The Aerospace Corporation | Date: 2015-03-06
The invention relates to a LED strip lighting device for a cabin of a passenger aircraft, the device comprising at least one LED strip, comprising a plurality of N independently controllable LED segments (S), wherein each LED segment (S) comprises at least four LED selected from red, green, blue, ice blue, warm white and cold white or another type of LED; a plurality of M driver units, wherein each LED section (S) is connected to a driver unit for providing a control signal to the respective LED section (S); and a bus system connecting all M driver units. The device further comprises a micro controller connected to the bus system for providing control signals for each driver unit, such that each LED segment (S) emits light in intensity and color according to a predetermined illumination pattern.
The Aerospace Corporation | Date: 2015-08-13
Under one aspect of the present invention, a structure for providing galvanically isolated communication between first and second spacecraft electronic components includes a semi-insulating substrate; an input port disposed on the substrate and configured to receive a signal from the first spacecraft electronic component; a coupling structure disposed on the substrate, coupled to the input port so as to receive the signal, and configured to provide an isolated replica of the received signal as an output; a signal conditioner disposed on the substrate, coupled to the coupling structure so as to receive the isolated replica of the received signal, and configured to condition the isolated replica; and an output port disposed on the substrate, coupled to the signal conditioner so as to receive the conditioned isolated replica, and configured to provide the conditioned isolated replica to the second spacecraft electronic component.
The Aerospace Corporation | Date: 2015-10-20
Systems and methods are provided for processing a time-domain signal in rectangular coordinates. The signal can include a low power desired signal and a high power, approximately constant envelope interference signal that spectrally overlaps the desired signal. A rectangular to polar converter can obtain magnitude and phase of the time-domain signal in polar coordinates. An interference estimator can estimate a magnitude of the interference signal based on the magnitude of the time-domain signal in polar coordinates. A subtractor can obtain a difference magnitude in polar coordinates based on the magnitude of the time-domain signal and the estimated magnitude of the interference signal in polar coordinates. A polar to rectangular converter can obtain the desired signal with reduced power of the interference signal based on the difference magnitude and phase of the time-domain signal in polar coordinates.
The Aerospace Corporation | Date: 2015-05-22
A modular aeroponic growing column has an elongated first body, a fluid receiving cap, a fluid draining base cap, and a plurality of growing receptacles. The elongated first body includes a fluid receiving end, an opposite fluid draining end, an interior receiving space extending between the fluid receiving end and the fluid draining end, and a plurality of growing receptacle receiving openings positioned on the first body. The plurality of growing receptacles is positioned in the growing receptacle receiving openings.
The Aerospace Corporation | Date: 2014-03-14
Side emitting optical apparatuses and methods having an optical grade silicone component. Optionally, the optical grade silicone includes a plurality of diffusive side areas that are configured to disrupt the travel path of a light ray traversing along a longitudinal axis of the optical element to re-direct the light ray out of the side of the optical element. The optical apparatus is configured such that the light is emitted more uniformly along a length of the optical apparatus.