Abstract:
An engine unit for an aircraft including a turboprop engine and its device for mounting on to a wing surface. The device includes a rigid structure and a mechanism for fastening the turboprop engine on to this structure. The fastening mechanism includes six mutually independent hydraulic systems, each one exclusively dedicated to the transfer, to the rigid structure, of forces exerted respectively according to one of the six degrees of freedom of movement. Each hydraulic system includes at least one hydraulic jack with a piston attached to one of the two elements, i.e. either the turboprop engine or the rigid structure, together with a cylinder housing the piston and attached to the other of the two elements.
Abstract:
A front attachment device for fastening a turbojet engine to an aircraft fixing strut. The attachment device is adapted to absorb the turbojet engine thrust loads, and includes a top bracket, and a lower bracket. A thrust load absorption vector results from a first convergence point of primary vectors passing through primary fixing points that couple the top bracket to the lower bracket and a second convergence point of secondary vectors passing through secondary fixing points that couple the lower bracket to the turbojet engine. The thrust load absorption vector transmits the turbojet engine thrust loads to the fixing strut, and extends along a longitudinal axis of the turbojet engine.
Abstract:
This invention relates to a mounting system (1) inserted between an aircraft engine and a rigid structure of a strut, comprising a thrust resistance device (20) comprising a spreader beam (28) provided with two lateral lower ends (32a) placed such that a horizontal plane passes through them and through a longitudinal axis of the engine. Moreover, the device (20) is also fitted with two fittings (44) each comprising a forward end (44a) through which the said horizontal plane also passes and fixed to a forward part of a central casing (22), and an aft end (44b) connected to one of the ends (32a). Furthermore, the spreader beam is connected to the forward mount and to the rigid structure through its upper end (30b).
Abstract:
A heat exchanger comprising a main heat exchange housing, a cooling air inlet line and a hot air inlet line to bring a cooling airflow and a hot airflow in the main housing. A heat pre-exchanger is disposed upstream from the main housing, the heat pre-exchanger being able to be crossed by the cooling airflow and the hot airflow prior to the main housing. The invention also relates to a propulsion unit and an aircraft comprising such a heat exchanger.
Abstract:
A propulsion unit comprises a turbojet engine and a thermal exchanger, situated above the turbojet engine. The turbojet engine comprises a regulation device to regulate an air flow-rate in a cooling air lead-in conduit conveying a stream of cooling air into a thermal exchanger, The regulation device regulates the air flow-rate upstream with respect to the cooling air lead-in conduit
Abstract:
A pod for an aircraft including a cowling, an engine housed in the inner volume of the cowling, an annular channel circulating a secondary thrust flow arranged between the engine and the cowling, and at least one thrust reverser for forming a reverse flow from the secondary thrust flow circulating in the annular channel. The thrust reverser including a plurality of doors provided in the rear part of the cowling, so as to form a trailing edge of the cowling. The thrust reverser can include means for actuating the doors such that at lease one actuating means actuates two adjacent doors and at least one door is actuated by two actuating means.
Abstract:
This invention relates to a mounting system (1) inserted between an aircraft engine and a rigid structure of a strut, comprising a thrust resistance device (20) comprising a spreader beam (28) provided with two lateral lower ends (32a) placed such that a horizontal plane passes through them and through a longitudinal axis of the engine. Moreover, the device (20) is also fitted with two fittings (44) each comprising a forward end (44a) through which the said horizontal plane also passes and fixed to a forward part of a central casing (22), and an aft end (44b) connected to one of the ends (32a). Furthermore, the spreader beam is connected to the forward mount and to the rigid structure through its upper end (30b).
Abstract:
A system for attaching an engine to the structure of an aircraft, such as a sail wing aircraft is disclosed. The system includes an upper beam which is firmly fixed at its front end to a first frame mounted on the aircraft structure, and firmly fixed at its median part to a second frame located to the rear of the first frame. The engine is hooked beneath the upper beam. The system is orientated in relation to a longitudinal axis X, a transverse axis Y and a vertical axis Z. Two front engine attachment points are arranged symmetrically on either side of the vertical median plane of the engine. The front attachment points include a shaft which is inclined relative to the Y-direction and to the Z-direction so that they bear the forces along the longitudinal direction and forces which are inclined relative to the Z-direction and Y-direction.
Abstract:
A propulsion unit comprises a turbojet engine and a thermal exchanger, situated above the turbojet engine. The turbojet engine comprises a regulation device to regulate an air flow-rate in a cooling air lead-in conduit conveying a stream of cooling air into a thermal exchanger, The regulation device regulates the air flow-rate upstream with respect to the cooling air lead-in conduit.
Abstract:
This invention relates to a mounting system (100) inserted between an aircraft engine (2) and a rigid structure (4) of an attachment strut (6) fixed under a wing (8) of this aircraft, the system including a forward mount (16), an aft mount (18) and a device (20, 120, 220) for resisting thrusts generated by the engine (2). The system also comprises additional means (23) for opposing the longitudinal bending of the engine (2), these additional means (23) being designed to resist loads only starting from a predetermined deformation of this engine (2). According to the invention, the additional means (23) comprise at least one connecting rod (32) capable of opposing longitudinal bending of the engine (2), each connecting rod (32) being connected firstly to the rigid structure (4) of the strut (6) and secondly to a fan casing (26) of the engine (2), so that it is only stressed starting from the predetermined deformation of this engine (2).