Abstract:
The present invention relates to a new and distinct cultivar of raspberry plant named ‘Driscoll Estrella’. The new cultivar is distinguished from other raspberry cultivars by its yellow fruit color, fruit firmness, consistent fruit structure and high yield. The new cultivar is distinguished from its pollen parent by producing a higher yield of larger, firmer fruit with a brighter yellow color.
Abstract:
The present invention relates to a new and distinct cultivar of raspberry plant named ‘Driscoll Estrella’. The new cultivar is distinguished from other raspberry cultivars by its yellow fruit color, fruit firmness, consistent fruit structure and high yield. The new cultivar is distinguished from its pollen parent by producing a higher yield of larger, firmer fruit with a brighter yellow color.
Abstract:
Methods and systems are provided for reorienting an agile vehicle, such as a satellite or spacecraft, using a control moment gyroscope (CMG) array. The CMG array comprises a plurality of CMGs onboard the agile vehicle. A method comprises obtaining an input torque command for reorienting the vehicle using the CMG array and, when the angular momentum of the CMG array violates or is approaching a momentum boundary criterion, decreasing the input torque command in the kinetic momentum direction, resulting in a modified torque command, and operating the CMG array using the modified torque command.
Abstract:
Methods and systems are provided for reducing angular velocity of a vehicle using a gyroscope array. A method comprises dithering a gyroscope of the gyroscope array, obtaining current through a gimbal motor of the gyroscope while dithering the gyroscope, determining a gimbal rate command to reduce angular velocity of the vehicle based on the current through the gimbal motor obtained while dithering the gyroscope, and operating the gimbal motor of the gyroscope based on the gimbal rate command.
Abstract:
Methods and systems are provided for controlling attitude of a vehicle using a reaction wheel onboard the vehicle. One exemplary method involves receiving a torque command for adjusting the attitude of the vehicle using the reaction wheel, determining a phase error of the reaction wheel based at least in part on the torque command, and determining a motor torque command for the reaction wheel based on the phase error. The motor torque command is provided to an electric motor of the reaction wheel to apply a corresponding torque to the rotor of the reaction wheel. The relationship between the magnitude of the motor torque command and the magnitude of the phase error is nonlinear. In exemplary embodiments, the magnitude of the motor torque command exceeds the stiction torque, at least instantaneously, when the reaction wheel has fallen behind an expected position by more than a threshold amount.
Abstract:
Methods and systems are provided for reducing angular velocity of a vehicle using a gyroscope array. A method comprises dithering a gyroscope of the gyroscope array, obtaining current through a gimbal motor of the gyroscope while dithering the gyroscope, determining a gimbal rate command to reduce angular velocity of the vehicle based on the current through the gimbal motor obtained while dithering the gyroscope, and operating the gimbal motor of the gyroscope based on the gimbal rate command.
Abstract:
A single pin initiator including a header body forming an eyelet, a header lip surface and a connector shell. An initiator canister is connected to the header body and defines a first storage chamber, wherein a supply of initiation charge material is contained. A pin is positioned within the eyelet, with a pin head portion extending into the first storage chamber defined by the initiator canister. Electrical communication between the pin and the header body is provided by a bridgewire connected to the header body and preferably contacting a flat surface of the pin head portion. A supply of initiation pyrotechnic material is disposed on at least a portion of the bridgewire, and is in initiation communication with the supply of initiation charge material. Also disclosed is a passive restraint system assembly including the single pin initiator assembly of the present invention. The passive restraint system assembly includes a gas generant canister positioned over the initiator canister and securely connected to the header body, which defines a second storage chamber containing a supply of gas generant material.
Abstract:
An airfoil member (14) includes a geometric morphing device (18). The geometric morphing device (18) has an inflatable member (30). The inflatable member (30) has an exterior wall (32) and multiple inflated states. The exterior wall (32) includes a layer with one or more fibers embedded therein. The exterior wall (32) controls size, shape, and expansion ability of the geometric morphing device (18).
Abstract:
Consistent user experience of playlist capabilities, despite differences in available resources and on-line connectivity, is provided. Data embedded in a playback device compensates for lack of connectivity. For compactness, embedded data can be targeted to geographic region(s) by selecting metadata for recordings containing audio using statistics on playback of the recordings in many geographic regions. The statistics and corresponding metadata are segregated by the geographic regions. Then a portion of the corresponding metadata is selected for at least one of the geographic regions based on the statistics. By using statistics that indicate popularity of recordings within geographic regions based on frequency of playback or requests for information about a recording when it is played, the portion of the corresponding metadata that is selected can be tailored for individual geographic regions. To ensure that subregions and genres are not totally excluded, the portion selected may not be solely based on popularity.