Abstract: The disclosure provides cleaning compositions including at least one acid, at least one carbonate salt, at least one gum, at least one acid salt, and, optionally, at least one chelating agent. When exposed to an aqueous medium, the cleaning compositions may produce carbon dioxide. These cleaning compositions find use, for example, in cleaning textile fibers, such as carpets, drapery, upholstery, and the like. The disclosure provides methods of cleaning soiled textile fibers with a cleaning composition including gum arabic, at least one acid, and at least one carbonate salt.

Abstract: An electronic switch for switching between signal outputs comprises a 6-way symmetric hybrid ring combiner. Each port within the 6-way symmetric hybrid ring combiner is positioned at ?/4 wavelength increments around a circumference of the 6-way symmetric hybrid ring combiner.

Abstract: A radio frequency (RF) communications system may include an RF transmitter having multicarrier transmitter circuitry that transmits frequency bands over a frequency range. A controller may selectively transmit real information over at least one of the frequency bands and selectively transmits fake information within the frequency range. The controller's operation is based on embedded machine learning model and real-time effectiveness feedback from built-in spectral analyzer. An RF receiver receives the real information from the RF transmitter.

Abstract: A system for testing an optical surface, the system comprising a non-coherent light source, a detector, a test plate positioned between the non-coherent light source and the optical surface, the test plate separated from the optical surface by a gap, and a processor. The processer is configured to cause the non-coherent light source to illuminate the test plate and optical surface with non-coherent light, control the detector to capture an interferogram produced by interference between light reflected from the test plate and light reflected from the optical surface, and perform quantitative analysis on the interferogram to characterize aberrations in the optical surface.

Abstract: A wireless engine monitoring system for an aircraft engine includes a housing and wireless transceiver that receives engine data, including engine data relating to environmental engine emissions. A processor processes the engine data and generates an alarm report when the environmental engine emissions exceed a threshold.

Abstract: A wireless engine monitoring system for an aircraft engine includes a housing and wireless transceiver that receives engine data, including engine data relating to environmental engine emissions. A processor processes the engine data and generates an alarm report when the environmental engine emissions exceed a threshold.

Abstract: A heavy-lift UAV frame includes a central frame portion having a symmetrical shape and forming a pocket area for receiving an avionics package. Top and bottom plates are secured to the central frame portion and include four corner members that extend diagonally outward therefrom. A plurality of boom hinges are interposed between each of the corner members and an elongated boom arm. Each of the boom hinges pivot the boom arms between an extended position for flight and a retracted position for storage and transport. Each boom arm and hinge combination includes a complementary dimension to one side of the central frame portion to position a boom arm parallel thereto when in the retracted position.

Abstract: Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proxi-mate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.

Abstract: Antenna system includes a base structure and a multiplicity of vertebrae arranged in a stack to define a spine. The spine has an elongated length which extends from a base end to a tip end. A compression applicator is configured to apply an elastic compression force on the stack in a direction along the elongated length from the tip end to the base end. Vertebra interfaces associated with each of the adjacent pairs of the vertebrae are configured to facilitate a variable deviation in an angular alignment of a vertebra axis of each vertebra relative to an adjacent one of the vertebra contained in the stack.

Abstract: An unmanned undersea vehicle including a magnetic coupler drive. The magnetic coupler drive is incorporated into a hull section, such as a tail section of the unmanned undersea vehicle. The magnetic coupler drive includes a motor shaft magnet, a titanium housing disposed about the motor shaft magnet, and a propeller shaft magnet magnetically coupled to the motor shaft magnet, but physically separated from the propeller shaft magnet by the titanium housing.

Abstract: A seismic modeling system is provided which may include a seismic model data storage device, and a processor cooperating with the seismic model data storage device to identify an obstruction within a seismic model spatial domain data set having a lateral boundary, and define a suspect area including spatial domain data within the lateral boundary and directly below the obstruction. The processor may further inpaint the suspect area in the seismic model spatial domain data set based upon an exemplar inpainting algorithm.

Abstract: The disclosure provides cleaning compositions including at least one acid, at least one carbonate salt, at least one gum, at least one acid salt, and, optionally, at least one chelating agent. When exposed to an aqueous medium, the cleaning compositions may produce carbon dioxide. These cleaning compositions find use, for example, in cleaning textile fibers, such as carpets, drapery, upholstery, and the like. The disclosure provides methods of cleaning soiled textile fibers with a cleaning composition including gum arabic, at least one acid, and at least one carbonate salt.

Abstract: A stain and odor treatment composition and method of use is provided. The composition is a powdered pre-application composition for treatment of odor and/or stains in textiles. The composition includes a powdered oxidizing agent, a powdered buffering agent, and an odor-modifying agent. In one embodiment the oxidizing agent may be at least 50 weight percent of the composition. In another embodiment the buffering agent may be between about 10 weight percent and about 30 weight percent of the composition. In one embodiment, the method includes providing a powdered buffering agent, combining an odor-modifying agent with the powdered buffering agent, and mixing the odor-modifying agent with the powdered buffering agent. The method of use may include the steps of combining the powdered pre-application composition with water, mixing the powdered pre-application composition with the water to form a cleaning solution, and applying the cleaning solution to a textile.

Abstract: A cross-domain information transfer system includes a key distribution center that generates private encryption keys and a signature key pair as a secret signing and secret verifying key for an attribute associated with a given domain. A sender device generates ciphertext from plaintext based upon the private encryption key, appends an attribute for a given domain to the ciphertext, generates ciphertext with a concealed attribute based upon the secret signing key and broadcasts the ciphertext with the concealed attribute. Domain gateway devices each receive a respective secret verifying key for an associated attribute, receive the ciphertext with the concealed attribute from the untrusted network, and use the secret verifying key to determine if the concealed attribute matches the attribute associated with the domain gateway device, and, when so, pass the ciphertext to at least one receiver device coupled with the domain gateway device.

Abstract: An angle of arrival system can be self-calibrating. The angle of arrival system can continuously estimate imperfections caused by the analog RF components and dynamically apply corrections based on these estimates. As a result, an angle of arrival system can employ inexpensive components, will not require factory calibration, but can still perform geolocation with high precision.

Abstract: An image processing system may include a processor and an associated memory configured to store training data that includes training geospatial images. The processor may be configured to operate a training model to identify a given feature from each of the training geospatial images, and to iteratively apply a bias factor to a loss function based upon a number of incorrectly identified pixels for the given feature. The bias factor may be reduced with each iteration.

Abstract: A modified nightvision system. The nightvision system includes an intensifier module configured to intensify received light input into the intensifier module. The intensifier module has an input side configured to receive photons of the received light and an output side configured to output intensified light resulting from the received light. The night vision system includes an added display unit proximate the output side of the intensifier module, the display unit configured to output graphical content. The night vision system includes an added beam combiner optically coupled to the display unit and the output side of the intensifier module. The beam combiner is configured to combine the intensified light and graphical content. The night vision system includes an eyepiece optically coupled to the beam combiner. The eyepiece is configured to receive the combined intensified light and graphical content and to provide the combined intensified light and graphical content to a user.

Abstract: A communications system may include a transmitter having spreading stages configured to spread a common modulated baseband input data stream based upon respective coefficient sequences; a plurality of upconverters, each having a different frequency; and an RF output stage that generates an RF output signal. A receiver may include an RF input stage that receives an RF input signal, a plurality of downconverters, a plurality of despreading stages, and a demodulator coupled to the despreading stages.