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128results about "Reactive propulsion thrust device" patented technology

Powder propellant-based space propulsion device

Disclosed is a powder propellant-based space propulsion device using a powder propellant having high density and excellent handleability. The powder propellant-based space propulsion device comprises a powder-propellant storage container for storing a powder propellant, a powder-propellant attracting surface for attracting the powder propellant thereto through an opening of the powder-propellant storage container and attractively holding the attracted powder propellant thereon, powder-propellant transfer means for transferring the held powder propellant to a release position for releasing the powder propellant, and propulsive-energy supply means for energizing the transferred powder propellant to release the powder propellant from the powder-propellant attracting surface, toward a downstream side thereof as a propulsive jet, while accelerating the powder propellant in a direction approximately perpendicular to the powder-propellant attracting surface at said release position. The powder-propellant transfer means is designed to move the powder-propellant attracting surface in such a manner that a powder-propellant holding area of the powder-propellant attracting surface is returned to a position adjacent to the opening of the powder-propellant storage container in a repetitive manner.
Owner:JAPAN AEROSPACE EXPLORATION AGENCY

Contra-rotating outer framework water-air dual-purpose engine

The invention discloses a contra-rotating outer framework water-air dual-purpose engine. The engine mainly structurally comprises a supporting frame, an oil electric pipeline, a front thrust bearing, a peripheral bearing, a radome, an inner duct, an outer duct, a gas compressor, a ring-shaped combustion chamber, a worm wheel, a rear thrust bearing, a convergent tail spray tube, a central duct, an inner rotor, an outer rotor, a blade tongue-and-groove, a fan, an engine cover, a power transmission circuit, a conductive slide ring, an oil conveying pipeline, a convergent channel, a rotary joint, a metal fuel cavity, a metal-water reaction combustion chamber and a fan stator blade. The gas compressor and the worm wheel of the engine are not provided with a stator blade, and an outer frame rotor and an inner rotor are in counter rotating in an air working state, so that the gas compressor and the worm wheel can realize counter rotating, the absolute rotation speed of the rotor is lowered when the engine efficiency is improved, the axial dimension of the engine is shortened and the structure weight is reduced. When the engine works in water, the ring-shaped combustion chamber does not work, the inner and outer rotors are static, and power is produced by the metal-water reaction combustion chamber, so that water-spraying propulsion is realized.
Owner:NANCHANG HANGKONG UNIVERSITY

Liquid ammonia propulsion system for pico-satellite or nano-satellite

The invention discloses a liquid ammonia propulsion system for a pico-satellite or a nano-satellite. The liquid ammonia propulsion system comprises a digital signal processing circuit and a micro-propulsion device, wherein the micro-propulsion device comprises a propulsion system storage tank used for storing liquid ammonia, a thruster communicated with the propulsion system storage tank, and a solenoid valve mounted between the propulsion system storage tank and the thruster; the digital signal processor comprises an information monitoring module, a control switch module and an interface communication module; the information monitoring module is used for monitoring the current operation state of the propulsion system; the control switch module is used for controlling the solenoid valve so as to turn on or turn off the thruster; the interface communication module is used for feeding back information on the current operation state of the propulsion system to the satellite and receiving remote control commands sent by the satellite. The liquid ammonia propulsion system has the characteristics of small size, light weight, low power consumption, high specific impulse, simple structure, short development period, high safety performance, multi-functional integration, space plug and play function, universal applicability to 10 kg-magnitude pico-satellites and nano-satellites, and the like.
Owner:ZHEJIANG UNIV

Micro array type colloid propeller

The invention relates to a micro colloid propeller, in particular to a micro array type colloid propeller. The micro array type colloid propeller realizes micromation and microthrust, solves the problems of difficult control of liquid supply and jetting of a nozzle of a jetting pole and the like and comprises the jetting pole, a drawing pole and a glass supporting frame body; a base plate of the jetting pole is etched with a plurality of tubular nozzles which are arranged in row, and is also etched with a plurality of strip etching grooves which are parallel; each strip etching groove is internally provided with a row of tubular nozzles; the bottom of each etching groove and the top part of the tubular nozzle are sputtered with an aluminium layer; one end of each etching groove respectively provided with a terminal communicated with the aluminium layer at the bottom of the groove; the inside of a liquid delivery channel of the tubular nozzle is processed into a porous silicon structure by adopting HF etching technique; the drawing pole is paliform, and strip grid seams thereof face the etching grooves of the jetting pole. The micro array type colloid propeller has the advantages of stable performance, high aligning precision, convenient processing and easy control for liquid supply and jetting and the like and can realize the purpose of controlling jetting of the nozzle by batches.
Owner:ZHONGBEI UNIV

