| Temperature Control Valve Without Moving Parts |
06 MAY 1997 |
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| Authors:
Scott E. Hassan; DEPARTMENT OF THE NAVY WASHINGTON DC
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 | The present invention relates to a temperature control valve having no moving parts. The temperature control valve has a fluid inlet and a fluid outlet. A fluidic amplifier communicates with the fluid inlet and is characterized by a first outlet port for distributing a flow of fluid to an external device such as a heat exchanger. A second outlet port in communication with the fluid outlet, and two control ports. ... |
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| Multiple Ducted Streams with a Periodic or a Steady Supersonic Drive Flow |
12 JAN 1984 |
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| Authors:
L. L. Petrie; A. L. Addy; J. C. Dutton; ILLINOIS UNIV AT URBANA DEPT OF MECHANICAL AND INDUSTRIAL ENGINEERING
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| Fluidics: Basic Components and Applications |
AUG 1983 |
24 pages |
| Authors:
James W. Joyce; HARRY DIAMOND LABS ADELPHI MD
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 | Since its discovery at Harry Diamond Lab. in 1959, fluidics has gradually been developed into a viable technology. This report describes fluidic components and systems now in use or ready for use in many applications. The fluidic technology provides sensing, computing, and controlling functions with fluid power through interaction of fluid streams. Since fluidics can perform these functions without mechanical moving parts that will wear out, it has the advantages ... |
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| Integrated Component Fluidic Servovalves and Position Control Systems |
APR 1983 |
84 pages |
| Authors:
D. N. Wormley; K.-m. Lee; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MECHANICAL ENGINEERING
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| The operating characteristics of fluidic laminar proportional amplifier (+PA's) operating on hydraulic oil have been determined as a function of pressure and temperature. The useful operating range of these elements has been defined for application in multistage gain blocks and summing amplifiers. An operational servovalve constructed from LPA's has been developed and coupled with a fluidic position feedback transducer, summing amplifier and ram to construct a closed loop position control ... |
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| Fluidic Waste Gate. |
07 APR 1981 |
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| Authors:
Stephen M. Tenney; DEPARTMENT OF THE ARMY WASHINGTON DC
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| In the combination of an internal combustion engine, a turbocharger and a waste gate, the improvement is the waste gate which includes a fluidic device having its inlet and outlet connected in parallel with the turbine of the turbocharger and a biasing port responsive to the output of the turbocharger to proportion the fluid flow from the inlet to the outlet between two parallel fluidic paths having a high and ... |
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| Fluidic Element with Substantially Zero Null Off-Set. |
03 MAR 1981 |
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| Authors:
George Mon; DEPARTMENT OF THE ARMY WASHINGTON DC
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| The patent concerns a fluidic element, such as a laminar proportional amplifier or laminar jet rate sensor, whose null off-set is reduced to substantially zero. A plurality of substantially identical thin laminate plates are stacked between a pair of cover plates. Each of the laminate plates has a passage formed therethrough which is formed by fine blanking that is characterized by formation of a die roll. The die roll has ... |
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| Digital Fluidic Output Force Balance Accelerometer. |
16 SEP 1980 |
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| Authors:
James V. Johnston; DEPARTMENT OF THE ARMY WASHINGTON DC
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| A digital fluidic output accelerometer which has a proportional fluid amplifier for balancing forces acting on a mass which is rotatably mounted on air bearing means and has a digital fluidic output which produces digital signals that are proportional to acceleration of the device. (Author) |
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| Two-Axis, Fluidically Controlled Thrust Vector Control System for an Ejection Seat. |
JUL 1980 |
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| Authors:
Robert B. Beale; Robert V. Burton; Norman E. Miller; HONEYWELL SYSTEMS AND RESEARCH CENTER MINNEAPOLIS MN
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| A two-axis, hydrofluidic, thrust vector control (TVC) system was designed to stabilize an ejection seat during the critical rocket burn portion of the trajectory which should reduce the g loads on the crewmember and result in higher trajectories. The dynamic performance of a seat with a fluidic TVC system was analytically evaluated against established ejection seat requirements and physiological limits. This analysis showed that pitch rates were reduced by 60 ... |
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| Development of a Fluidic Gas Concentration Sensor. |
