A power take-off (PTO) system includes a spur pinion on a shaft, used to turn a sector face gear that is coupled to a surface to be turned, such as a jet vane in a rocket nozzle. These may be parts of a thrust vectoring system, with the PTO system used to connect to a control surface actuator for a control surface such as a fin. The mechanical coupling between the fin and the jet vane may enable steering of a flight vehicle such as a missile at both low speeds and high speeds, with the thrust vectoring by the jet vane effective at low airspeeds and the control surface movement used for steering at high airspeeds. The PTO system may be backward compatible with prior systems, while allowing a more direct connection between the control surface actuator and the thrust vectoring system, with a reduced number of parts.

A power take-off (PTO) system includes a spur pinion on a shaft, used to turn a sector face gear that is coupled to a surface to be turned, such as a jet vane in a rocket nozzle. These may be parts of a thrust vectoring system, with the PTO system used to connect to a control surface actuator for a control surface such as a fin. The mechanical coupling between the fin and the jet vane may enable steering of a flight vehicle such as a missile at both low speeds and high speeds, with the thrust vectoring by the jet vane effective at low airspeeds and the control surface movement used for steering at high airspeeds. The PTO system may be backward compatible with prior systems, while allowing a more direct connection between the control surface actuator and the thrust vectoring system, with a reduced number of parts.

A mechanism for steering and maneuvering an airborne body comprised of at least one actuator comprising an electric motor having a first axis, and a gear transmission for transmitting power from the electric motor to an angular motion axis of a fin that has an angular motion around a second axis to steer the airborne body, and wherein the mechanism is characterized in that the gear transmission is a beveloid gear type of transmission, an airborne body that comprised the mechanism, and a method for achieving the desired flight path of an airborne body implementing the mechanism.

A device is configured for deflecting a stream of particles for a projectile guided by a link wire, the projectile having a fuselage and an engine capable of producing a propulsive jet containing the stream of particles. The device includes a device support including an inner surface configured to attach the device support to the fuselage of the projectile, and a deflector strip assuming at least an unfolded position in which the deflector strip forms an angle with the device support in order to deflect the stream of particles.

A missile includes a rocket motor that has a flow deflector in an expansion region of the rocket motor's nozzle. The flow deflector diverts flow of combustion products away from a safe region that is aft of the missile. The safe region protects an operator of a launcher used to fire the missile, such as a shoulder-fired launcher, from harm caused by the combustion products. The flow deflector may be small enough such that it does not significantly adversely affect the performance of the rocket motor. The presence of the flow diverter may allow for the rocket motor to be started sooner in the flight of the missile, or at a distance closer to the operator, while still keeping the operator safe. The flow deflector and supporting structure, such as struts, may be additively manufactured with at least an aft part of the nozzle, as a continuous single-piece part.

A missile includes a rocket motor that has a flow deflector in an expansion region of the rocket motor's nozzle. The flow deflector diverts flow of combustion products away from a safe region that is aft of the missile. The safe region protects an operator of a launcher used to fire the missile, such as a shoulder-fired launcher, from harm caused by the combustion products. The flow deflector may be small enough such that it does not significantly adversely affect the performance of the rocket motor. The presence of the flow diverter may allow for the rocket motor to be started sooner in the flight of the missile, or at a distance closer to the operator, while still keeping the operator safe. The flow deflector and supporting structure, such as struts, may be additively manufactured with at least an aft part of the nozzle, as a continuous single-piece part.

A device is configured for deflecting a stream of particles for a projectile guided by a link wire, the projectile having a fuselage and an engine capable of producing a propulsive jet containing the stream of particles. The device includes a device support including an inner surface configured to attach the device support to the fuselage of the projectile, and a deflector strip assuming at least an unfolded position in which the deflector strip forms an angle with the device support in order to deflect the stream of particles.

A method of thrust vectoring a missile utilizing jet tabs is presented. Jet tabs are used to create lateral control moments on a missile by rotating tabs into the rocket exhaust plume and changing the thrust deflection angle. The method includes simultaneously rolling the missile during the thrust vector maneuver in order to reduce the maximum tab exposure to the rocket plume. The method enables aggressive pitchover maneuvers while reducing the risk of tab failure due to excessive exposure.

A first jet tab and a second jet tab are symmetrically arranged with respect to a symmetry plane and have a symmetrical shape with respect to the symmetry plane, and are symmetrically driven with respect to the symmetry plane by a driving section. A distance between a tip of the first jet tab and a first rotation axis is larger than a distance between the first rotation axis and the symmetry plane. A distance between a tip section of the second jet tab and a second rotation axis is larger than a distance between the second rotation axis and the symmetry plane.

The thrust vectoring apparatus has a nozzle, a jet tab arranged behind the nozzle, a rotation shaft 30 connected to the jet tab, and a gas seal member arranged on an outer circumferential surface of the rotation shaft. The rotation shaft is connected to the jet tab, and has the protrusion in the redial direction out of the rotation shaft on the rear side of the gas seal member. The protrusion restrains that the combustion gas exhausted from the nozzle flows toward the gas seal member.