Particle accelerator space engine

The invention provides two methods of propulsion for vertical and horizontal aerospace flight. Both methods manipulate the mass of a moving particle stream to achieve a desired result. In vertical propulsion, the invention circulates matter, within the confine of a machine, such that a portion of particle speed, which is perpendicular to gravity, is greater than the magnitude of velocity required for circular orbit of the planet, so as to develop radial acceleration relative to the planet center, creating a vertical force, associated with the mass of the particle stream times the radial acceleration, thereby generating vertical thrust. This methodology shall be referred to as “Gyroscopic Lift”. This invention also provides an additional method of horizontal propulsion. In horizontal propulsion, the invention may alternate acceleration and deceleration of matter, as it travels in a circulatory system, so as to create changing centripetal acceleration, and a directional imbalance of forces, thereby developing an outlet to be employed in horizontal thrust. As particles accelerate to the rear during the first ½ cycle an opposite but equal reaction causes forward horizontal propulsion. As particles decelerate in the 2nd ½ cycle, the opposition to slowing down causes forward horizontal propulsion. On port and starboard sides, forces causing particle stream acceleration or deceleration are balanced so as to cancel each others effect. This method of alternating acceleration and deceleration shall be referred to as “Impulse Propulsion”. Although the particular embodiment shown utilizes particles traveling perpendicular to gravity, it should not be concluded that this is the only arrangement possible. Whenever a particle has a component of velocity perpendicular to gravity in excess of circular orbit velocity, it is suitable to provide some measure of vertical thrust. Thus many particle accelerator designs utilizing this feature are feasible for the present invention. As an example, a particle accelerator whose axis of rotation is not aligned with the z axis should provide vertical lift and possibly other precession types of motion for a vehicle. As an alterative embodiment of this invention it provides some measure of gyroscopic lift that may be harnessed. Another example; If the circulatory path of the doughnut is comprised of a shape other than a circle it may increase the potential effect of impulse propulsion, but reduce gyroscopic lift efficiency. A shape comprised of two half circle accelerators, linked into a circulatory pattern by two parallel linear accelerators, would increase the potential horizontal thrust of impulse propulsion. Such is an alternative embodiment of this invention. Thus the invention embraces all space engines which utilize the principles of Gyroscopic Lift, or Impulse Propulsion. Obviously, many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced other than as specifically described.
Owner:FOSTER JOHN P

Mobile object with force generators

A mobile object being a vehicle of any type includes a plurality of force generators, enclosed in a hermetically sealed generator chamber filled with a pressurized gas, and a plurality of engines. Each force generator being a lift device comprises a rotor, which includes a shaft, a rotary shell having an open bottom, and a means supporting the gas in relative equilibrium inside said rotary shell, and a stationary means closing said open bottom of said rotary shell. The specific coordination of the members of said force generator supports the gas on the lower surfaces of the force generator in relative equilibrium and hence produces the maximum difference between the pressures of the gas acting on the lower and upper surfaces of said force generator, i.e. the maximum lift. The force generators, enclosed in said generator chamber, produce the self-action force of said mobile object in accordance with the self-action principle of a solid-fluid body that has been established recently. By controlling the direction of the shafts and angular velocities of the force generators the mobile object can accelerate momentarily in any direction in space. The enclosure of the force generators in the generator chamber makes the self-action force of the mobile object independent of outer environment surrounding it. Any source of energy can be used for self-propulsion of the mobile object due to the direct conversion of the rotational energy into the self-action force without the use of material jets, reactive or external forces.
Owner:MINH VU XUAN

Propellant self-driven device of MEMS electrospray thruster

A propellant self-driven device of an MEMS electrospray thruster comprises a storage box (1), a connecting device (2), a porous emitter electrode (3), an insulating alignment frame (4), a mounting silicon frame (5) and an extraction electrode (6), wherein propellant liquid is stored in the hollow part inside the storage box (1); the insulating alignment frame (4) is mounted at the upper part of the storage box (1); the extraction electrode (6) is mounted on the insulating alignment frame (4) through the mounting silicon frame (5) mounted at the edge of the extraction electrode (6); the porousemitter electrode (3) and the connecting device (2) are mounted between the extraction electrode (6) and the storage box (1); the porous emitter electrode (3) is connected to the upper part of the storage box (1) through the connecting device (2); and there is a potential difference between the porous emitter electrode (3) and the extraction electrode (6). The propellant self-driven device of theMEMS electrospray thruster solves the problem that an original electrospray propulsion system needs to be equipped with special propellant supply management devices such as a micro pump and a micro valve, and that the thrust precision is largely limited by the propellant supply precision of the micro valve and other mechanisms.
Owner:BEIJING INST OF CONTROL ENG
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