Abstract: An inlet arrangement is disclosed herein for use with a supersonic jet engine configured to consume air at a predetermined mass flow rate when the supersonic jet engine is operating at a predetermined power setting and moving at a predetermined Mach speed. The air inlet arrangement includes, but is not limited to, a cowl having a cowl lip and a center body coaxially aligned with the cowl. A protruding portion of the center body extends upstream of the cowl lip for a length greater than a conventional spike length. The protruding portion is configured to divert air flowing over the protruding portion out of a pathway of an inlet to the supersonic jet engine such that a remaining airflow approaching and entering the inlet matches the predetermined mass flow rate.

Abstract: Methods, systems, and computer program products are described for automatically reducing interference within received signals. A first radio frequency (RF) signal having (i) a desired component and (ii) an interference component with a noise component and a jammed component is received. A trained machine learning (ML) model extracts, from the RF signal, the jammed component and a portion of the noise component. The trained ML model generates and outputs a second RF signal comprising the desired component and a reduced noise component. The reduced noise component has the portion of the noise component removed. The jammed component is removed from the second RF signal.

Abstract: A communications network comprising of n-hop local neighborhoods. The network includes a plurality of communication nodes and a plurality of local neighborhoods wherein each local neighborhood includes a central node around which the local neighborhood is defined. The network also includes a subset of the plurality of nodes located within the local neighborhoods of each of the central nodes. Each of the subset of the plurality of nodes in a local neighborhood is not more than n hops away over currently existing links from the central node of the local neighborhood.

Abstract: A transport trailer and a method for transporting an oversize load are provided. In one nonlimiting example, the transport trailer includes a trailer. The trailer includes an elongated body that extends in a length direction and that has an upper base surface. A support assembly is configured to support the oversize load and is pivotably coupled to the trailer to move between a first position and a second position. In the first position, the support assembly extends over the upper base surface and beyond the trailer in a width direction that is transverse to the length direction to define a wide load overhang that extends beyond the trailer in the width direction. In the second position, the support assembly is positioned at an incline relative to the first position to one of reduce and eliminate the wide load overhang.

Abstract: The processor supplies flight commands to the flight control system by selectively blending pilot input with control signals from the autopilot. The processor generates a projected recovery trajectory through successive iterations, each beginning at the current aircraft location and using a recovery constraint selectable by the processor to influences a degree of flight aggressiveness. A detection system that identifies and invokes a state of threat existence if a threat exists along the projected recovery trajectory. The processor during threat existence in a first iteration commands an initial soft recovery, with permitted blended pilot input. If the threat exists on subsequent iteration, the processor commands a more aggressive recovery while attenuating blended pilot input.

Abstract: The present application relates to securing a mattress within an aircraft including a pliable enclosure configured for enclosing a cushion including a fastener system for providing access to an interior of the pliable enclosure when the fastener system is in an open state and for restraining the mattress when the fastener system is in a closed state and wherein the pliable enclosure has a top surface and a bottom surface and a strapping system affixed to the bottom surface wherein the strapping system includes a strap extension affixed to the strapping system wherein the strap extension is configured to be received by a retention clip secured to a bed support platform.

Abstract: The present application relates to providing an aircraft storage container including a lower portion having a horizontal bottom and a plurality of vertical sides configured to form a storage volume, an upper portion rotationally coupled to one of the plurality of vertical sides, a gas piston having a locking mechanism wherein the gas piston is coupled between the lower portion and the upper portion, the gas piston being configured to support the upper portion when the locking mechanism is engaged, a rotational member operative to disengage the locking mechanism when rotated and to engage the locking mechanism when released, and a latch mechanism having a rotational lever, wherein the latch mechanism is operative to rotate the rotational member in response to a pressure on the rotational lever.

Abstract: An aircraft includes a passenger cabin, a plurality of settable cabin environment systems, and an aircraft environment management system. The passenger cabin has an environment. The plurality of settable cabin environment systems are in operable communication with the passenger cabin and each control an aspect of the environment based on a setting. The aircraft environment management system is in electronic communication with the plurality of settable cabin environment systems and is programmed to: receive a preset capture request from a user; store, as an environment preset, the setting as it existed for each of the plurality of settable cabin environment systems at a time of receipt of the preset capture request; receive a preset recall request for the environment preset; and recall the environment preset by adjusting the setting of each of the plurality of settable cabin environment systems according to the environment preset.

Abstract: Under one aspect, a method is provided for processing a received signal, the received signal including a desired signal and an interference signal that spectrally overlaps the desired signal. The method can include obtaining an amplitude of the received signal. The method also can include obtaining an average amplitude of the received signal based on at least one prior amplitude of the received signal. The method also can include subtracting the amplitude from the average amplitude to obtain an amplitude residual. The method also can include, based upon an absolute value of the amplitude residual being less than or equal to a first threshold, inputting the received signal into an interference suppression algorithm so as to generate a first output including the desired signal with reduced contribution from the interference signal.

