摘要:
The present disclosure relates to propellant grain configuration in solid rocket motors. In one embodiment, the propellant grain is a case-bonded, forward- swept, deep finocyl grain offering significant flexibility in tailoring burn surface area regression profiles to meet different performance requirements even while allowing for high propellant volumetric loading densities. The grain comprises of two or more longitudinal fin cavities with forward swept leading edges, circular-patterned about an axial cavity.
摘要:
A catalyzing reactor comprising a reactor entrance and a reactor exit and an internal structure arranged for flowing a reacting medium through the reactor from the reactor entrance to the reactor exit. The reactor structure comprising at least one thin walled reactor channel arranged between the entrance and the exit of the reactor. The channel having a channel wall that includes a catalyst and that defines a flow path, in which channel in use, a catalyzed exothermic reaction takes place in the medium as it flows along the flow path. The at least one channel is looped to have a portion of its flow path that is downstream with respect to the reactor entrance in heat exchanging contact with a portion of a flow path that is that is more upstream with respect to the reactor entrance, so as to transfer heat between a downstream portion of the reacting medium to an upstream portion thereof.
摘要:
A gas turbine engine having a ramburner is disclosed. The ramburner is disposed downstream of a gas turbine engine combustor and receives an engine exhaust flow from the gas turbine engine combustor. The ramburner also accepts a bypass air. Fuel is injected into the ramburner and a combustion reaction is auto- initiated based upon local gas temperatures. No mechanical flame holders need be used. A slidable valve may be used to vary the amount of bypass air into the ramburner. A movable cowl and a plug nozzle form an exit flow path of the gas turbine engine. The movable cowl can be positioned to vary a throat area and exit area of the gas turbine engine based upon the operation of the ramburner, which may be influenced by the amount of bypass air entering the ramburner.
摘要:
The present invention relates to improved rocket engine systems and devices. In one embodiment, an improved rocket engine system includes a propellant source, at least one power source, at least one power source motor, a rocket engine, and at least one pump. The improved rocket engine system may further include at least one of the following: at least one controller, at least one propellant valve, and a propellant pressurizing source. In an additional embodiment, the present invention is a three-dimensional nozzle.
摘要:
A gas turbine engine comprising a combustion chamber (52), a turbine section (16) and a compressor section (12). The turbine section (16) surrounds the combustion chamber (52) and the compressor section (12) surrounds the turbine section (16).
摘要:
A gas turbine engine comprising a combustion chamber section, a turbine section, and a compressor section. The turbine section surrounds the combustion chamber and the compressor section surrounds the turbine section.
摘要:
Die Erfindung betrifft eine Schubdüse für ein Turbofan-Triebwerk eines Überschallflugzeugs, wobei die Schubdüse aufweist: eine Schubdüsenwand (20), einen Strömungskanal (15), der durch die Schubdüsenwand (20) radial außen begrenzt ist, und einen im Strömungskanal (15) angeordneten Zentralkörper (5). Es ist vorgesehen, dass der Zentralkörper (5) über mindestens eine Strebe (31, 32) mit der Schubdüsenwand (20) verbunden ist.
摘要:
Electrically operated propellant thrust assist supplements an airplane's takeoff, landing or inflight maneuvers. Unlike conventional SRM propellants, the burn rate of the electrically operated propellant can be varied via an electrical input and even extinguished by interrupting the electrical to control a secondary thrust profile (e.g., amplitude, transition rates) to fulfill the needs of a given takeoff, inflight or landing maneuver and provide a smooth transition in and out of the maneuver. Multiple pairs of fixed thrusters (opposite sides of the fuselage), a single pair of gimbaled thrusters or a hybrid of fixed and gimbaled thrusters may be configured to provide all such maneuvers. Flight control inputs are passed back and forth through an interface to enable the thrust assist.
摘要:
Dispositif de régulation de débit d'un gaz dans un conduit (1), comprenant un clapet (2) muni d'un actionneur (3), le clapet (2) étant configuré de manière à sélectivement obturer le conduit (1), caractérisé en ce que le déplacement du clapet (2) est piloté par la résultante d'une part de la pression en amont du clapet (2) dans le conduit (1) qui s'exerce sur une surface proximale (21) du clapet (2), d'autre part, d'une pression de pilotage appliquée sur une surface distale (22) du clapet (2), supérieure à la surface proximale (21) du clapet (2), ladite pression de pilotage étant établie dans une chambre d'amplification (31) munie d'une ligne d'alimentation (41) et d'une ligne de vidange (51), l'une desdites lignes d'alimentation (41) ou de vidange (51) ayant un débit fixe, et l'autre ayant un débit variable piloté par une commande (53).