16 JUN 1980 |
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| Authors:
George E. Stevens; Maurice F. Funke; TRITEC INC COLUMBIA MD
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| This document is the final report of a program to design, test, and evaluate the performance of fluidic gas concentration sensing systems and their component parts for monitoring CxHy and H2S on offshore platforms. This program consisted of investigating three major portions of a systems. Gas Sensors, Chemical Processors, Sensor System, Three candidate fluidic sensors (Resistor Bridge Sensor, Vortex Sensor, Jet Edge Resonator Oscillator Sensor) were evaluated for use in ... |
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| Fluidic Interface Means. |
13 MAY 1980 |
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| Authors:
Robert W. Young; Leonard D. Dansbury; DEPARTMENT OF THE NAVY WASHINGTON DC
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| A means for interfacing between low pressure, low flow fluidic circuits and the high pressure, high flow input requirements of fluidic digital thrusters to control the roll, pitch or yaw rate of missiles is provided. Input pressures from the fluidic circuitry cause a fluidic digital amplifier to go to one of its two stable states. The output from the digital amplifier operates one piston in the interface means, causing it ... |
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| Flueric Notch Filter Temperature or Density Sensor. |
08 APR 1980 |
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| Authors:
Francis M. Manion; Tadeusz M. Drzewiecki; Richard M. Phillippi; Charles E. Paras; DEPARTMENT OF THE ARMY WASHINGTON DC
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| The temperature sensors utilize a constant frequency fluidic oscillator to excite resonance tubes, whose frequency response is a function of temperature. The outputs of these sensors control a fluidic amplifier, whose output is rectified and filtered to produce a D.C. fluid signal which is a function of the sensed temperature. Different embodiements utilize resonance tubes excited in phase or 180 deg out of phase to sense the difference between two ... |
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| A Fluidic Voice Communication System and Data Link. |
MAR 1980 |
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| Authors:
Tadeusz M. Drzewiecki; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| This thesis presents a comprehensive dynamic analysis of fluidic laminar proportional amplifiers (LPA) and a subsequent design of a broad-band voice communication system and narrow-band data link that demonstrates the utility of the analysis. Starting from first principles, the governing equations for the lumped parameter representation of the various flow regimes found in an LPA are derived. From these governing equations, in the Laplace domain, equivalent electrical circuits are derived. ... |
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| The Design, Fabrication, and Test of an Electrofluidic Servovalve |
FEB 1980 |
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| Authors:
Maurice F. Funke; Lester K. Pecan; TRITEC INC COLUMBIA MD
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| This report covers the design, fabrication, and testing of a dual input (hydraulic and electric) servovalve using fluidic amplifiers and positive derivative feedback. The design utilized a two-stage gain block to drive a hydraulic actuator. Electrical input signals were converted by a torque motor into mechanical motion of the first-stage flow splitter. Actuator position was fed back to a movable splitter in the second-stage amplifier. Flow to the actuator was ... |
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| Fluidics - Basic Components and Applications. |
SEP 1979 |
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| Authors:
James W. Joyce; Richard N. Gottron; HARRY DIAMOND LABS ADELPHI MD
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| Since its discovery at Harry Diamond Laboratories in 1959, fluidics has gradually been developed into a viable technology. This report provides a description of fluidic components and systems now in use or ready for use in many applications. The fluidic technology provides sensing, computing, and controlling functions with fluidic power through the interactions of fluid streams. Since fluidics can perform these functions without mechanical moving parts that will wear out, ... |
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| Development of Partial Channel Flow for Arbitrary Input Velocity Distributions Using Boundary-Fitted Coordinate Systems. |
APR 1979 |
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| Authors:
Leslie R. Hester; Joe F. Thompson; MISSISSIPPI STATE UNIV MISSISSIPPI STATE
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| This report summarizes the results of the attempted solution of the class of problems associated with partial channel flows using a numerical technique of boundary-fitted coordinate systems. (Author) |
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| A Fluidic Adaptive Damper - Breadboard Design, Fabrication and Test |
JAN 1979 |
76 pages |
| Authors:
D. R. Cooper; R. K. VanAusdal; M. M. Steele; S. M. Tenney; BENDIX CORP NORTH HOLLYWOOD CA ELECTRODYNAMICS DIV
