Abstract: A camera module includes a first circuit board on which the image sensor is mounted; a plurality of lens barrels spaced apart from the first circuit board; a carrier on which the plurality of lens barrels are mounted and configured to move along a plane intersecting an optical axis so as to align any one of the plurality of the lens barrel with the image sensor; an actuator configured to move the carrier to each of an optical axis direction and a direction intersecting the optical axis direction; and a housing receiving therein at least a portion of each of the lens barrels and the actuator.

Abstract: A side thruster module, comprises: a cavity-type body skin extending in a longitudinal direction; a first thruster arranged in the body skin and extending in a longitudinal direction; and a conversion nozzle arranged in the body skin and extending in a radial direction perpendicular to the longitudinal direction, for converting a direction of a thrust generated from the first thruster in the longitudinal direction into the radial direction. A large number of thrusters can be mounted at the side thruster module thus to generate a high thrust, and the side thruster module can be slim in the radial direction perpendicular to the longitudinal direction.

Abstract: A side thruster module, comprises: a cavity-type body skin extending in a longitudinal direction; a first thruster arranged in the body skin and extending in a longitudinal direction; and a conversion nozzle arranged in the body skin and extending in a radial direction perpendicular to the longitudinal direction, for converting a direction of a thrust generated from the first thruster in the longitudinal direction into the radial direction. A large number of thrusters can be mounted at the side thruster module thus to generate a high thrust, and the side thruster module can be slim in the radial direction perpendicular to the longitudinal direction.

Abstract: A method for assembling a rocket propulsion motor including a motor case and a nozzle assembly, wherein the assembling is carried out under vacuum so that air can not be presented between a silicon sealant layer and a first O-ring disposed between the motor case and the nozzle assembly, thereby preventing the generation of air passage and air pocket in a silicon sealant layer coated over the assembled portions of the rocket propulsion motor. The silicon sealant is prepared by mixing a silicon sealant material with a setting agent. The mixing is also carried out under vacuum, so as to prevent the sealant from containing air. For venting air from a space defined the silicon sealant layer and the first O-ring under vacuum, a plurality of spacing bolts are used which serve to space the motor case and the nozzle assembly at a predetermined distance.