Abstract: A conduit cleaning device includes a body with a central portion, a forward portion comprising a neck, and a rear portion with a hose fitting adapted for connection to an associated hose. The body includes a main flow passage that extends through the hose fitting, through the central portion, and into the neck. A rotor is rotatably supported on the neck. The rotor includes at least one rotor nozzle orifice in fluid communication with the main flow passage. A centering device is secured to the central portion of the body. The centering device includes a core and a plurality of fins that project outwardly from the core. The core of the centering device includes a mounting bore that extends therethrough, wherein at least part of the hose fitting is located within the mounting bore of the core and an annular space is defined between the hose fitting and an inner surface of the mounting bore of the core.

Abstract: A conduit cleaning device includes a body with a central portion, a forward portion comprising a neck, and a rear portion with a hose fitting adapted for connection to an associated hose. The body includes a main flow passage that extends through the hose fitting, through the central portion, and into the neck. A rotor is rotatably supported on the neck. The rotor includes at least one rotor nozzle orifice in fluid communication with the main flow passage. A centering device is secured to the central portion of the body. The centering device includes a core and a plurality of fins that project outwardly from the core. The core of the centering device includes a mounting bore that extends therethrough, wherein at least part of the hose fitting is located within the mounting bore of the core and an annular space is defined between the hose fitting and an inner surface of the mounting bore of the core.

Abstract: A system for cleaning air in a vehicle by ultraviolet light includes an exposure chamber for exposure of air to ultraviolet light. An ultraviolet light source is mounted in the exposure chamber. A collection plenum chamber is connected to a first end of the exposure chamber. An air valve is connected to the collection plenum chamber. An expansion plenum chamber is connected to a second end of the exposure chamber including passages for distribution of air to the exposure chamber. An inlet conduit connected to the expansion plenum chamber directs air to the expansion plenum chamber. The system reliably cleans air and may be packaged so as to be integrated into existing vehicle structures, such as a passenger service unit of an airplane.

Abstract: An ice detector includes a pair of electrodes connected by a pair of leads to a control unit which measures the admittance between leads to thereby sense and detect the presence of ice and other contaminants formed on top thereof utilizing a detection circuit. The electrodes are integrated into patch which can be placed at different locations on an aircraft.

Abstract: A pneumatic deicing system includes a deicer assembly comprised of an outer layer, an inner ply, and a plurality of inflatable members provided therebetween. The deicer assembly is disposed directly on top of and bonded to an airfoil. The deicer assembly is inflated through an inflation port. Fluid is drained from the deicer assembly through a drain valve.

Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.

Abstract: An ice detector 110 includes a pair of electrodes 122, 124 connected by a pair of leads 116, 118 to a control unit 120 which measures the impedance (or other parameters) between leads 116 and 118 to thereby sense and detect ice or other contaminants formed on top thereof. Electrodes 122, 124 are integrated into patch 134 and comprised of a top layer 142 of conductive resin, a middle layer 144 of conductive cloth and a bottom layer 146 of conductive resin.

Abstract: A pneumatic deicing system includes a deicer assembly comprised of an outer layer having a low modulus of elasticity, an inner ply, and a plurality of inflatable members provided therebetween. The deicer assembly is disposed directly on top of and bonded to an airfoil. The inflatable members are inflated with an inflation apparatus that inflates in an inflation pattern comprised of a sequence of high frequency pressure pulses superimposed on a low frequency inflation pressure wave.

Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.

Abstract: An airfoil deicing system includes an airfoil substructure having an apex corresponding to the portion of the airfoil where the radius of curvature of the airfoil is smallest, the airfoil and the apex being bisected by a centerline, a deflectable shell disposed over the airfoil substructure for meeting and breaking an impinging airstream, a deflection means disposed between the airfoil substructure and the deflectable shell at the apex for deflecting the deflectable shell in the area of the apex away from the airfoil substructure and, at least one compressible zones provided beneath the deflectable shell adjacent the apex on either side of the centerline, the compressible zones facilitating deflection of the deflectable shell overlying the compressible zones toward the airfoil substructure when the deflection means deflects the deflectable shell.

Abstract: A modular ice protection system for an airfoil includes a deflection assembly attached to the airfoil and a removable outer shell having a modulus of elasticity of at least 40,000 kPa impermanently disposed over the deflection assembly, wherein the deflection assembly causes distortion of the separable outer shell during de-icing. The deflection assembly may likewise be removable from an underlying substructure which is attached to the airfoil.

Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.

Abstract: A de-icer comprises a compressible member immediately subjacent an outer skin overlying an apex of a leading edge. The compressible member facilitates deflection of the outer skin overlying the compressible member toward the substructure when the skin deflection means deflects the outer skin.