摘要:
An engine having at least one stage of propeller rotor blades, and a load, the at least one stage being associated with electrical generation means to generate electricity for the load. The load is switchable into a high load state in the event of an overspeed signal from the rotor blades. Also a method of controlling rotor overspeed of an engine, characterised by the steps of: i. detecting an overspeed signal from the at least one stage, and ii. switching the load into a high load state to apply torque to the at least one stage to counteract the overspeed.
摘要:
The invention relates to a shock absorber assembly (200) for a non-streamlined blower comprising: an extension collar (210) having a first interface (201) suitable for being rigidly attached on a first module of the blower; a connector support housing (220) comprising: a third interface (222) suitable for being rigidly attached on a second module of the blower; and a fourth interface (221) allowing a mechanical connection to be made between the housing and a second interface of said collar; a plurality of elastic means (230) arranged between the collar and the housing; a flange element (240) rigidly attached on the third interface of the housing comprising a stop (243) bearing on the collar in such a way as to define a space (Z1) between the collar and the flange element; the elastic means are arranged so that a residual clearance (J1) exists between the flange element and the housing.
摘要:
Aircraft (1, 1') with rear mounted engines (2, 2'), comprising a vertical tail plane (3) and a horizontal tail plane (4), in which the engines (2, 2') are mounted on top of the horizontal tail plane (4), such that the horizontal tail plane (4) comprises an inner fixed part (5) attached to the fuselage (8) of the aircraft (1, 1'), the inner fixed part (5) comprising an elevator (7), and two outer movable parts (6), each one of the outer movable parts (6) being located at each side end of the horizontal tail plane (4) which is furthest away from the fuselage (8) of the aircraft (1, 1'), such that both the inner fixed part (5) and the outer movable parts (6) are at least partially subjected to the flow coming from the engines (2, 2') when they are in use.
摘要:
The invention relates to a device for controlling a propeller, having variable-pitch blades, of a turboprop engine, including a first hydromechanical device (10) for controlling the pitch of the blades of the propeller and a second hydromechanical device (20) for controlling the speed of rotation of the propeller, characterised in that said device includes a single electromechanical actuator (30) including a movable actuator member (31, 36) mechanically connected both to said first hydromechanical device (10) for controlling the pitch, in order to manage the pitch setpoint, and to said second hydromechanical device (20) for controlling the speed, in order to manage the speed setpoint.
摘要:
BLADE SAFETY MECHANISM FOR OPEN ROTOR ENGINE SYSTEM A method and apparatus for safely handling an undesired blade event (225) in an open rotor engine system (208). In one illustrative embodiment, an occurrence of an undesired blade event (225) in an open rotor engine system is detected. Electrical energy (238) is allowed to flow into a conductor (230) embedded in the blade (218) in response to the undesired blade event (225). The conductor (230) is vaporized when the electrical energy (238) flowing through the conductor (230) heats the conductor to a temperature above a selected threshold.
摘要:
A fuselage (36, 74, 144) mounted gas turbine engine installation (30, 70, 110), the installation (30, 70, 110) comprising at least one propeller stage (46, 82, 122) and a gas turbine core (50, 92, 132) arranged in use to drive the propeller stage (46, 82, 122). The core (50, 92, 132) is external to the fuselage (36, 74, 144) and the rotational axes of the core (50, 92, 132) and propeller stage (46, 82, 122) are offset with respect to each other.
摘要:
A propulsion engine 20 for an aircraft comprises a first fan 30 having a set of first blades 32 and a second fan 40 having a set of second blades 42. There is provided a first angular pitch adjustment mechanism 50 coupled to the first set of blades 32, a second angular pitch adjustment mechanism 60 coupled to the second set of blades 42 and an actuation means 70 coupled to the first angular pitch adjustment mechanism 50. The first and second angular pitch adjustment mechanisms 50, 60 are coupled together such that when the actuation means generates an output, the angular pitch of each of the first blades 32 and each of the second blades 42 changes.
摘要:
A simple, robust and systematic control solution for open rotor control with a differential gearbox is disclosed. When the two counter rotating rotors of a CROR engine are conditioned by the differential gearbox, the two rotors speeds are coupled for given input torque. The solution provided by the current disclosure mathematically decouples these two rotors by transforming the original individual actuator input and speed output into differential & average input and output. Because the newly formed control system representation of the plant has decoupled input/output mapping, it follows that the simple SISO control can be applied. Furthermore, the current control solutions allow a simple and well-coordinated speed phase synchronizing among the four rotors on a two-engine vehicle.