Boeing

A method controls taxiing of an aircraft. A first laser beam and a second laser beam are emitted from the aircraft using a wavelength configuration. A first backscatter light and a second backscatter light are received at the aircraft in response to emitting the first laser beam and the second laser beam. First backscatter data is generated using the first backscatter light. Second backscatter data is generated using the second backscatter light. A first signal to noise ratio is determined using the first backscatter data. A second signal to noise ratio is determined using the second backscatter data. The wavelength configuration is controlled for the first laser beam and the second laser beam emitted by the lidar system using the first signal to noise ratio and the second signal to noise ratio. A taxiing operation is performed for the aircraft using the first backscatter data and the second backscatter data.

A system includes a toilet, and an energy harvester coupled to the toilet. The energy harvester is configured to convert vacuum force, which flushes contents from the toilet, into electrical energy. The energy harvester is further configured to provide the electrical energy to one or more components.

Methods and apparatus for multi-layered integrity validation of vision-based vehicle guidance are disclosed. A disclosed example system includes an image sensor carried by a vehicle, the image sensor to identify light sources of a ground-based pattern display, wherein a spatial arrangement of varying distances between the light sources defines a light pattern array, and at least one processor circuitry to perform a multi-layer integrity validation corresponding to the light pattern array based on the identified light sources for guidance of the vehicle via the light pattern array.

A unitary composite structure and methods of forming are presented. A method of laying up a unitary composite structure comprises laying up a plurality of dome plies on a rounded end of a mandrel using a plurality of rosettes; laying up a plurality of cylindrical plies on a cylindrical surface of the mandrel using a layup rosette independent of the plurality of rosettes; and forming a transition region comprising a joint between the plurality of dome plies and the plurality of cylindrical plies by varying lengths of the plurality of dome plies and lengths of the plurality of cylindrical plies.

An environmental control system pack for an aircraft that includes a ram air circuit and a bleed flow circuit. The ram air circuit receives air from an atmosphere on an exterior of the aircraft and expels the air through an outlet back into the atmosphere. The bleed flow circuit receives bleed air and cools the air prior to the bleed air being delivered to an interior space. The environmental control system pack uses energy from the bleed air to drive a fan in the ram air circuit. This causes an increase in a compression power of the air in the ram air circuit to increase a thrust of the air exiting the ram air circuit through the outlet.

Systems and methods are provided for fabricating multiple segment spars for an aircraft. In one example the method includes fabricating preforms of fiber reinforced material for spar segments, hardening the preforms to form the spar segments, and bonding the spar segments together to form a completed spar detail. In addition to bonding, other examples include co-curing and fastening the spar segments. In additional examples, the spar segments include kinks or subkinks as described.

An environmental control system pack for an aircraft that includes a ram air circuit and a bleed flow circuit. The ram air circuit receives air from an atmosphere on an exterior of the aircraft and expels the air through an outlet back into the atmosphere. The bleed flow circuit receives bleed air and cools the air prior to the bleed air being delivered to an interior space. The environmental control system pack uses energy from the bleed air to drive a fan in the ram air circuit. This causes an increase in a compression power of the air in the ram air circuit to increase a thrust of the air exiting the ram air circuit through the outlet.

A pressure diffuser to accommodate changes in pressure of a fluid within a fluid supply. The pressure diffuser includes a housing with an interior space and with an inlet and an outlet. A diverting member is positioned within the interior space. The diverting member is configured to divert the fluid within the interior space away from the outlet. An elastic membrane is positioned radially within the interior space between the housing and the diverting member. The elastic membrane is configured to receive the fluid from the diverting member and to expand and contract dependent on a pressure of the fluid.

A composite material assembly (20) comprises at least one composite material assembly member (22, 24, 26) comprising a dry fiber material impregnated with an epoxy resin-containing material. Said at least one assembly member (22, 24, 26) comprises a first side (22a, 24a, 26a); a second side (22b, 24b, 26b); and a longitudinal radius filler cavity (28) bounded by the second side (22b, 24b, 26b), said cavity (28) comprising a cavity radius. The composite material assembly (20) further comprises a tailorable composite material longitudinal radius filler (30) positioned within the cavity (28), said radius filler (30) comprising a radius dimensioned to substantially match the cavity radius, said radius filler (30) comprising a recycled dry fiber material (40) impregnated with the epoxy resin-containing material (42).

There is provided an airflow system for a building. The airflow system includes at least one air purification system providing purified air and receiving recirculated air; at least one air supply assembly supplying the purified air from the air purification system to at least one interior airflow space including one or more of, an aisleway, a cafeteria, a restroom, and an elevator; at least one air return assembly returning the recirculated air from the at least one interior airflow space to the at least one air purification system; directional airstream(s) formed between the air supply assembly and the air return assembly, and comprising at least one or more of, a directed airflow field around each occupant, air barrier(s) between each occupant, and an airflow field around each occupant; and at least one control system controlling the airflow system. The airflow system provides a contamination mitigation for each occupant.