摘要:
Système de tuyères pour le contrôle de la trajectoire- d 'un-mobile. Selon l'invention, ledît système comporte une unique paire de tuyères (N1, N2) diamétralement opposées par rapport à l'axe longitudinal (L) du mobile (M), les axes des cols des deux tuyères étant disposés dans ledit plan longitudinal médian horizontal (H) du. mobile et les pavillons desdites tuyères étant décentrés par rapport auxdits cols.
摘要:
A flow control system (22) includes a fuel passage network (34) that has first (36) and second (38) network portions that are in a parallel flow arrangement with each other. A fueldraulic device (40) is located in the first network portion. Operation of the fueldraulic device varies flow through the first network portion. A flow restriction orifice (42) is located in the fuel passage network and is arranged in series with, and upstream of, the fueldraulic device. The flow restriction orifice is operable to generate a pressure differential that varies responsive to the flow through the first network portion. A flow control valve (44) is located in the second network portion. The flow control valve is operable responsive to the pressure differential across the flow restriction orifice to control flow through the second network portion.
摘要:
Mounting assembly for a rocket nozzle (17) for an engine operable in rocket mode, in which the engine combusts stored oxygen and hydrogen, or in air-breathing mode, in which the engine combusts air from the atmosphere and stored hydrogen. A plurality of ducts and pipes (58) are connected to the nozzle to supply fuel and other fluids. In order to allow the nozzle to pivot, the mounting assembly includes flexible couplings (55) on the ducts and pipes about selected pivot points allowing the desired freedom of motion. The flexible couplings are composed of spaced annular elements (51), wherein a partial toroid element (43) connects consecutive pairs of annular elements.
摘要:
Methods and systems for controlling multi-body vehicles with fuel slosh are provided. In a method for stabilizing a vehicle with fuel slosh, a controller for a multi-body assembly is formed by selecting vehicle configuration and velocity as states of a rigid body. Equations of motion are written for the multi-body assembly, and velocity states are determined that are unactuated. A decoupling transformation is defined from the unactuated velocity states. The equations of motion are transformed using the decoupling transformation such that unactuated states are decoupled from actuated states. A slosh state estimator is coupled to the controller such that it is in operative communication with an input to the controller and an output from the controller.
摘要:
Methods and systems for controlling multi-body vehicles with fuel slosh are provided. In a method for stabilizing a vehicle with fuel slosh, a controller for a multi-body assembly is formed by selecting vehicle configuration and velocity as states of a rigid body. Equations of motion are written for the multi-body assembly, and velocity states are determined that are unactuated. A decoupling transformation is defined from the unactuated velocity states. The equations of motion are transformed using the decoupling transformation such that unactuated states are decoupled from actuated states. A slosh state estimator is coupled to the controller such that it is in operative communication with an input to the controller and an output from the controller.
摘要:
A thrust-vectoring rocket motor nozzle includes a forward assembly (102) having a forward shell (118) with a flange (104) configured for connection to a motor and a throat portion (126) opposite the flange. A ball joint sleeve (110) may be disposed proximate the throat portion, and an exit cone assembly (106) may include a ball joint socket (115) configured to mate with the ball joint sleeve to allow movement of the exit cone assembly about one or more axes relative to the forward assembly. A thermal barrier (154) may be disposed in a gap (156) between the forward assembly and the exit cone assembly. The forward assembly may include a throat insulator mechanically locked within the forward shell. Related methods include forming thrust-vectorable rocket motor nozzles. Rocket motors may include such nozzles.
摘要:
Mounting assembly for a rocket nozzle (17) for an engine operable in rocket mode, in which the engine combusts stored oxygen and hydrogen, or in air-breathing mode, in which the engine combusts air from the atmosphere and stored hydrogen. A plurality of ducts and pipes (58) are connected to the nozzle to supply fuel and other fluids. In order to allow the nozzle to pivot, the mounting assembly includes flexible couplings (55) on the ducts and pipes about selected pivot points allowing the desired freedom of motion. The flexible couplings are composed of spaced annular elements (51), wherein a partial toroid element (43) connects consecutive pairs of annular elements.
摘要:
L'engin volant comporte des moyens (4) qui sont aptes à déplacer la tuyère (1), en l'absence de propulsion, pour engendrer des forces inertielles destinées à le stabiliser.
摘要:
Eyeball seals for a gimbaled rocket engines, and associated systems and methods are disclosed. A system in accordance with a particular embodiment includes a rocket body, an engine carried by and movable relative to the rocket body, and a seal assembly. The seal assembly can include a sealing surface carried by one of the rocket body and the engine, and a seal element carried by the other of the rocket body and the engine. The seal element is in contact with the sealing surface. The seal assembly can further include a cylinder and a piston slideably received in the cylinder, with one of the piston and the cylinder carrying the seal element. The cylinder includes ports that are in fluid communication with a region external to the rocket body. Accordingly, pressures external to the rocket body can force the seal element and/or the sealing surface into contact with each other.