摘要:
engine, the system comprising: first and second fuel pumps each having a pump inlet for collecting fuel from the fuel tank; and a water scavenging line coupling a water inlet to the pump inlet of the first pump. The first pump is configured to pump fuel towards the engine at a higher rate than the second pump, unless the first pump fails. A method of removing water from an aircraft fuel tank, the method comprising collecting water from a pool at the bottom of the fuel tank during take off or climb and feeding the water to an engine of the aircraft.
摘要:
An aircraft control surface failsafe hinge configuration is disclosed. The arrangement comprises a drop link configuration which is adapted to attach a control surface to an aircraft structure where the drop link additionally incorporates a failsafe hinge means which provides a backup hinge connection between the control surface and the aircraft structure to which it is attached. The improved failsafe hinge construction may be applied to any aircraft control surface such as an aileron, elevator, vertical tail plane and the like.
摘要:
A cable routing clip comprises a base for attaching the clip to a structure. At least one cable clamp extends from the base. The, or each, cable clamp comprises a ring of resilient material having a split to enable a cable to be inserted therein. A plurality of fastening means are provided for closing the split or splits to retain a cable therein. Each of the plurality of fastening means is arranged to independently retain a cable in the event of the failure of another of the fastening means.
摘要:
A fuel system comprising: a fuel line coupled to an engine; a fuel pump having an inlet coupled to a fuel tank and an outlet coupled to the fuel line; and a water scavenging system having an inlet for collecting water and an outlet coupled to the fuel line in parallel with the pump. The water scavenging system is powered by the hydraulic action of fuel in the fuel line using for example a venturi arrangement or a motor/pump combination.
摘要:
A method of manufacturing a composite material, the method comprising: growing a layer of reinforcement; and impregnating the layer with a matrix. The reinforcement layer may be formed by a chemical vapour deposition process. The method can be used as an additive layer manufacturing technique to form a component with a desired shape and physical characteristics, or can be used to form a thin sheet material.
摘要:
A method of analyzing a finite element model of an airfoil assembly. The airfoil assembly comprises a main airfoil element and a plurality of control surfaces. The method comprises: generating a loads interface model of the airfoil assembly comprising: data which defines the spatial positions of a set of nodes, and data which associates each node with either the main element or one of the control surfaces. Load data is generated which defines loads acting on the nodes of the loads interface model, and mapped onto a finite element model to produce a loaded finite element model. A stress analysis is then performed on the loaded finite element model, and the finite element model can be refined as a result of the stress analysis.
摘要:
An aircraft comprising a plurality of fuel tanks in each wing is arranged such that each fuel tank is provided with a venting pipe connected to a single venting chamber. The venting chamber is itself located in a central fuel tank located in the wing centre-box and is thus located inwardly of at least two of the fuel tanks. The venting chamber has two venting pipes each being connected via a respective surge tank in each wing to the exterior of the aircraft.
摘要:
A monitor for monitoring gas concentration in an aerospace application is described, one such application being measuring the concentration of oxygen in or next to aviation fuel. The monitor comprises: a substance, the spectroscopic properties of which change when the substance is exposed to the gas; a light source, arranged to irradiate the substance with light; and a photosensor, arranged to detect light from the substance. The substance may be mounted on a solid substrate.
摘要:
Apparatus for indicating loading in a structure having exceeded a predetermined threshold is disclosed in which deformation of a structural element is identified by the torque required to rotate a gauge assembly integrated in the structure.
摘要:
A method and apparatus is disclosed in which an aircraft landing system is at least partly primarily powered by power provided by a ram air turbine (RAT).