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WO/1998/024690A1 |
A three-dimensional active composite membrane (M), formed of two layers of polymer (100) and a reinforcement wire net (110) therebetween, actuated to assume selected different three-dimensional patterns (shapes) by an external Shape Memo...
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WO/1998/017519A1 |
The invention relates to a method and a device for preventing the accumulation of snow or ice on an external surface (4, 5) of a structural member (3), in particular a vehicle member, wherein the method comprises coating the surface with...
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WO/1998/001340A1 |
For avoiding icing of windmill wings of composite materials, use is made of microwave energy for heating of the composite material itself, this energy preferably being supplied from interior, fixedly mounted microwave generators in respo...
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WO/1998/000274A1 |
The present invention provides a method of and apparatus for heating an article by using magnetic induction heating and/or resistive heating. The method/apparatus allow for heating of articles having a matrix of fibres and resin and the ...
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WO/1997/024261A1 |
The proposed electrical power supply system pertains to aircraft electrical equipment and can be used in aircraft de-icing systems with electrical propeller heating. The proposed system comprises measuring converters which convert the ro...
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WO/1997/021543A1 |
An aircraft pneumatic deicer (20), formed of a fabric-reinforced elastomer (40), which has surface damage characterized by small cracks (80) or pinholes (70), is repaired by a process of filling the damage site with a compound composed o...
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WO/1997/006367A1 |
In order to de-ice a rotor blade of a wind driven power station with communicating cavities (9, 10), an optionally preheated heat-transfer fluid is passed through the cavities by means of electric fans. Near the root of the blade, where ...
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WO/1997/000201A1 |
The invention pertains to de-icing systems with electrical heating for rotating parts of aircraft. The proposed thermal de-icing system comprises: electrical heating elements incorporated in parts of the rotating elements; and a multipha...
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WO/1996/038311A1 |
The surface of a workpiece is cleaned by generating a steady-state one atmosphere glow discharge plasma above the surface of the workpiece. The use of one atmosphere, uniform glow discharge plasmas generated by a low frequency RF ion tra...
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WO/1996/037406A1 |
The present invention is de-icing system that uses electromagnetic actuators (100) mounted within the airfoil of an aircraft to effect de-icing. Advantageously, the actuators have low voltage and current requirements. Each actuator inclu...
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WO/1996/037405A1 |
An improved apparatus (11) for emitting infrared radiation of a desired wavelength includes a primary surface (35); a burner (24) for raising the temperature of the primary surface so as to cause the primary surface to emit infrared radi...
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WO/1996/028345A1 |
An apparatus and method are provided for remotely detecting ice on a polarization preserving surface. A target location (18) on the surface is irradiated with two cross-polarized beams (12a, 12b) of coherent light. A determination is the...
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WO/1996/028726A1 |
Rime or the like (2) on the surface (A) of a metal object (1) may be sensed by inserting therein a body (3) made of an identical material and having a flush interface (L), exposing it to ultrasonic waves that are reflected by said interf...
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WO/1996/026430A1 |
The invention concerns a process and device for determining the surface state of highways in particular, with respect to dryness, wet or icing-over. The surface is irradiated by a radiation source comprising an infrared component and the...
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WO/1996/018894A1 |
A contaminant detection system (100, 410, 800, 830) includes a transmitter (102, 122, 422, 442, 472, 516, 716, 736, 737, 810, 838, 846) for transmitting a guided wave (128, 420) through the skin (114, 422, 440, 470, 520, 532, 710, 712, 7...
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WO/1996/014242A1 |
A movable sheet (22) overlying a wing (20) is disclosed that creates laminar flow over its exposed surface. The movable sheet (22) serves as a shield for protecting a suction support structure (24) of a wing (20) against contamination, a...
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WO/1996/013427A1 |
To determine whether ice is present on an aircraft wing, the intensity of light in a band between 1.16 and 1.20 microns is determined as is the intensity in a band between 1.24 and 1.28 microns. The contrast, defined as the difference be...
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WO/1996/007588A1 |
A rotary apparatus is provided in which at least one electrically controlled device (3) is attached to a rotor (1). The rotor (1) carries coils such that rotation of the rotor generates power for the device (3). A switch (4) is provided ...
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WO/1996/007077A1 |
The present invention provides a method and apparatus for non destructive, in situ measuring thicknesses of layers on substrates. The method and device uses a probe of a radioactive source and a photodetector mounted behind the source fo...
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WO/1996/003316A1 |
An electrically powered heating element (1, 2) for a propeller blade is made up of a mat of fibres having at least surfaces which are electrically conductive. The mat can have a perforated backing to which it is fixed by adhesive. Method...
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WO/1995/034189A1 |
A de-icing system includes a thin sheet (100) of a shape memory alloy mounted over the leading edge surface (105) of an aircraft, with an electric heating layer (110) and a compressible polymer layer (120) therebetween. Upon detection of...
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WO/1995/021766A1 |
A detector indicating ice formation on the wing of an aircraft or any planear surface, based on a thread-like or a tape-like transducer, through which a supersonic signal is transmitted at one end. The attenuation of the signal having pa...
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WO/1995/015883A1 |
The invention relates to a method for installing the sensor wire to be used in connection with applying an ice detecting method and device, based on propagation of ultrasound in a metal wire, particularly in aircraft or the like. The sen...
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WO/1995/015670A1 |
An electrically conductive composite heating assembly that has as its foundation an electrically conductive non-woven fiber layer laminated between layers of fiberglass and other dielectric material and has an abrasion resistant outer la...
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WO/1995/013467A1 |
A system for removing and/or preventing ice build-up on an aircraft includes at least one heat exchanger (10, 60, 66, 72, 78) mounted within an aperture (22) in the tailpipe of a gas turbine engine (14). The heat exchanger includes an in...
