Evaluation of a fluidic oscillator as a molecular-weight sensor of gases
Fluidic oscillator molecular weight of flowing mono- and polyatomic gases, discussing frequency dependence on pressure drop and temperature
Gorland, S. H.↗
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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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A fluidic low-speed air-speed indicator
Fluidic parallel flow low airspeed indicator for V/STOL instrumentation tested in wind tunnel
Miner, R. J.↗
Fluidic wind sensor research leading to a flight test model Final report
Flow visualization study of flyable fluidic low speed wind sensor
Neradka, V. F.↗
Design, development, fabrication and delivery of fluidic accelerometers Final report
Design optimization and production of fluidic accelerometer for angular rate measurements
Ringwall, C. G.↗
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.↗