70 results about "Reaction control system" patented technology

The invention discloses a variable cascade temperature regulation biomass charring device. The device mainly comprises a feeding unit, a segmented pyrolysis unit, an oil-gas separation unit, a secondary catalytic cracking unit and a waste heat reuse unit. The whole process is regulated through a reaction control system, and the continuous performing of the pyrolytic reaction is guaranteed through continuous sealed feeding and discharging. According to the pyrolysis portion, a variable cascade segmented heating principle is used, so that multi-stage regulation among different heating sections of a pyrolyzing furnace is achieved, and the requirement for different heating speeds during pyrolysis is met. Meanwhile, the pyrolysis gas condensation separation technology, the secondary catalytic cracking tar removing technology, the charcoal continuous cooling technology, the high-temperature pyrolysis gas waste heat reuse technology, the internal and external combined heating pyrolysis charring technology and the like are integrated. The device is applicable to pyrolysis charring of various biomasses in different conditions.

The invention provides an electrochemical levelling and polishing processing method with nanometer precision and a device thereof, relating to an electrochemical etching levelling and polishing technology. The device is provided with a cutter with nanometer levelling precision, an electrochemical reaction control system capable of accurately controlling the thickness of an etching levelling agent liquid layer in nanoscale, a solution circulating device, a solution thermostat and an automatic control system. The method is implemented by the following steps: preparing the cutter with nanometer levelling precision to serve as an electrochemical working electrode, and placing the cutter at the bottom of a container together with a workpiece; immersing the cutter in a solution, starting an electrochemical system, generating the etching levelling agent on the surface of the cutter, compressing the etching levelling agent liquid layer on the cutter surface into a nanoscale thickness, and regulating and controlling the thickness of the etching levelling agent liquid layer; driving a tri-dimensional micro-drive device, leading the cutter to approach the workpiece gradually, and regulating and controlling the distance and parallelism between the workpiece surface and the cutter; and leading the cutter to move toward the workpiece surface, and enabling the constraint etching levelling agent liquid layer on the cuter surface to contact with the workpiece surface until the whole workpiece is etched, leveled and polished.

The invention provides a method and a device for preparing copper powder by intensified electrolysis, and belongs to the technical field of metal electrolysis under special conditions. The method adopts hypergravity fields to intensify the electrolysis of the copper powder. The hepergravity electrolyzer comprises a centrifuge, an electric signal transmission system, an electrolyic bath system and an electrochemical reaction control system. The hypergravity fields are generated in a test cup by utilizing the rotation of a rotor of the centrifuge, and the copper powder electrolysis reaction is carried out in the high gravity fields; an electrolytic reaction signal is transmitted by a conductive ring of the electric signal transmission system; and the electrolytic copper powder reaction is carried out in the electrolytic bath. The method and the device have the advantages of greatly improving the current efficiency of the electrolytic copper powder and lowering the particle size of the copper powder; moreover, the electrolysis under a high current density is realized, and the particle size of the copper powder is reduced.

A fuel depot in space is provided. The fuel depot has a collapsible housing with a guidance, navigation, and control (GNC) system, a power management system, and a reaction control system (RNC). Connected to the housing are a plurality of fuel tanks that are connected via collapsible rods. The fuel tanks have pipe systems that are in communication with a plurality of pumps to transfer fuel from the tanks through a refueling arm and into a spacecraft during refueling.

A method for predicting faults in an aircraft thrust reverser system, the method includes receiving a position signal, determining a variation in the position signal relative to a reference position, predicting a fault in the thrust reverser based on the variation, and providing an indication of the predicted fault.

Methods and apparatuses are provided for managing a state of a platform. The methods and apparatuses comprise receiving a desired state for the platform. The methods and apparatuses comprise receiving the state of the platform. The methods and apparatuses comprise selecting a combination of thrusters from a plurality of thrusters to operate. The combination of thrusters is selected to adjust the state of the platform to the desired state. The methods and apparatuses operate the combination of thrusters to adjust the state of the platform to the desired state.

Pulsed detonation engines (PDEs) are adapted for use in reaction control systems (RCS), such as thrusters for orbital correction and control (e.g., for earth-orbiting satellites), divert thrust generation and control for space-based interceptor devices, and for missile trajectory correction and motion control. According to one aspect of the invention, PDEs are adapted for motion control of so-called “kill vehicles,” which are small devices, typically launched from satellites, for strategic missile defense.

The invention discloses a production system and process for preparing ultra-high molecular weight polyethylene by a batch method slurry process, wherein the system consists of a polymeric kettle, a catalyst hopper, an activating agent hopper, a condensing liquid separation tank, a condenser, a circulation fan, a flash evaporation kettle, an ethylene feeding flow rate control system, a propane feeding system, a reaction control system, a propylene feeding system and an activating agent metering feeding system. The process comprises a raw and auxiliary material feeding flow, a polymerization flow, a recovery processing flow and a product processing flow. The production system and the process have the advantages that the work procedures of filtering, drying, refining and the like required bya conventional ultra-high molecular weight polyethylene slurry process using conventional solvents such as hexane, solvent oil, butane and the like can be avoided; the production cost is reduced.

A reaction control system controls a reactive force to be applied to an operating device operated by a driver of a vehicle. The system includes a device for measuring a steering speed of steering of the operating device; a device for measuring a steering torque applied to the operating device; and a reactive force correcting device for correcting the reactive force in a manner such that the corrected reactive force increases at least when the measured steering speed is zero, and that the higher the measured steering torque, the higher the corrected reactive force is. The reactive force correcting device may correct the reactive force in a manner such that the higher a speed of the vehicle, the higher the corrected reactive force is. A non-effectivity range of the steering torque in which the corrected reactive force is not influenced by the steering torque may be defined.

An unmanned aircraft configured to fall or crash in a controlled and safe manner. The unmanned aircraft includes a drive system to thrust the unmanned aircraft during a flight, and a reverse thrust system to reverse thrust the unmanned aircraft during a landing. The unmanned aircraft further includes a controller operationally coupled to the reverse thrust system, and a detector to detect and notify to the controller that the unmanned aircraft is in an uncontrolled situation during the flight. The controller is adapted to activate the reverse thrust system in order to reverse thrust the unmanned aircraft in-flight upon notification from the detector that the unmanned aircraft is in an uncontrolled situation.

The present invention is a constant volume rocket motor that uses a non-detonating constant-volume, bipropellant combustion process in pulse-mode operation. Opening and closing of the combustion chamber exhaust outlet is controlled by an actuated reciprocating thrust valve (RTV). Fuel enters the combustion chamber at low pressure with the RTV closed. The valve opens after or during combustion when combustion chamber pressure is at or near maximum. The motor has applications in reaction control systems and attitude control systems in spacecraft.

Pulsed detonation engines (PDEs) are adapted for use in reaction control systems (RCS), such as thrusters for orbital correction and control (e.g., for earth-orbiting satellites), divert thrust generation and control for space-based interceptor devices, and for missile trajectory correction and motion control. According to one aspect of the invention, PDEs are adapted for motion control of so-called “kill vehicles,” which are small devices, typically launched from satellites, for strategic missile defense.