Abstract: Aircraft wings having improved deflection control ribs are described. An example aircraft wing includes a rear spar, an outboard flap, a rear spar fitting, and a deflection control rib. The outboard flap is movable relative to the rear spar between a stowed position and a deployed position. The outboard flap includes a closure rib and a roller coupled to the closure rib. The rear spar fitting is coupled to the rear spar. The deflection control rib includes a primary arm and a catch. The primary arm is coupled to and extends rearward from the rear spar fitting proximate a lower surface of the aircraft wing. The catch is coupled to and extends rearward from the primary arm. The catch includes an opening to receive the roller of the outboard flap when the outboard flap is in the stowed position.

Abstract: Aircraft wings having improved deflection control ribs are described. An example aircraft wing includes a rear spar, an outboard flap, a rear spar fitting, and a deflection control rib. The outboard flap is movable relative to the rear spar between a stowed position and a deployed position. The outboard flap includes a closure rib and a roller coupled to the closure rib. The rear spar fitting is coupled to the rear spar. The deflection control rib includes a primary arm and a catch. The primary arm is coupled to and extends rearward from the rear spar fitting proximate a lower surface of the aircraft wing. The catch is coupled to and extends rearward from the primary arm. The catch includes an opening to receive the roller of the outboard flap when the outboard flap is in the stowed position.

Abstract: An emergency communication system that is capable of broadcasting a live message to a specific zone of a protected structure, recording the live transmission, and repeating the recorded message to the same protected zone. In certain embodiments configured to protect multiple zones, the system further permits broadcast of a second live message to another zone of the structure, recording the second live broadcast, and repeating the second recorded message in the same zone to which the message was broadcast live. The system includes hardware such as a processing element and speaker assemblies and a computer program for instructing the processing element to carry out the transmission, recording, and re-broadcasting of messages through the speaker assemblies.

Abstract: An emergency communication system that is capable of broadcasting a live message to a specific zone of a protected structure, recording the live transmission, and repeating the recorded message to the same protected zone. In certain embodiments configured to protect multiple zones, the system further permits broadcast of a second live message to another zone of the structure, recording the second live broadcast, and repeating the second recorded message in the same zone to which the message was broadcast live. The system includes hardware such as a processing element and speaker assemblies and a computer program for instructing the processing element to carry out the transmission, recording, and re-broadcasting of messages through the speaker assemblies.

Abstract: An emergency communication system that is capable of broadcasting a live message to a specific zone of a protected structure, recording the live transmission, and repeating the recorded message to the same protected zone. In certain embodiments configured to protect multiple zones, the system further permits broadcast of a second live message to another zone of the structure, recording the second live broadcast, and repeating the second recorded message in the same zone to which the message was broadcast live. The system includes hardware such as a processing element and speaker assemblies and a computer program for instructing the processing element to carry out the transmission, recording, and re-broadcasting of messages through the speaker assemblies.

Abstract: An emergency communication system that is capable of broadcasting a live message to a specific zone of a protected structure, recording the live transmission, and repeating the recorded message to the same protected zone. In certain embodiments configured to protect multiple zones, the system further permits broadcast of a second live message to another zone of the structure, recording the second live broadcast, and repeating the second recorded message in the same zone to which the message was broadcast live. The system includes hardware such as a processing element and speaker assemblies and a computer program for instructing the processing element to carry out the transmission, recording, and re-broadcasting of messages through the speaker assemblies.

Abstract: A process of fabricating aerospace parts using selective laser sintering is provided, wherein the process generally comprises the steps of preparing a powder nylon material, loading the powder nylon material into a laser sintering machine, warming up the powder nylon material according to build warm-up parameters, building the part according to build parameters and part parameters, and cooling down the part according to build cool-down parameters. As a result, parts are produced that are directly used in aerospace structures, which meet the stringent performance requirements of aerospace applications, rather than as rapid prototypes as with conventional selective laser sintering processes. Additionally, specific designs for aerospace parts such as ducts, panels, and shrouds are provided that are produced by the selective laser sintering process.