Abstract: A physics package for an atomic clock is provided herein. The atomic clock may include a resonance cell storing alkali vapor having first and second hyperfine ground states and an excited state, a light source to transmit light through the resonance cell at a frequency corresponding to electronic decay from the excited state to the first ground state, and a photodetector to receive light from the light source. The physics package may include a laser, and controller circuitry to, at a first time, allow light from the laser to optically pump the alkali vapor from the first hyperfine ground state to the excited state; and at a second time, allow the photodetector to receive light source light from the resonance cell while inhibiting light from the laser from optically pumping the alkali vapor in the resonance cell.

Abstract: An aircraft includes a brake lever for receiving a pilot braking input as a lever travel of the brake lever, a braking wheel operatively coupled with the brake lever to brake the aircraft based on the lever travel, a brake actuator operatively coupled with the braking wheel to apply a braking force in response to a braking pressure provided to the brake actuator, and a brake pressure circuit. The brake pressure circuit is configured for: estimating a maximum braking pressure above which the braking wheel will skid with respect to a ground surface; scaling a lever gain of the brake lever to command the maximum braking pressure at a full travel of the brake lever such that a remaining brake lever travel indicates the amount of braking capability remaining for the aircraft; and braking the braking wheel based on the lever gain and the lever travel.

Abstract: Apparatuses and methods for activating a switch are provided. The switch is supported by one of a bracket and a panel and includes a switch body and a switch plunger that is moveably coupled to the switch body to activate and deactivate the switch. In one example, the apparatus includes a clamp body that is configured to be removably coupled to the one of the bracket and the panel and that has an opening formed therethrough. The apparatus further includes a rod portion having a first end portion that has a surface that includes a first concave surface. The rod portion is configured to be advanced through the opening. The surface interfaces with the switch plunger and moves the switch plunger to activate the switch when the clamp body is coupled to the one of the bracket and the panel and when the rod portion is advanced through the opening.

Abstract: The present application relates to providing mechanical and environmental protection to an electronics rack including a frame configured in a vertical orientation configured to receive an electronics rack, a front cover and a back cover, wherein the front cover and the back cover are configured to enclose the electronics rack when the front cover is attached to the frame and when the back cover is attached to the frame, a first fastener for mechanically coupling a top portion of the electronics rack to a top portion of the frame, a second fastener for coupling a bottom portion of the electronics rack to a bottom portion of the frame and a horizontal base for supporting the frame, the base including a mechanical interface for a material handling device, at least one castor and at least one floor lock.

Abstract: Flight control systems, flight control methods, and aircraft are provided.

Abstract: The pilot communication system employs a transducer array of individual spaced apart speakers and/or microphones for deployment within the cockpit. A signal processing circuit interfaces with the transducer array and also with the aircraft avionics communication system, and selectively applies different time delays to the individual speakers and/or microphones to create in the array an acoustic beam having steerable coverage within the acoustic space of the cockpit. By adjusting the time delays the signal processing circuit directs and focuses sound from the speakers to the pilot and similarly focuses the microphones on the pilot's mouth. In this way the pilots can communicate with each other and with air traffic control without the need to wear headsets. The system also significantly reduces flight deck warnings from being introduced into the cabin environment.

Abstract: The pilot communication system employs a transducer array of individual spaced apart speakers and/or microphones for deployment within the cockpit. A signal processing circuit interfaces with the transducer array and also with the aircraft avionics communication system, and selectively applies different time delays to the individual speakers and/or microphones to create in the array an acoustic beam having steerable coverage within the acoustic space of the cockpit. By adjusting the time delays the signal processing circuit directs and focuses sound from the speakers to the pilot and similarly focuses the microphones on the pilot's mouth. In this way the pilots can communicate with each other and with air traffic control without the need to wear headsets. The system also significantly reduces flight deck warnings from being introduced into the cabin environment.

Abstract: Baffled Calotte dome observation and/or communications systems are disclosed. For instance, a visible or infrared telescope and associated sensor systems, a laser, etc., may be enclosed in a Calotte dome with a baffle mounted on the opening and a window and/or filter mounted on top of the baffle. The Calotte dome steers the baffle in both elevation and azimuth, enabling the system to point and track objects moving on arbitrary trajectories.

Abstract: A method of accelerating the reduction of residual stress in a bonded structure is provided. The method can include: providing a bonded structure having at least two substructures, wherein the substructures are bonded together with an adhesive; and submitting the bonded structure to a high-humidity environment having a relative humidity of at least 75%. The method can also include a step of submitting the bonded structure to an low-humidity environment having a relative humidity of at most 20%. According to the method, the bonded structure can have a first residual stress at a first time and a second residual stress at a second time, wherein an absolute value of the first residual stress is greater than an absolute value of the second residual stress. According to the method, the residual stress at the second time can be about zero.

Abstract: Various non-limiting embodiments of a tool for actuating a valve, a method for making a tool for actuating a valve, and a method for actuating a valve, are provided. In one example, the tool includes a shaft defining a longitudinal axis and configured to transfer force to the valve for actuating the valve. A body has a wall surrounding a portion of the shaft. The wall defines a track that is formed therein and that has a track section substantially parallel to the longitudinal axis. A positive feature is coupled to the shaft and disposed in the track. The shaft is slidingly coupled to the body and when a force is applied to the shaft in a direction aligned with the longitudinal axis, the shaft moves relative to the body and the positive feature moves through the track section that restricts the shaft from being rotated about the longitudinal axis.