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| The purpose of this development effort was to achieve a practical implementation of a fluidic composite valve to replace the compression valve of a conventional shock absorber to improve vehicle control and performance. The effort was to result in the delivery of two breadboard adaptive fluid vibration dampers (shock absorbers) for Government evaluation. Program results include the sizing, design, packaging, fabrication and testing of several modifications of a compact, inertially ... |
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| Fluidic Element with Substantially Zero Null Off-Set. |
04 AUG 1978 |
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| Authors:
George Mon; DEPARTMENT OF THE ARMY WASHINGTON DC
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| A fluidic element, such as a laminar proportional amplifier or laminar jet rate sensor, whose null off-set is reduced to substantially zero. A plurality of substantially identical thin laminate plates are stacked between a pair of cover plates. Each of the laminate plates has a passage formed therethrough which is formed by fine blanking that is characterized by formation of a die roll projecting from one side of the plate. ... |
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| Investigation of a Low-Cost Servoactuator for HYSAS. |
JUL 1978 |
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| Authors:
James O. Hedeen; HONEYWELL INC ST LOUIS PARK MN AVIONICS DIV
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| This document covers the design and testing of a fluidic input servoactuator to perform the series servoactuator function in a helicopter hydrofluidic stability augmentation system (HYSAS). The servoactuator consists of a two-stage fluidic amplifier cascade driving a conventional spool valve that positions a spring-centered cylinder. Simplicity and minimum cost commensurate with essential servoactuator performance was the design goal. A breadboard model servoactuator was designed, fabricated, and bench tested to evaluate ... |
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| Development of a Fluidic Oxygen Regulator. |
JAN 1977 |
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| Authors:
Frederick A. Moynihan; HONEYWELL SYSTEMS AND RESEARCH CENTER MINNEAPOLIS MN
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| The object of this study was to build and test a breadboard of an automatic oxygen regulator using fluidic techniques. Goals set for the regulator were that it should have oxygen economy, be rugged, simple, and self-powered. Feasibility of controlling the oxygen enrichment following a specified cabin pressure schedule was demonstrated. Features of the mixture control circuit were a fluidic function generator, a fluidic pulse duration modulator and an ejector ... |
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| Development of a Hydrofluidic Vernier Rocket Control System for Ejection Seat Stabilization. |
DEC 1976 |
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| Authors:
R. V. Burton ; R. B. Beale; HONEYWELL INC MINNEAPOLIS MINN SYSTEMS AND RESEARCH CENTER
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| A feasibility demonstration model of a fluidic thrust vector control (FTVC) system was designed, fabricated, and tested for pitch stabilization of ejection seats using the STAPAC vernier rocket. The control system includes a rate sensor, amplifier, attitude memory, and a position-controlled hydrofluidic servoactuator. The measured dynamic response of the control system closely matched the theoretical specifications for stable attitude control of the seat. The hardware was tested on a hydraulic ... |
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| Analysis and Experiment on an Electrical to Fluidic Interface with no Moving Parts. |
07 JAN 1976 |
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| Authors:
Paul L. Jacobs; J. C. Dunaway; ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL ALA GUIDANCE AND CONTROL DIRECTORATE
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| This report contains the results of experimental performance evaluation on an electrical to fluidic interface device with no moving parts. Scale factors, frequency response, null shift, power consumption, linearity, and signal-to-noise ratio were measured before and after a 10,000 'g' gun firing. It was concluded that the device has too low a frequency response for most control applications, and had an unacceptable null shift after the gun firing. The reason ... |
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| Fluidics Technology. |
JAN 1976 |
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| Authors:
J. M. Kirshner; ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT PARIS (FRANCE)
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| This AGARDograph is based on material presented at a symposium on fluidics held by the Harry Diamond Laboratories of the United States Army. It largely represents a selection of material from the proceedings of this symposium, edited in the interests of a wider audience. The object of the compilation is to overview in concise form the present state of research, technology and applications of fluidics. An opening section on sensors ... |
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| Fluidic Analog Ring Position Device. |
