摘要:
A propellant tank for storing a liquid propellant A and supplying vapor produced by evaporation of part of the liquid propellant A to an external location comprises a tank body for storing the liquid propellant A, a mesh member arranged inside the tank body to cover a liquid surface of the liquid propellant A to divide an interior of the tank body into a liquid propellant storing area LA and a gas storing area GA by utilizing surface tension of the liquid propellant, and a heater arranged to a gas storing area GA side of the tank body to keep the gas storing area GA at higher temperature than temperature in the liquid propellant storing area LA. The tank body has a propellant inlet open into the liquid propellant storing area LA and a gas outlet open into the gas storing area GA.
摘要:
A crystallization device is for protein crystallization with a small amount of a sample in the liquid to liquid diffusion method. It is easy to fill the device with protein solution and precipitant solution and easy to pick up grown crystals from the device. The device comprises a channel plate made of polydimethylsiloxane (PDMS) and the first and second cover sheets made of polyethylene terephthalate. The channel plate includes at least one elongated channel having one side which extends in the longitudinal direction of the channel, the one side being exposed at the bottom surface of the channel plate. The channel has both ends which communicate with a protein solution inlet and a precipitant solution inlet respectively. The channel also communicates midway with a gel inlet and a vent hole. When picking up grown crystals from the device, the second cover sheet is cut off with a cutter knife so that the channel is exposed.
摘要:
An object of the present invention is to provide a technique of enlarging a stable operating range of an intake in accordance with an operating condition of an engine without using a complicated control system so that a wide operating range of the engine can be covered. In an operation stabilization method for a supersonic intake according to the present invention, an enlarged duct between a cowl and a ramp of the intake is divided by a splitter plate such that an opening angle of the enlarged duct decreases. Further, in the operation stabilization method for a supersonic intake according to the present invention, when the duct is divided by the splitter plate, the splitter plate is disposed such that, from among a cowl side duct and a ramp side duct, cross-section variation in one duct, in which an effect of a flow is larger, is reduced within an allowable range of total pressure loss in the other duct.
摘要:
An annular type gas turbine combustor having a plurality of fuel nozzle assemblies (10) on a circumference includes a pilot nozzle unit (12) for spraying a fuel for diffusive combustion from a pilot outer peripheral nozzle (34) into a combustion chamber (8), a main nozzle unit (14) provided so as to surround the pilot nozzle unit (12) for spraying a fuel for premix combustion, and a flow guide (27) disposed on a downstream side of each of the fuel nozzle assemblies (10) and having a sectional area of a passage for air and air-fuel mixture from each of the fuel nozzle assemblies (10), which gradually increase in a downstream direction.
摘要:
To provide a crawler type traveling device with few rotating wheel mechanisms and equalizing the pressure contacting the ground. A crawler type traveling device comprises a driving wheel driven by a driving axis; idler wheels having axes parallel to that of the driving wheel; and a crawler belt which is spooled around the driving wheel and the idler wheels and travels around the driving wheel and the idler wheels. The crawler belt comprises an inner crawler belt having an engaging structure engaging with the driving wheel, the inner crawler belt being driven by the driving wheel; an outer crawler belt encircling circumferentially the outside of the inner crawler belt; a plurality of elastic members connecting the inner crawler belt to the outer crawler belt; and a plurality of crawler plates mounted to the outer crawler belt, and having lag for engaging with the ground.
摘要:
A shock absorbing apparatus for an aircraft seat that attenuates shock to passengers and crews includes; an airbag 11 being expanded in a plate shape in a state of less than maximum expansion; an upper flat plate 12 arranged on one side of the airbag 11; a lower flat plate 13 arranged on another side of the airbag 11; a gas supply device 15 for supplying a gas to the airbag 11; and a detector sending a signal to activate the gas supply device 15 by a preset condition. The shock is absorbed by expanding the airbag 11 before the shock is applied to the passenger.
摘要:
Dielectric ceramic composition comprising a barium titanate including barium titanate having hexagonal structure as a main component, and an element “M”, an effective ionic radius of the “M” is within ±20% with respect to an effective ionic radius of 12-coordinated Ba2+ or with respect to an effective ionic radius of 6-coordinated Ti4+, an ionic valence of the “M” is larger than that of the Ba or Ti.
摘要:
An electric energy storage apparatus can generate an AC output in a low-loss and low-noise manner without using a DC-DC converter or an inverter. The electric energy storage apparatus comprises: an electric energy storage module group formed by connecting in series electric energy storage modules each comprising one or more electric energy storage elements; a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules; a first switch group comprising switches each in a path connecting a first terminal and a terminal of one of the series-connected electric energy storage modules; and a second switch group comprising switches each in a path connecting a second terminal and a terminal of one of the series-connected electric energy storage modules. The electric energy storage apparatus may perform a switch changeover in the switch groups.
摘要:
A deployable antenna which has a larger aperture diameter by four-side links provided in at least three stages and which includes: six deployment link mechanisms (20) arranged radially from a central shaft so as to support an outer edge portion of a flexible reflector mirror surface; and one deployment driving mechanism (30) arranged at a lower portion of a center of arrangement of the six deployment link mechanisms, for unfolding the six deployment link mechanisms. Each of the six deployment link mechanisms includes a first four-side link (5), a second four-side link (6), and a third four-side link (7) arranged in an order from a position of the central shaft, around which the six deployment link mechanisms are arranged, toward an outer side of the each of the six deployment link mechanisms so that the each of the six deployment link mechanisms is structured to be foldable in three stages.
摘要:
An object of the present invention is to provide a device which detects matter suspended in air, represented by, for example, ice crystals, volcanic ash, in the forward direction of the flight of an aircraft. A method of detecting matter suspended in air of this invention is characterized in that, in airborne Doppler LIDAR using laser light, components of matter subjected to laser light reflection and scattering are remotely measured on a basis of an angular difference in planes of polarization of transmitted light which is laser light radiated into the atmosphere, and received light scattered by matter suspended in air in a remote region.