Abstract:
Data is remotely collected from a plurality of fasteners in response to a query signal wirelessly transmitted by a reader. Each of the fasteners includes a sensor for measuring a parameter related to the stress on the fastener. A device adapted to be attached to each of the fasteners receives the query signal, activates the sensor to measure the parameter and wirelessly transmits the data including the parameter to the reader.
Abstract:
Systems capable of acquiring polarimetry data using a single camera with or without a polarizing filter. When a polarizing filter is used, the data acquisition method comprises: (1) maneuvering the aircraft (or other vehicle) to orient the polarizing filter (and camera) in various directions when images are captured, (2) registering the various images to each other, and (3) computing polarimetry values (such as the Stokes parameters) for points of interest in the images. When a polarizing filter is not used, the data acquisition method comprises maneuvering the aircraft (or other vehicle) to orient the camera in various directions when images are captured and then performing the same operations (2) and (3). These methods measure the amount of polarization in a given scene by taking multiple camera images at different angles.
Abstract:
A deployable vortex generator attached to a lifting surface includes a vane moveable relative to the lifting surface. The vane moves from a deployed position to a retracted position in response to a change in ambient conditions. In the deployed position, the vane acts on the air flow to create vortices. In the retracted position, the vane is closely aligned with the free stream velocity.
Abstract:
A method and apparatus for controlling an electric motor. Power is transmitted to windings of the electric motor by wireless magnetic coupling between transmission coils and the windings.
Abstract:
An apparatus for directing thermal infrared energy toward or away from a target is disclosed. The apparatus comprises a covering having a plurality of retroreflective elements. The plurality of retroreflective elements are configured to retroreflect electromagnetic beams primarily at thermal infrared wavelengths, receive the electromagnetic beams from the target along beam reception paths, and reflect the electromagnetic beams back toward the target along beam reflection paths. The beam reflection paths have substantially the same elevation angle and/or azimuth angle as their respective beam reception paths.
Abstract:
Systems and methods for detection of clear air turbulence are provided. One system includes an image capture device suitable to capture one or more images of an optical phenomenon caused by non-horizontally oriented ice crystals. The system also includes a computer processor configured to receive the one or more images from the image capture device, analyze the one or more images by comparing one or more characteristics of the one or more images to one or more threshold values, and determine based on the comparing, an occurrence of clear air turbulence.
Abstract:
A method and apparatus for identifying a position of a surface on an aircraft. Image data for an image of the surface on the aircraft is received. The image data is processed to determine whether the position of the surface on the aircraft is a desired position. A surface position identification report comprising information identifying whether the position of the surface on the aircraft is the desired position is generated.
Abstract:
An enhanced control system for an unmanned aerial vehicle adds constraints to the process of choosing a flight path in the event of an in-flight contingency, such as engine out or an encounter with jamming, which forces a diversion or unplanned landing. The constraints are: (1) ensure communications are available when needed during contingency operations; and (2) ensure signals from a global positioning system (or other navigation system) are available when needed during contingency operations.
Abstract:
Systems and methods for transferring electric power to an aircraft during flight. Power transfer to the receiver aircraft is effected by means of a donor aircraft using a wired electrical connection. The method for transferring electric power includes: establishing an electrical connection between a receiver aircraft and a donor aircraft during flight; and transferring electric power from the donor aircraft to the receiver aircraft via the electrical connection. In one embodiment, electric power is transferred by way of a power cable deployed by the donor aircraft, a drogue attached to a trailing end of the power cable, and a probe mounted to the fuselage of the receiver aircraft, The probe and drogue are configured to form an electrical connection when fully engaged.
Abstract:
An animal-entry protection apparatus and related methods for protecting protected areas from animal entry are described. The animal-entry protection apparatus includes an eye-safe laser and a computing device. The animal-entry protection apparatus determines whether an animal has entered into a protected area. After determining that the animal has entered into the protected area, the animal-entry protection apparatus determines a location of the animal within the protected area and activates the eye-safe laser to emit a pulsed laser beam toward the location of the animal. The pulsed laser beam includes laser pulses having a laser-pulse rate that is between a first laser-pulse rate associated with a flicker-fusion frequency of a human eye and a second laser-pulse rate associated with a flicker-fusion frequency of an animal eye.