摘要:
A system and method to apply heat to an aircraft surface are disclosed. The composite aircraft structure comprises a base comprising a plurality of resin impregnated plies 212,214,216,218,220,222), heating layer (230) adjacent the base, wherein the heating layer com prises at least one heater, an adhesive layer (240a, 240b) adjacent the heating layer, a lightning protection layer (250) adjacent the heating layer, and an exterior surface layer (260) adjacent the lightning protection layer.
摘要:
An ice protection system (40) comprises deicing zones (101-103) each including an envelope (111-113) defining an ice-protection area. Adjacent envelopes have spanwise edge regions (161,162,172,173) flanking shared interzone borders (160,170). The edge regions (161,162,172,173) are provided with nonlinear contours having features (166,167,176,177) which project-and-recess in a direction generally parallel to the airstream direction (A).
摘要:
There is disclosed an ice protection system for a structure (1100), the ice protection system comprising: a plurality of independently controllable heater elements (1108, 1110, 1112) arranged on the structure; and a control system, operable: to detect an underperformance of at least one underperforming heater element (1114); and to control the supply of power to at least one further heater element (1120) in dependence on a stored relationship or algorithm relating said at least one further heater element to said at least one underperforming heater element.
摘要:
A method is disclosed for controlling the distribution of power to a plurality of devices, the method being carried out during a plurality of time periods, and the method during each time period after the first comprising: determining (S700) an energy or power deficit for each device based on the difference between a target amount of energy or power and a measured amount of energy or power supplied to the device prior to the current time period; selecting (S702) at least one device in decreasing order of energy or power deficit, whereby priority is given to devices having the largest energy or power deficit or the smallest energy or power surplus, until the selection of any further devices will cause a total estimated power consumption of the selected devices during the time period to exceed a predetermined maximum power consumption; and supplying (S704) power to the or each selected device during the time period.
摘要:
An electro-thermal ice protection system for an airfoil (10) comprises: a metal foil heater (14) including an integral parting strip (20), the metal foil heater (14) configurable to cover at least a portion of a leading edge (12) of the airfoil (10) with the integral parting strip (20) disposed along an air-stagnation zone of the leading edge (12); and a controller (50) coupled electrically to the metal foil heater (14) for controlling electrical energy from a power source (52) to the metal foil (14) of the heater in accordance with a pulse duty-cycle and for controlling power to the parting strip (20) of the heater to maintain the air-stagnation zone virtually free of ice formation. A method of making an exemplary metal foil heater for use in ice protection of an airfoil comprises the steps of: preparing a sheet of Titanium foil in a rectangular shape having a length substantially greater than a width thereof for covering at least a portion of the leading edge of the airfoil; applying a layer of Nickel material over an area along each width edge of the Titanium foil; applying a layer of Copper material over the Nickel layer along each width edge of the Titanium foil; and attaching conductor wires to the Copper layers at each width edge.
摘要:
A redundant ice management system and method to de-ice and anti-ice an aircraft member (150) is provided. The system comprising a primary ice management sub-system (154) for providing thermal ice management to the aircraft member and a secondary ice management sub-system (172) for providing back-up thermal ice management to the aircraft member (150) in the event of a failure by the primary ice management sub-system (154). The system provides primary and secondary de-ice and anti-ice capabilities to the aircraft member (150) before and during airborne operation.
摘要:
A deicer 100 for attachment to a substructure 102, the deicer 100 comprising skin heating means 101 immediately subjacent an outer skin 104 overlying an apex of a leading edge, and a skin deflection means 103 immediately subjacent the outer skin 104 chordwise aft of the apex. The skin heating means 101 prevents the formation of ice 118 over the apex and the skin deflection means 103 deflects the outer skin 104 to expulse ice 118 formed chordwise aft of the apex. A controller 234 is provided to control the heating and deflection cycles to minimise power consumption of the deicer.
摘要:
A de-icer for a structural member of an aircraft is provided. The de-icer includes first and second heaters having first and second electrically conductive strips, respectively. The first and second conductive strips are configured to form first and second marginal portions, respectively. The first and second heaters are positioned relative to each other such that the marginal portions are overlapped.
摘要:
A system for preventing icing on an aircraft surface includes a plasma actuator which is applied onto an aircraft surface operationally exposed to air and which is arranged for generating at least one plasma discharge (D) for inducing a flow (F) of ionized hot-air particles towards the surface.