Abstract: An extruder includes a receptacle for containing material to be extruded. The extruder further includes a dispersion blade positioned within the receptacle and a nozzle secured to the receptacle. The nozzle defines a first opening positioned within an interior of the receptacle, defines a second opening positioned outside of the receptacle and defines a channel which extends from the first opening through the nozzle to the second opening defining a flow path which extends from the first opening, through the channel and to the second opening. The nozzle extends through a wall of the receptacle and into the interior of the receptacle such that the first opening is positioned spaced apart from the wall.

Abstract: A hierarchical heat exchanger manifold includes: first and second fluid passages respectively open to an inlet and an outlet in a first level of the heat exchanger manifold; a plurality of first and second fluid passages in a second level of the heat exchanger manifold; and a plurality of first and second fluid passages in a third level of the heat exchanger manifold. A number of the first fluid passages in the third level is greater than a number of the first fluid passages in the second level. Each of the first fluid passages in the second level is in fluid communication with the inlet and at least one of the first fluid passages in the third level, and each of the second fluid passages in the second level is in fluid communication with the outlet and at least one of the second fluid passages in the third level.

Abstract: An extruder includes a receptacle for containing material to be extruded. The extruder further includes a dispersion blade positioned within the receptacle and a nozzle secured to the receptacle. The nozzle defines a first opening positioned within an interior of the receptacle, defines a second opening positioned outside of the receptacle and defines a channel which extends from the first opening through the nozzle to the second opening defining a flow path which extends from the first opening, through the channel and to the second opening. The nozzle extends through a wall of the receptacle and into the interior of the receptacle such that the first opening is positioned spaced apart from the wall.

Abstract: An extruder includes a receptacle for containing material to be extruded. The extruder further includes a dispersion blade positioned within the receptacle and a nozzle secured to the receptacle. The nozzle defines a first opening positioned within an interior of the receptacle, defines a second opening positioned outside of the receptacle and defines a channel which extends from the first opening through the nozzle to the second opening defining a flow path which extends from the first opening, through the channel and to the second opening. The nozzle extends through a wall of the receptacle and into the interior of the receptacle such that the first opening is positioned spaced apart from the wall.

Abstract: A hierarchical heat exchanger manifold includes: first and second fluid passages respectively open to an inlet and an outlet in a first level of the heat exchanger manifold; a plurality of first and second fluid passages in a second level of the heat exchanger manifold; and a plurality of first and second fluid passages in a third level of the heat exchanger manifold. A number of the first fluid passages in the third level is greater than a number of the first fluid passages in the second level. Each of the first fluid passages in the second level is in fluid communication with the inlet and at least one of the first fluid passages in the third level, and each of the second fluid passages in the second level is in fluid communication with the outlet and at least one of the second fluid passages in the third level.

Abstract: A precursor material is provided for additive manufacturing of a low-density, high-porosity ceramic part. The precursor material includes a body of refractory fibers and a binder in admixture with the body of refractory fibers. The precursor material further includes a viscosity control additive in admixture with the binder and the body of refractory fibers to provide an overall mixture with a viscosity between about 0.3 centipoise and about 150,000 centipoise.

Abstract: Ignition-quenching systems comprise an ignition-quenching cover configured to quench an ignition event in a combustible environment triggered by an ignition source associated with a fastener stack. The ignition-quenching cover comprises a porous body that is gas permeable and that has pores sized to quench ignition in the combustible environment. The ignition-quenching cover further comprises a cover attachment feature configured to mate with a fastener attachment feature of the fastener stack. The ignition-quenching cover is configured to cover the fastener stack, which may be associated with a potential ignition source that produces an ignition event in the combustible environment. The porous body may include one or more porous elements that may be formed of various polymeric, mesh, or fabric materials. The ignition-quenching cover may comprise a non-porous frame that is bonded to the porous body and that defines the cover attachment feature.

