Abstract: Systems and methods for manufacturing aircraft are disclosed. For example, an aircraft manufacturing system for repetitively manufacturing aircraft comprises a first manufacturing zone configured to repetitively manufacture first aircraft subassemblies, a second manufacturing zone configured to repetitively manufacture second aircraft subassemblies, and a third manufacturing zone configured to receive the first aircraft subassemblies from the first manufacturing zone, to receive the second aircraft subassemblies from the second manufacturing zone, and to repetitively assemble the first aircraft subassemblies and the second aircraft subassemblies into the aircraft.

Abstract: Systems and methods for manufacturing aircraft are disclosed. For example, a method for repetitively manufacturing aircraft comprises fractionally pulsing a constituent part down an assembly line by periodically advancing the constituent part down the assembly line by less than a length of the constituent part. The periodic advancing may include advancing the aircraft component by a pulse length that is less than the length of the aircraft component, stopping movement of the aircraft component for a duration and performing work on the aircraft component, and then advancing the aircraft component by the pulse length again. In another example, a method comprises determining a fractional pulse length to fractionally pulse one or more constituent parts of an aircraft based on one or more of a minimum workstation length of one or more assembly line workstations and a minimum section length of one or more work processes to be performed.

Abstract: A segmentation firewall executing on a host enforces a segmentation policy. In a co-existence mode, the segmentation firewall operates in co-existence with a system firewall that enforces a security policy. The segmentation firewall is configured to either drop packets that do not match any permissive rule or pass packets that match a permissive rule to the system firewall to enable the system firewall to determine whether to drop or accept the passed packets. To enable efficient operation of the segmentation firewall when operating in co-existence with the system firewall, the segmentation firewall may include a plurality of rule chains and may be configured to exit a chain and bypass remaining rule chains upon an input packet matching a permissive rule of the segmentation policy.

Abstract: A method at a computing device in a public ledger cryptography system, the method including creating a purpose string, the purpose string defining transaction parameters for an account within the public ledger cryptography system; using the purpose string to create a private key and associated public key for an account within the public ledger cryptography system; and providing the purpose string for use in verification of a transaction from the account within the public ledger cryptography system.

Abstract: A filtration device may include a securement section and a filter. The securement section may be configured to be threadably secured to and extend within an interior of a common rail fuel injector. The securement section may include a passage for fuel. The passage may extend in a direction along a central axis of the securement section. The filter may be configured to be positioned within the interior of the common rail fuel injector to filter the fuel flowing through the common rail fuel injector. The filter may include a plurality of holes that are fluidly connecting to the passage of the securement section. The diameter of the filter may be smaller than a diameter of the securement section.

Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, from a semigroup, a first value “a”; multiplying the first value “a” by a second value “b” to create a third value “d”, the second value “b” being selected from the semigroup; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value comprising the second value “b” multiplied by a fifth value “c” selected by the second party from the semigroup; and creating a shared secret by multiplying the first value “a” with the fourth value “e”, wherein the shared secret matches the third value “d” multiplied by the fifth value “c”.

Abstract: A method of manufacturing a motoring system for a gas turbine engine including the steps of: forming a mechanical shaft fuse, the mechanical shaft fuse including a plurality of through holes; forming an outer housing; installing a reduction gear train into the outer housing, the reduction gear train having an input and an output; operably connecting an electric motor to the input; operably connecting a clutch to the output using the mechanical shaft fuse, the clutch in operation engages and disengages the reduction gear train; operably connecting a starter to the clutch, the starter having an output shaft; and operably connecting an accessory gearbox to the output shaft of the starter. The mechanical shaft fuse in operation shears when torque on the mechanical is greater than or equal to a selected value.

Abstract: Methods, systems, and computer programs for generating cryptographic function parameters are described. In some examples, astronomical data from an observed astronomical event is obtained. A pseudorandom generator is seeded based on the astronomical data. After seeding the pseudorandom generator, an output from the pseudorandom generator is obtained. A parameter for a cryptographic function is generated by operation of one or more data processors. The parameter is generated from the output from the pseudorandom generator.

Abstract: A method for operating a pseudorandom generator is disclosed. The method may be implemented by a processor of a mobile computing device. The method includes: collecting raw sensor data from at least one sensor associated with the mobile computing device; selecting a subset of the raw sensor data; retrieving first representation representing accumulated entropy associated with one or more previously acquired raw sensor data sets for the at least one sensor; and generating a seed for a pseudorandom generator based on combining the first representation and the selected subset of raw sensor data.

Abstract: An enforcement module receives a DNS-based rule of a segmentation policy that controls access of a managed workload to workloads in a DNS domain in which the IP addresses of the workloads associated with a domain name are resolved by a DNS server. When the managed workload makes a connection request to the workload associated with the domain name, the enforcement module snoops on a DNS response from the DNS server to learn the IP address of the workload associated with the domain name. If a domain name of the DNS domain is in a whitelist of domain names permitted by the DNS-based rule, the enforcement module adds the learned IP address to a whitelist of IP addresses and configures a firewall associated with the managed workload to permit connections to the IP addresses in the whitelist.

