Abstract: Automatic monitoring of a cooling system and providing warnings of abnormal operation. The cooling system includes one or more air handling units to provide air flow cooling to a plurality of racks of computer equipment, each rack having a display module for indicating an inlet air temperature of the rack and an alert message. The monitoring includes: receiving, from a plurality of sensors, measurements of: an air flow temperature provided to each of the racks; and an air pressure, temperature and relative humidity difference across, and an electrical power consumption of, the air handling unit(s); updating a computer model of the cooling system with the received measurements; and for each rack, if a level or a rate of change of the inlet air temperature is outside of a preset range for the rack, transmitting an alert message to the display module to indicate a cause based on the computer model.

Abstract: Automatic monitoring of a cooling system and providing warnings of abnormal operation. The cooling system includes one or more air handling units to provide air flow cooling to a plurality of racks of computer equipment, each rack having a display module for indicating an inlet air temperature of the rack and an alert message. The monitoring includes: receiving, from a plurality of sensors, measurements of: an air flow temperature provided to each of the racks; and an air pressure, temperature and relative humidity difference across, and an electrical power consumption of, the air handling unit(s); updating a computer model of the cooling system with the received measurements; and for each rack, if a level or a rate of change of the inlet air temperature is outside of a preset range for the rack, transmitting an alert message to the display module to indicate a cause based on the computer model.

Abstract: A stability system for a vehicle moving through a fluid includes stabilizers each having a drive surface that follows the position of the fluid stream perceived by the vehicle. The movement of the drive surface positions control surfaces of the stabilizers, which are coupled to the drive surfaces by mechanical linkages. Lift forces on the drive surfaces provide the force that is used in positioning the control surfaces. The deflection of the control surfaces provides a force on the vehicle that affects stability of the vehicle, for instance in making an inherently unstable vehicle more stable. The stability system may work completely passively, without any active control, and without the need for power to operate it.

Abstract: A stability system for a vehicle moving through a fluid includes stabilizers each having a drive surface that follows the position of the fluid stream perceived by the vehicle. The movement of the drive surface positions control surfaces of the stabilizers, which are coupled to the drive surfaces by mechanical linkages. Lift forces on the drive surfaces provide the force that is used in positioning the control surfaces. The deflection of the control surfaces provides a force on the vehicle that affects stability of the vehicle, for instance in making an inherently unstable vehicle more stable. The stability system may work completely passively, without any active control, and without the need for power to operate it.

Abstract: A wind tunnel testing technique or method involves using feedback to position control surfaces of a model so that there is substantially no moment on the model for its given orientation to the airstream. The model is mounted on a sting that allows change in orientation of the model relative to the airstream. A balance is used to provide data regarding the forces and/or moments on the model. This data on forces and/or moments is used in one or more feedback loops to position the control surfaces of the model so that there are substantially no moments on the model. This may be done automatically, with a controller automatically controlling the position of the control surfaces to zero out the moments on the model. The use of the method may allow faster determination of model characteristics, such as determination of the trim envelope of the model.

Abstract: A wind tunnel testing technique or method involves using feedback to position control surfaces of a model so that there is substantially no moment on the model for its given orientation to the airstream. The model is mounted on a sting that allows change in orientation of the model relative to the airstream. A balance is used to provide data regarding the forces and/or moments on the model. This data on forces and/or moments is used in one or more feedback loops to position the control surfaces of the model so that there are substantially no moments on the model. This may be done automatically, with a controller automatically controlling the position of the control surfaces to zero out the moments on the model. The use of the method may allow faster determination of model characteristics, such as determination of the trim envelope of the model.

Abstract: An air-launched aircraft includes deployable wings, elevons, and vertical fins that deploy from a fuselage during flight. The aircraft may include a control system for operating the elevons, a communication system, and batteries for powering the systems. In addition, the aircraft may include a payload module that mates with an interface in the fuselage. The payload module may include any of a variety of payloads, including cameras, sensors, and/or radar emitters. The aircraft may be powered or unpowered, and may be very small, for example, less than on the order of 10 kg (22 pounds). The aircraft may be employed at a low cost for any of a wide variety of functions, such as surveillance, or as a decoy. The deployable surfaces of the aircraft may be configured to deploy in a pre-determined order, allowing the aircraft automatically to enter controlled flight after being launched in a tumbling mode.

Abstract: An air-launched aircraft includes deployable wings, elevons, and vertical fins that deploy from a fuselage during flight. The aircraft may include a control system for operating the elevons, a communication system, and batteries for powering the systems. In addition, the aircraft may include a payload module that mates with an interface in the fuselage. The payload module may include any of a variety of payloads, including cameras, sensors, and/or radar emitters. The aircraft may be powered or unpowered, and may be very small, for example, less than on the order of 10 kg (22 pounds). The aircraft may be employed at a low cost for any of a wide variety of functions, such as surveillance, or as a decoy. The deployable surfaces of the aircraft may be configured to deploy in a pre-determined order, allowing the aircraft automatically to enter controlled flight after being launched in a tumbling mode.

Abstract: A testing apparatus designed to check the completion of a command issued earlier in a multiprocessing system having a plurality of nodes. During an initialization phase, each command has been identified by a handle and a record containing the task to be performed asynchronously had been established. When a request for checking the completion of a command is issued, the pre-established record is simply checked for location of last task executed and completed. If the last or most current task is not the last task before the completion of the total command, the user application can choose to either continue the operation of command processing or permanently or temporarily abandon it.

Abstract: A method for testing the completion of a command issued earlier in a multiprocessing system having a plurality of nodes. During an initialization phase, each command has been identified by a handle and a record containing the task to be performed asynchronously had been established. When a request for checking the completion of a command is issued, the pre-established record is simply checked for location of last task executed and completed. If the last or most current task is not the last task before the completion of the total command, the user application can choose to either continue the operation of command processing or permanently or temporarily abandon it.

Abstract: A method and apparatus for distributing data in a multiprocessing system having a plurality of nodes. Each node has a user application for issuing a blocking or a non-blocking command. A request handle identifies each non-blocking command, while being set to a null value when in blocking mode.For each requested command issued by any of the user applications, a report is generated comprising of data structures, for recording the sequence of functions to be executed asynchronously given a non-blocking command. Blocking commands are processed synchronously. Once the report is generated the sequence of functions recorded in the report are executed in the sequence presented in the report. However, whenever an internal dependency is encountered the control is returned to user application until the internal dependency is resolved. Upon completion of requested command, the user application is notified.

Abstract: In a multi-processor parallel processing computer environment different communication modes are available for performing an information distribution operation (e.g., a broadcast) between processors. The technique comprises automatically selecting an optimal communications mode at operation run-time. The selection decision utilizes hardware parameters of the system (e.g., communication speed between processors) and run-time parameters (e.g., number of nodes to broadcast a message to). The communication mode selection decision seeks to optimize factors such as time required to execute or work space requirements of the distribution operation.