Abstract:
A submersible vehicle object ejection control system stores a plurality of pump speed command profiles. Each pump speed command profile is based on vehicle depth, vehicle speed, type of object being ejected, maximum noise emission magnitude during object ejection, and object exit velocity. The system also receives data representative of current vehicle depth, current vehicle speed, and the type of object being ejected. In response to these data, the system retrieves one of the plurality of pump speed command profiles and supplies pump speed commands representative of the retrieved pump speed command profile.
Abstract:
A flight control surface actuator assembly includes a pair of flight control surface actuators and a pivot arm. One of the flight control surface actuators is coupled to a flight control surface and a static airframe structure, the other flight control surface actuator is coupled to the flight control surface and the pivot arm. The pivot arm coupled to the static airframe structure and is configured to pivot relative to the second flight control surface actuator and the static airframe structure.
Abstract:
An electric flight control surface actuation system is implemented using a low level control section and a high power section. The low level control section is disposed within an electronics bay within the aircraft, and is in operable communication with one or more flight computers via a communication bus. The flight computers supply flight control surface position commands to the low level control section, which in turn transmits actuator commands to the high power section via a plurality of redundant communication links. The high power section is disposed remotely from the low level control section and, in addition to being in operable communication with the low level control section, is coupled to an aircraft power bus and to each of the actuators. The high power section receives the actuator position commands transmitted from the low level control section and, in response, selectively energizes the actuators from the aircraft power bus.
Abstract:
A system and method for removing energy from the rotating group in an energy storage flywheel system during flywheel system testing includes one or more sensors is operable to sense operational parameters of the energy storage flywheel and to supply a sensor signals representative thereof. A primary control circuit is coupled to receive the sensor signals and, in response thereto, selectively supplies a primary brake activation signal to a brake. The brake, in response to the brake activation signal, selectively supplies a brake force to the energy storage flywheel.
Abstract:
A communication system for an unmanned underwater vehicle (UUV) is disposed at least partially within a submerged docking station. The communication system receives communication requests from a remote station, and transmits requested data to and from the remote station. The data transmitted from the remote station may be further transmitted to a submerged UUV, either via a data port or wirelessly, depending on whether the UUV is docked in the docking station.
Abstract:
A device for detecting strain levels imposed on a circuit board includes an apparatus mounted on the circuit board, an amplifier for detecting a change in the impedance of the apparatus and generating an output signal representing the change in the impedance of the apparatus, and a signal conditioner for receiving the output signal and setting the gain of the amplifier.
Abstract:
An auxiliary bearing assembly for selectively engaging a shaft, preferably in an energy storage flywheel system, is configured to include a vibration damping seal, and an axial preload spring. The vibration damping seal damps out vibrations from the rotating group, following engagement of the auxiliary bearing assembly, while the rotating group is spinning down. The axial preload spring absorbs any differential thermal expansion or contraction that may occur between components.