Abstract: Ignition-quenching systems comprise an ignition-quenching cover configured to quench an ignition event in a combustible environment triggered by an ignition source associated with a fastener stack. The ignition-quenching cover comprises a porous body that is gas permeable and that has pores sized to quench ignition in the combustible environment. The ignition-quenching cover further comprises a cover attachment feature configured to mate with a fastener attachment feature of the fastener stack. The ignition-quenching cover is configured to cover the fastener stack, which may be associated with a potential ignition source that produces an ignition event in the combustible environment. The porous body may include one or more porous elements that may be formed of various polymeric, mesh, or fabric materials. The ignition-quenching cover may comprise a non-porous frame that is bonded to the porous body and that defines the cover attachment feature.

Abstract: A formation assembly for use in manufacturing a reinforced insulation panel including a foam material and a reinforcing structure includes a back plate including a first surface configured to receive the foam material, and a first support sheet spaced from the first surface to form a gap therebetween, wherein the first support sheet supports the reinforcing structure. The formation assembly also includes a second support sheet spaced from the first support sheet, wherein the second support sheet defines an upper boundary of the reinforced insulation panel. A rigid structure is coupled to the second support sheet, wherein the rigid structure restricts movement of the reinforced insulation panel.

Abstract: A precursor material is provided for additive manufacturing of a low-density, high-porosity ceramic part. The precursor material includes a body of refractory fibers and a binder in admixture with the body of refractory fibers. The precursor material further includes a viscosity control additive in admixture with the binder and the body of refractory fibers to provide an overall mixture with a viscosity between about 0.3 centipoise and about 150,000 centipoise.

Abstract: An extruder includes a receptacle for containing material to be extruded. The extruder further includes a dispersion blade positioned within the receptacle and a nozzle secured to the receptacle. The nozzle defines a first opening positioned within an interior of the receptacle, defines a second opening positioned outside of the receptacle and defines a channel which extends from the first opening through the nozzle to the second opening defining a flow path which extends from the first opening, through the channel and to the second opening. The nozzle extends through a wall of the receptacle and into the interior of the receptacle such that the first opening is positioned spaced apart from the wall.

Abstract: A precursor material is provided for additive manufacturing of a low-density, high-porosity ceramic part. The precursor material comprises a body of refractory fibers and a binder in admixture with the body of refractory fibers. The precursor material further comprises a viscosity control additive in admixture with the binder and the body of refractory fibers to provide an overall mixture with a viscosity between about 0.3 centipoise and about 150,000 centipoise. The overall mixture can be extruded through a nozzle to manufacture the low-density, high porosity ceramic part. The precursor material is produced by obtaining a refractory fiber slurry, and adding a viscosity control additive to the slurry to provide the slurry with a viscosity that is suitable for extrusion through a nozzle to manufacture a low-density, high-porosity ceramic part.

Abstract: A formation assembly for use in manufacturing a reinforced insulation panel including a foam material and a reinforcing structure includes a back plate including a first surface configured to receive the foam material, and a first support sheet spaced from the first surface to form a gap therebetween, wherein the first support sheet supports the reinforcing structure. The formation assembly also includes a second support sheet spaced from the first support sheet, wherein the second support sheet defines an upper boundary of the reinforced insulation panel. A rigid structure is coupled to the second support sheet, wherein the rigid structure restricts movement of the reinforced insulation panel.

Abstract: A precursor material is provided for additive manufacturing of a low-density, high-porosity ceramic part. The precursor material comprises a body of refractory fibers and a binder in admixture with the body of refractory fibers. The precursor material further comprises a viscosity control additive in admixture with the binder and the body of refractory fibers to provide an overall mixture with a viscosity between about 0.3 centipoise and about 150,000 centipoise. The overall mixture can be extruded through a nozzle to manufacture the low-density, high porosity ceramic part. The precursor material is produced by obtaining a refractory fiber slurry, and adding a viscosity control additive to the slurry to provide the slurry with a viscosity that is suitable for extrusion through a nozzle to manufacture a low-density, high-porosity ceramic part.