23 DEC 1975 |
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| Authors:
Gerald E. Kovalenko; Charles E. Woods; DEPARTMENT OF THE NAVY WASHINGTON D C
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| The invention relates to a ring position sensor which was developed to measure ring-switch position during flight of a projectile. |
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| Laminar Fluidic Multiplier. |
16 DEC 1975 |
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| Authors:
Robert L. Woods; DEPARTMENT OF THE ARMY WASHINGTON D C
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| The patent relates to a fluidic multiplier which comprises a proportional fluidic amplifier operated in the laminar region. The gain of the amplifier is proportional to the power jet pressure, thereby providing an output signal which is the product of the input signal and the supply pressure. A preconditioning and buffering circuit is also disclosed for linearizing and isolating the multiplier from other circuitry. |
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| Production Suitability of an Electroform Conductive Wax Process for the Manufacture of Fluidic Systems. |
NOV 1975 |
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| Authors:
Robert Lewis; Walter Posingies; Burton Scott; HONEYWELL INC MINNEAPOLIS MINN GOVERNMENT AND AERONAUTICAL PRODUCTS DIV
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| This is a three-phase program to determine and demonstrate the production suitability of the Electroform Conductive Wax process in conjunction with conventional production processes for the manufacture of fluidic systems. During this phase, Phase I, an integrated amplifier-manifold hydrofluidic stability augmentation system using the Electroform Conductive Wax process was successfully designed, fabricated, and qualification tested, and a pilot production line using the Electroform Conductive Wax process was defined. The pilot ... |
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| Fluidic Gyro Torquer. |
22 APR 1975 |
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| Authors:
Aubrey Rodgers; Rayburn K. Widner; ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL ALA GUIDANCE AND CONTROL DIRECTORATE
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| The objective of this program is to develop fluidic torquer technology for missile guidance and control seeker type gyros. This report presents the technology in the development of a proportional/digital fluidic torquer and the associated electrofluid converter. The conceptual design feasibility and hardware performance characteristics are confirmed by the evaluation material. The cost-effectiveness of the torquer design is established by the use of off-the-shelf items and design simplicity. High-g survival ... |
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| A Fluidic Fuel Control for Small Gas Turbine Engines. Development of AiResearch Fluidic Fuel Control 710374-4 for AiResearch Gas Turbine Engine Model GTPR36-61A. |
10 MAR 1975 |
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| Authors:
R. S. McCarty; H. R. Gamble; AIRESEARCH MFG CO OF ARIZONA PHOENIX
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| This is the final report of a program conducted by AiResearch and funded by the U.S. Army Mobility Equipment Research and Development Center to develop a fluidic fuel control for a small recuperated gas turbine engine. The basic functions provided by the control include engine starting, speed governing, and exhaust gas temperature limiting. Analysis, fabrication, and testing of the various fluidic circuits employed to generate the required control functions are ... |
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| Fluidically Controlled Pneumatic to Mechanical Converters. |
19 NOV 1974 |
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| Authors:
Happy H. Unfried; John F. Cogger; DEPARTMENT OF THE NAVY WASHINGTON D C
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| The patent relates to a device for converting the output of a fluid amplifier into rotational mechanical energy. Ratchet teeth are arranged upon both internal ends of a cylinder for engagement with ratchet teeth provided on both faces of a disc axially movable within the cylinder. A shaft, connected at one end to the central portion of the disc and at its other end to a diaphragm, transmits to the ... |
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| Propagation of Sinuous Disturbances in Two-Dimensional and Confined Laminar Submerged Jets. |
31 AUG 1974 |
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| Authors:
F. T. Brown; R. C. Sekhar; LEHIGH UNIV BETHLEHEM PA DEPT OF MECHANICAL ENGINEERING AND MECHANICS
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| The dynamic response of laminar submerged two-dimensional and face-plate bounded jets to lateral disturbances is investigated. In particular, the propagation of sinous disturbances, including those generated from a oscillatorily pivoting origin such as approximated in analog fluidic amplifiers, is described largely in terms of the propagation velocity of the disturbances and the spacial growth rate of the envelope of the inotion. Two-dimensional jets are analyzed over a broad range of ... |
