rack is disposed within the slot, the rack extends between and to an outer rack side and an inner rack side, the rack includes a linear rack gear surface at the inner rack side, and the rack is translatable within the slot between a first translation position and a second translation position,
• the pinion gear is disposed within the hook body, the pinion gear is rotatable about a rotational axis, the pinion gear includes a pinion gear surface, and the pinion gear surface is engaged with the stopper gear surface and the linear rack gear surface, and
• the biasing member is disposed within the slot, and the biasing member is disposed between the hook body and the rack to bias the rack in the second translation position.