Abstract: A door handle sanitizer includes a housing that is mountable to a door and an access lid pivotally attached to the housing. An interior volume of the housing includes a dispensing mechanism having a connector disposed within the interior volume that is configured to removably receive a sanitizer refill container, and a nozzle configured to dispense a sanitizing material onto the door handle. A power supply is operably connected to a motion sensor, a timer, indicator lights, a dispensing mechanism actuator, and a control circuit. The control circuit includes control switches that allow for customization of the door handle sanitizer's spray frequency. If a timer switch is set to a timer interval, then the control circuit activates the dispenser in an interval corresponding to the selected interval. If a motion sensor switch is set to an on position, then the control circuit activates the dispensing mechanism actuator when the motion sensor detects motion.

Abstract: A panel assembly includes a panel member having a mounting side and at least one elongated member. The at least one elongated member includes a mounting edge, a second edge opposite the mounting edge of the at least one elongated member, and a plurality of first spaced apart openings. The panel assembly further includes at least one elongated intersecting member. The at least one elongated intersecting member includes a mounting edge, a second edge opposite the mounting edge of the at least one elongated intersecting member, and a plurality of second spaced apart openings. Further, one of the at least one elongated member and the at least one elongated intersecting member includes at least one slot, the at least one elongated member and the at least one elongated intersecting member intersecting at the at least one slot.

Abstract: The present disclosure includes methods of using a sacrificial, protective head overcoat during the manufacture of sliders. In some embodiments, the final trailing edge topography of the transducer devices is formed before applying the sacrificial, protective head overcoat. In some embodiments, the final trailing edge topography of the transducer devices is formed after removing the sacrificial, protective head overcoat.

Abstract: A portable railroad spike remover comprises a claw assembly extractor that is shaped to engage and secure a railroad spike previously installed into a rail tie. The claw assembly extractor may include a pair of jaw members that are pivotally connected to each other by a pivoting pin and a rotating pin. Each jaw member may include a lower end configured to contact and secure a railroad spike and a pair of upper members interlocked with each other and pivotally connected to the clevis fastener with the rotating pin. When the drive shaft is rotated, the claw assembly extractor and the mounting flange may move inside the main housing in a vertical direction to extract the railroad spike from the rail tie.

Abstract: A portable railroad spike remover comprises an extractor that is shaped to engage and secure a railroad spike previously installed into a rail tie. A drive shaft is connected to the extractor such that as the drive shaft is rotated, the extractor is vertically raised and lowered within a main column. The extractor may have an opening extending through at least one side to engage the railroad spike.

Abstract: A fuel flow limiter assembly includes a limiter body forming a central bore, and including a shutoff piston within the central bore having a closing hydraulic surface exposed to a fluid pressure of the fuel inlet, and being movable from an open position, to a closed position based on a fuel pressure drop from a fuel inlet to a fuel outlet in the limiter assembly. A fuel filter is resident in the limiter assembly and supported in a connector coupled to the limiter body. The fuel filter is elongate and projects from the connector into a fuel flow path from the fuel inlet to the fuel outlet.

Abstract: A method at a computing device in a public ledger cryptography system, the method including creating a purpose string, the purpose string defining transaction parameters for an account within the public ledger cryptography system; using the purpose string to create a private key and associated public key for an account within the public ledger cryptography system; and providing the purpose string for use in verification of a transaction from the account within the public ledger cryptography system.

Abstract: Devices and methods of managing data stored within a container. The container may be associated with at least one registered user. The data within the container may be encrypted by a data encryption key (DEK). A computing device includes: a security module including a crypto-processor, a main processor, and memory. The memory stores instructions that, when executed, configure a processor to: authenticate a user based on a user secret associated with the container and generate a soft key based on the user secret. The instructions cause a crypto-processor to generate a secure generator output including a crypto key component and generate a hardened user key based on a key agreement protocol using the soft key and the crypto key component. The instructions cause a processor to construct an unencrypted DEK associated with the hardened user key and decrypt the subset of data using the unencrypted DEK.

Abstract: A portable railroad spike remover comprises an extractor that is shaped to engage and secure a railroad spike previously installed into a rail tie. A drive shaft is connected to the extractor such that as the drive shaft is rotated, the extractor is vertically raised and lowered within a main column. The extractor may have an opening extending through at least one side to engage the railroad spike.

Abstract: An apparatus for providing support to a first vertical busway extending between a floor surface and a ceiling surface, the first busway having first and second lateral faces, includes a frame having first and second vertical struts, wherein the first and second vertical struts are attached to the floor surface adjacent the first and second lateral faces; a lower pair of hangers each attached to the floor surface, wherein one of the lower pair of hangers is attached to the first lateral face, and wherein the other of the lower pair of hangers is attached to the second lateral face; and an upper pair of hangers vertically spaced apart from the lower pair of hangers, wherein the upper pair of hangers are attached to the first and second vertical struts and to the first and second lateral faces.