摘要:
The present invention relates to a reaction wheel assembly and fiber optic gyro device. The device includes a reaction wheel assembly having a reaction wheel assembly housing, a fiber optic gyro coil integrated with the reaction wheel assembly housing, and a fiber optic gyro electronics integrated with the reaction wheel assembly housing. The fiber optic gyro coil may be wound around the reaction wheel assembly housing. The gyro coil may also be located within the reaction wheel assembly housing.
摘要:
A plurality of sensors provide spacecraft attitude signals to reaction wheel assemblies which provide converted signals to a flight controller that controls the reaction wheel assemblies. The reaction wheel assemblies include a secondary power supply to power the sensors, and power can be regenerated from the reaction wheels. A microcomputer in the reaction wheel assemblies can control the reaction wheel assemblies in place of the flight controller.
摘要:
A vehicle control system is provided that includes a slat having an axis, a plurality of microwheels disposed on the slat, each microwheel having a first stator wafer, a second stator wafer, and a rotor wafer disposed therebetween, the first and second stator wafers configured to spin the rotor wafer, and an actuator coupled to the slat and configured to at least partially rotate the slat about the axis.
摘要:
An spacecraft control system is provided that includes a tube and a plurality of microwheels. The plurality of microwheels is disposed within the tube. Each microwheel has a first stator wafer, a second stator wafer, and a rotor wafer disposed therebetween. The first and second stator wafers are configured to spin the rotor wafer.
摘要:
A vibration isolator which may be constructed in the form of a cube for use in retrofitting a device which is subjected to unwanted vibration present in an attached member which utilizes an active vibration isolator and a passive isolator in series between the members and which may include an overload protection device in the form of a deformable member in parallel with the isolators.
摘要:
A fiber optic connector for establishing an optical connection with an optical fiber embedded within a composite structure is provided. The fiber optic connector includes a first lens element, such as a metal sheathed graded index (GRIN) lens, that is attached to the portion of the edge surface of the composite structure to which the optical fiber extends. The fiber optic connector also includes an alignment tube and a second optical fiber, external to the composite structure, having an end portion disposed within one end of the alignment tube. By sliding the other end of the alignment tube over the first lens element, optical communication is established between the first optical fiber embedded within the composite structure and the second optical fiber external to the composite structure. The fiber optic connector also typically includes a ferrule mounted upon the end portion of the second optical fiber and inserted at least partially into one end of the alignment tube. In order to effectively couple the optical signals between the embedded optical fiber and the external optical fiber, the fiber optic connector also generally includes a second lens element, such as a second GRIN lens, disposed within a medial portion of the alignment tube for collimating the optical signals.
摘要:
A remote Information Management Network routing system located either at an independent hosting facility or at a central station monitoring facility that receives event and alert information from a security or premise monitoring system and sequentially transmits interactive notifications about the event and alert information to wired and wireless devices specified in a user profile within the Information Management Network.
摘要:
A method is provided for fabricating a composite structure having an externally accessible electrical device embedded therein. At least one supporting ply is initially provided that has first and second depressions. An electrical device having at least one electrical lead is disposed in the first depression and a connector tow having at least one tube with opposed first and second ends is disposed in the second depression. The first end of the tube of the connector tow is electrically connected to the electrical lead. Thereafter, at least one additional ply is stacked on the supporting ply such that the electrical device and the connector tow are embedded. The stacked plies can then be consolidated to form an integral laminate structure. Following the consolidation, the second end of the tube of the connector tow can be accessed through the edge surface of the laminate structure to thereby define an externally accessible electrical port for receiving a corresponding connector. As such, electrical contact can be established with the embedded electrical device via the tube and the electrical lead. By establishing electrical contact with the electrical device during the fabrication process, the operation and therefore the health of the embedded electrical device can thereafter be monitored.
摘要:
A composite structure having an externally accessible electrical device embedded therein includes at least one tube disposed within the composite structure and extending from a first end which is electrically connected to an electrical lead of the electrical device to a second end which opens through the edge surface of the composite structure to thereby define an externally accessible electrical port. By plugging a corresponding connector into the electrical port, electrical contact can be established via the electrical lead with the electrical device embedded within the composite structure. By extending through the edge surface of the composite structure, the electrical ports can be accessed during the fabrication of the composite structure such that the operations of the embedded electrical device can be monitored. In addition, the edge surface of the resulting composite structure can be machined or cut so as to render the respective second ends of any embedded tubes flush with the machined edge of the composite structure to more precisely define the respective electrical ports.
摘要:
An inertial reference system for a spacecraft includes an attitude control assembly and a plurality of force sensors. The attitude control assembly is coupled to a spacecraft body at a plurality of attachment points and at least one of the plurality of force sensors is integrated at each of the attachment points. In one embodiment, the force sensors are piezoelectric transducers. In another embodiment, the control assembly is coupled to the spacecraft body at four attachment points. In yet another embodiment, each of the force sensors is preloaded by a bolt that attaches the attitude control assembly to the spacecraft body.