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| Miniaturized High Speed Controls for Turbine Engines (Fabrication and Test) |
AUG 1974 |
205 pages |
| Authors:
D. G. Burnell; M. A. Cole; T. B. Morrison; A. H. White; R. D. Zagranski; COLT INDUSTRIES INC WEST HARTFORD CT CHANDLER EVANS CONTROLS DIV
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| This report summarizes the design and development of control components and high speed fuel pump technology for future drone, missile and RPV gas turbine engines. The hardware was designed for installation on an existing engine to provide a vehicle for control mode demonstration and evaluation testing. The developed hardware includes a fluidic/linear variable differential transformer delta P/P airflow sensor, a radiation pyrometer for sensing turbine blade temperature, three pressure transducers ... |
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| Reliability Testing of Laminar Jet Fluidic Elements. |
01 JUN 1974 |
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| Authors:
W. J. Westerman; R. E. Wright; MCDONNELL DOUGLAS ASTRONAUTICS CO TITUSVILLE FLA
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| Laminar jet fluidic elements were evaluated for the Harry Diamond Laboratories as a supplement to Contract No. DAAG39-72-C-0001. An evaluation of results is presented and compared to performance of turbulent elements tested under the basic contract. A comprehensive photographic presentation of contamination buildup is included. The program encompassed a total of 24 elements investigated of which 16 were proportional and 8 were bistable. |
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| Analysis of Switching Times in the Coanda-Effect Relay, |
01 APR 1974 |
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| Authors:
A. B. Andreev; S. L. Treskunov; ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA
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| A theory based on turbulent jet entrainment and quasisteady flow assumed is presented for predicting switching times in a turbulent reattachment fluidic amplifier. Conditions of hydrodynamic analogy for analysis of steady and nonsteady regimes of full-sized fluidic relays and large-scale relay models are discussed. (Author) |
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| Hydrofluidic Fly-By-Tube Primary Flight Control System. |
FEB 1974 |
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| Authors:
Robert F. Helfinstine; Holger C. Kent; HONEYWELL INC MINNEAPOLIS MN GOVERNMENT AND MILITARY PRODUCTS DIV
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| This report contains the results of a study relating to the development of hydrofluidic (fly-by-tube) flight control systems which can be used as backup systems to fly-by-wire controls or as primary controls on certain aircraft or other remote-power-assisted control systems. Backup system requirements were defined, and alternate system mechanization concepts were evaluated. Design details of the basic system elements were provided, and a system analysis was conducted to predict accuracy, ... |
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| Hydraulic-To-Pneumatic Power Supply for Aircraft Fluidic Systems. |
FEB 1974 |
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| Authors:
R. S. McCarty; J. T. Cox; AIRESEARCH MFG CO OF ARIZONA PHOENIX
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| The program activities encompassed analysis, development, design, fabrication, and test of a hydraulic-to-pneumatic power supply suitable for use in supplying the total power required for any of a number of different aircraft fluidic systems. The unit uses a hydrofluidic oscillator to drive a double-ended reciprocating bellows compressor. The input is Type MIL-H-5606 hydraulic fluid at a supply pressure of 3,000 psi. The pneumatic output is at a discharge pressure of ... |
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| Fluidic Reliability Program. |
21 DEC 1973 |
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| Authors:
MCDONNELL DOUGLAS ASTRONAUTICS CO TITUSVILLE FLA
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| Many claims have been made, some extravagantly, regarding fluidic system reliability. For the most part these claims have been substantiated qualitatively in many applications. However, in the past, quantitative methods have not been available to either predict reliability or to design accelerated failure experiments. The report describes work performed over a two year period with the purpose of developing an accelerated testing method and a method of predicting system life. ... |
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| Research Report No. 16 University Park, Pa. July, 1973, |
JUL 1973 |
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| Authors:
Gary V. Smith; W. D. Mangieri; Huan C. Tran; R. Yaros; PENNSYLVANIA STATE UNIV UNIVERSITY PARK SYSTEMS AND CONTROLS LAB
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| The Systems and Controls Laboratory encourages graduate research and development on engineering systems, with emphasis on bridging the gap between theory and practice. Much of the work involves mathematical and computer modeling and analysis. A major part of this work devoted to advanced engineering in aerospace systems. |
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Reports by Keyword(s)
FLUIDIC AMPLIFIERS