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WO/1995/012523A1 |
An ice and snow detector having a tubular duct (10) mounted on a stand (12) which can be fixed to the exterior of, for example, a helicopter. Air is drawn through the duct (10) in the direction of the arrow by means of a venturi arrangem...
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WO/1995/004678A1 |
A warning system for detecting pre-flight aircraft icing employs parameter sensing means (40) located at a plurality of locations along an aircraft structure (14), each of said sensing means (40) positioned to sense an outer skin tempera...
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WO/1995/001666A1 |
An electrical circuit that provides ground fault protection by compensating for the capacitive leakage current between an electrothermal de-icing system bonded to an aircraft surface. A conductive shield is interposed between the resisti...
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WO/1994/026590A1 |
A low profile heater (11) coupled with a good insulator (36) is mounted directly on the aircraft skin (30), preferably on an aerodynamic surface. The heater (11) has a low aerodynamic profile, resulting in only a 0.004 % increase in drag...
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WO/1994/020819A1 |
The present invention is an improved ice sensor which is particularly effective in measuring and quantifying non-uniform, heterogeneous ice typically found on aircraft leading edges and top wing surfaces. In one embodiment, the ice senso...
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WO/1994/018072A1 |
An isolator assembly (5) for use in minimizing mechanical thermal and/or vibrationary strains between two structures (35, 36) is disclosed. The isolator assembly generally includes two spaced base members (10, 15) which are interconnecte...
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WO/1994/016944A1 |
A device for checking the function of deicing means (2, 5) for aircraft leading edges of wing and horizontal tail is described. The deicing means consists of at least one container, so-called "boot" whose volume can be increased through ...
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WO/1994/009463A1 |
For detecting the presence of a substance such as ice or snow on a surface such as the wing of an aircraft, light is emitted from an unpolarized source (13). The unpolarized light passes through a linear polarizer (11) which has a vertic...
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WO/1994/008233A1 |
An apparatus for identifying and measuring in real time substances overlying a surface comprises a plurality of electrodes, a temperature sensor, an electrode control system connected to the plurality of electrodes for defining an electr...
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WO1993024543A1 |
An anti-icing fluid suitable for ground treatment of aircraft, being a glycol-based, aqueous solution containing a hydrophobe-bearing, macromonomer-containing polymer thickener in an amount of less than about 5 weight %. Thickening occur...
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WO/1993/022548A1 |
An anti-icing system for a nacelle of a gas turbine powerplant is disclosed. Various construction details have been developed which provide means to exhaust fluid from an inlet shell cavity and into an external medium. In one embodiment,...
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WO/1993/018571A1 |
An electrical generator (1) comprising first and second relatively rotatable winding assemblies (5, 8), the first winding assembly (5) having a first electrical output for connection to a first electrical load (4) and the second winding ...
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WO/1993/006005A1 |
An aircraft structural component comprises a forward compartment (17) formed by a forward bulkhead (19) and a skin structure (21) which extends forwardly of the forward bulkhead (17) and which has an outer surface which requires to be pr...
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WO/1993/004920A1 |
A deicing system for a propeller driven aircraft includes deicing apparatus such as electro-expulsive blankets disposed on the rotating propeller blades. The deicing apparatus receives electrical power from the stationary side (66) of th...
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WO/1992/020575A1 |
The invention provides an apparatus and method for detecting the presence of ice on a surface (20). The invention uses cameras (22) to allow ice detection over a large area instead of a single point. The detecting apparatus provides an i...
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WO/1992/011616A1 |
Ice build-up on an aircraft is detected by imaging a test target on an area of interest on a structure and determining when the resolution of that test target becomes impaired.
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WO/1992/005414A1 |
A deicing apparatus includes a heat source (20) for producing deicing heat at one location on the body of an object and a heat distributing arrangement (22) for distributing the deicing heat to one or more surface areas to be deiced. The...
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WO/1991/012173A1 |
A composite structure (64) is disclosed for placement on an air, land or sea vehicle to attenuate electromagnetic waves and to break up ice accumulation which might occur under adverse weather conditions. The upper section (22) of the st...
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WO/1991/011891A1 |
Bonded laminate comprising durable outer surface which is resistant to abrasion and impermeable to water, bonded to and through a conductive network of fibers bonded integrally with an adhesive to a vehicle surface, for example, that of ...
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WO/1991/004646A1 |
An ice detector circuit (60) controls heating of an ice detecting probe (62). The circuit (60) generates an icing output as a function of a temperature output generated by the probe (62). A control circuit (114) cyclically controls a sta...
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WO/1990/011931A1 |
A thin-walled construction to be cleaned is brought into elastic deformation oscillations with converging waves generated by subjecting the construction, along the contours of the surface to be cleaned, to synchronous and similar single ...
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WO/1990/008695A1 |
Electric power is transferred to a rotating member (14) by a rotating conductive ring (24) and a retractable carrier (20). At least one brush (26) in the carrier (20) contacts the conductive ring (24) when transferring electric power. Wh...
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WO/1990/008064A1 |
The de-icing system of the present invention comprises a piezoelectric sensor means (IAS) and a processor means (CPU). A piezoelectric film is the preferred sensor means and a microprocessor is the preferred processor means. In a preferr...
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WO/1988/009941A1 |
An ice detector probe (10) senses an ice deposition from an air mass flowing relative to the probe (10). The probe (10) includes a support (12) for installation of the probe (10) to receive the airflow and an element (30) formed on a sub...
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WO/1986/001176A1 |
An ice measurement instrument includes a waveguide (53) operating in a transmission mode passing energy from an input port to an output port. The resonant frequency of the waveguide depends on the presence and/or thickness of ice at a me...
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