TechnologiesDisplaying technologies 33 - 40 of 247 in total
Method and device for tensile testing of cable bundles
AFRL has developed a standard tensile test device that is improved to accurately measure the mechanical properties of stranded cables, ropes, and other composite structures. In this device, a witness is attached to the top and bottom mounting blocks holding the cable under test.
High-energy laser atmospheric compensation and aimpoint maintenance
AFRL has developed a high-energy laser weapon system in which the high-energy laser beam itself is used to correct for atmospheric fluctuations, replacing a separate beacon illuminator system.
Adaptive photonic coupler
AFRL has developed a method to maximize the coupling efficiency between a collimated, free-space optical signal and a fiber optic waveguide using an active optical element to steer and focus the collimated beam driven by an adaptive controller. The controller periodically auto-calibrates the active optical element's parameters to maximize the measured power received by the waveguide using a gradient ascent optimization algorithm.
Method for fabricating grid-stiffened composite structures US8236124
AFRL has developed a method for fabricating a grid-stiffened structure from fiber-reinforced composite materials. A skin is applied to a smooth, hard base tool. Ribs comprised of carbon-fiber tows are formed on the skin, and shallow cavities are formed between the ribs and the skin. An expansion block is placed in each of the cavities, and is held in place by an elastomeric contact adhesive having adhesive properties that are substantially diminished when the adhesive is heated to an elevated curing temperature. The assembly is then autoclave cured. After cooling, the formed structure is separated from the base tool and the expansion blocks are removed from the cavities. A grid-stiffened sandwich structure is formed by applying an outer skin over the ribs and expansion blocks, before curing the assembly. After cooling, the outer skin is removed to allow extraction of the blocks, and subsequently bonded to the ribs.
System and method for phase locking multiple oscillators
AFRL has designed a system in which multiple microwave oscillators can be phase locked such that the power output of multiple oscillators can be coherently combined to achieve a single output which has the total sum power of the multiple oscillators. AFRL has also designed a method for phase locking multiple microwave oscillators that includes steps of combining power output of multiple microwave oscillators to achieve a single output to a load and inserting a partial obstruction between at least two multiple oscillators and the load.
Passive acoustic barrier
AFRL has developed a capsule that contains fluid and a solid inertial mass that is free to move within the capsule. This device augments acoustic energy dissipation with damping the resonant frequency of the fairing to reduce the amount of energy that is transmitted into the acoustic volume contained within the wall.
Deployable hierarchical structure
AFRL has developed a collapsible and deployable hierarchical open lattice assembly made of hinge boxes of 12 battens connected by hinge nodes. The hinge nodes are made of resilient flexure joints, each joint connected to a batten. Each batten has a 90-degree in-plane rotation capability.
Methods to actively protect spacecraft from damage due to collision with ion
AFRL has developed a technique where one or more conducting plates that are electrically-biased negatively with respect to a spacecraft's electrical potential and insulated from the spacecraft surface are located around the spacecraft surface. On the surface, contaminant ions in a plasma surrounding the spacecraft are accelerated through an electric potential, caused to collide with the conductive surface, neutralized through collisions with surface atoms, and then reflected away from the spacecraft as neutral atoms or molecules.
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