Design, development, fabrication and delivery of fluidic accelerometers Final report
Design optimization and production of fluidic accelerometer for angular rate measurements
Ringwall, C. G.↗
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Results for “Fluidics”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Study of fluidic roll control for sounding rocket applications
Fluidic roll control for Aerobee rocket vehicle
Keltz, W. L.↗
Applicability of fluidic controls to a Rankine cycle automotive engine Final report
Fluidic controls for automotive engine examined by Rankine cycle performance with water, CP-34, and freon TF and investigation for boiler and feed pump control criteria
Fisher, E. J.↗
Fluidic proportional thruster for SPARCS 4
Design, development, fabrication, and acceptance test results for two fluidic proportional thrusters for use in SPARCS 4
Honda, T. S.↗
Plasma fluidic hybrid display Patent
Plasma-fluidic hybrid display system combining high brightness and memory characteristics
Hilborn, E. H.↗
Fluidic power control systems
Pneumatic and hydraulic fluidic power control systems, discussing moving part position servos and cold gas reaction systems
Rose, R. K.↗
An electrical-to-fluidic signal converter using heated curved walls
Electro-pneumatic transducer for conversion of electrical into fluidic signals, using temperature dependence of laminar gas jet deflection angle in flow along heated curved wall
Rehsteiner, F. H.↗
Closed-cycle power supply for fluidic control systems
Power supply utilizes small quantities of two-phase fluid of suitable thermodynamic properties for circulation in a capillary-pumped heat transfer loop. Fluid is vaporized in evaporator, passed through fluidic system load, condensed, pumped by multistage capillary pump, and returned to the evaporator.
Fiet, O.↗
Interconnections for fluidic circuits
Circuit elements are grouped on functional basis in rectangular two-dimensional planar arrays or modules. Another interconnection method brings all connections out to module edge. For smaller fluidic circuits, manifold and interconnections are fabricated as single blocks. Advantages of methods are given.
Mangion, C.↗
Fluidic device for measuring constituent masses of a flowing binary gas mixture
Device consists of fluidic humidity sensor and specially designed flow calorimeter. Calorimeter provides readings of gas stream temperature rise produced by measured amount of heat that is dissipated into gas stream, and humidity sensor is used to obtain continuous calculation of specific heat capacity of gas mixture.
Prokopius, P. R.↗
A fluidic device for measuring constituent masses of a flowing binary gas mixture
A continuous reading mass flow device was developed to measure the component flow of a binary gas mixture. The basic components of the device are a fluidic humidity sensor and a specially designed flow calorimeter. These components provide readings of gas mixture ratio, mixture heat capacity, heat dissipated by the calorimeter and the gas temperature rise across the calorimeter. These parameter values, applied in the general definitions of specific heat capacity and the heat capacity of a gas mixture, produce calculated component flow rates of the mixture being metered. A test program was conducted to evaluate both the steady state and dynamic performance of the device.
Prokopius, P. R.↗
Use of fluidic oscillator to measure fuel-air ratios of combustion gases
A fluidic oscillator was investigated for use in measuring fuel-air ratios in hydrocarbon combustion processes. The oscillator was operated with dry exhaust gas from an experimental combustor burning ASTM A-1 fuel. Tests were conducted with fuel-air ratios between 0.015 and 0.031. Fuel-air ratios determined by oscillator frequency were within 0.001 of the values computed from separate flow measurements of the air and fuel.
Riddlebaugh, S. M.↗
Research on fluidics, valves, and proportional amplifiers
Research and development being conducted at the Systems and Controls Laboratory is reviewed. Static characteristics (supply, input, transfer, output, and noise characteristics) of laminar proportional amplifiers were investigated. Other topics discussed include velocity profiles for laminar fluidic jets, speed control systems employing a jet pipe valve, and power amplification with a vortex valve.
Source record↗
Experimental design studies and flow visualization of proportional laminar-flow fluidic amplifiers
The effects of certain parameter variations on the performance characteristics of laminar, proportional, jet-deflection fluidic amplifiers were studied. The matching and staging of amplifiers to obtain high pressure gain was included, but dynamic effects were not. The parameter variations considered were aspect ratio, setback, control length, splitter distance, receiver-duct width, width of center-vent duct, and bias pressure. Usable pressure gains of 19 per stage were achieved, and 5 amplifier stages were integrated to yield an overall pressure gain of 2,000,000.
Hellbaum, R. F.↗
Fluidic-oscillator gas analyzer
Fluidic oscillator identifies hazardous single, and multicomponent gases. Since oscillator has no moving parts, it is highly reliable.
Faber, E. A.↗
Variable Control Port for Fluidic Control Device
Volume and velocity of control flow independently adjustable. In proposed device rotatable D-shaped control sector throttles down control port or open it completely and set to any intermediate control-port crosssectional area. Although adjustment affects volume and control-port head loss, volume and velocity controlled independently by also adjusting fluidsupply pressure. Allows adjustment to wider range of control conditions and ability to maximize control efficiency. Fluidic control theory suggests possibility of improvement in control ratio of at least 2:1 over conventional devices.
Collins, Earl R., Jr.↗
Fluidic angular velocity sensor
A fluidic sensor providing a differential pressure signal proportional to the angular velocity of a rotary input is described. In one embodiment the sensor includes a fluid pump having an impeller coupled to a rotary input. A housing forming a constricting fluid flow chamber is connected to the fluid input of the pump. The housing is provided with a fluid flow restrictive input to the flow chamber and a port communicating with the interior of the flow chamber. The differential pressure signal measured across the flow restrictive input is relatively noise free and proportional to the square of the angular velocity of the impeller. In an alternative embodiment, the flow chamber has a generally cylindrical configuration and plates having flow restrictive apertures are disposed within the chamber downstream from the housing port. In this embodiment, the differential pressure signal is found to be approximately linear with the angular velocity of the impeller.
Berdahl, C. M.↗