Development of a Weld Quality Monitor
Development of automatic quality control device for measuring welded joints
Etzel, J. G.↗
SEARCH · Engineering Papers
Results for “CONTROL DEVICE”
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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Applications of hydraulic components
Techniques and applications of fluid-control devices and hydraulic components
Source record↗
A flow-control valve without moving parts
Design and operation of valveless flow control device used on Applications Technology Satellites
Owens, W. L., Jr.↗
Phase change solidification phenomena for thermal control Annual summary report, 21 Nov. 1968 - 31 Dec. 1969
Solidification effects on performance and suitability of phase-change materials in thermal control devices
Golden, J. O.↗
Miniature grinder for solid specimens
Machine grinds fines to appropriate micron sizes with the least biological trauma and greatest degree of reproducibility. Device controls destruction of material so that recovery of microorganisms is as great as possible and protects operation and grinding products from exogenous contamination.
Houser, C. P.↗
Acoustic liner feasibility program, design guide
Guidelines for designing combustion stability control devices
Source record↗
Controllers Patent
Hand controller operable about three respectively perpendicular axes and capable of actuating signal generators for attitude control devices
Miller, D. P.↗
Control apparatus for applying pulses of selectively predetermined duration to a sequence of loads Patent
Pulse duration control device for driving slow response time loads in selected sequence including switching and delay circuits and magnetic storage
Veillette, L. J.↗
Space thermal control development
The results of experimental investigations on a number of various phase change materials (PCMs) and PCMs in combination with metals and other materials are reported. The evaluations include the following PCM system performance characteristics: PCM and PCM/filler thermal diffusivities, the effects of long-term thermal cycling, PCM-container compatibility, and catalyst effectiveness and stability. Three PCMs demonstrated performance acceptable enough to be considered for use in prototype aluminum thermal control devices. These three PCMs are lithium nitrate trihydrate with zinc hydroxy nitrate catalyst, acetamide, and myristic acid. Of the fillers tested, aluminum honeycomb filler was found to offer the most increase in system thermal diffusivity.
Hoover, M. J.↗
Hybrid water immersion simulation of manual IVA performance in weightlessness
A description is given of the development, tests, and analysis of a manual simulator. The simulator was developed to test mass handling and translation under weightlessness conditions by a test subject. The system is composed of a hybrid simulator with a combination of water immersion and mechanical, Peter Pan, simulation. The concept operates on the equivalence principle, with the subject and the cargo remaining quasi-stationary. Movement is effected through a moving device controlled through force by the subject. Motion response is determined through computations of the inertial movement under such conditions.
Loats, H. L., Jr.↗
Aerodynamic characteristics of a swept augmentor wing
A brief outline of augmentor wing research is presented and is followed by a discussion of large scale wind tunnel test results for a swept augmentor wing configuration. The results show that the augmentor wing can be applied to high speed swept wing designs with little adverse effect on either the basic performance of the augmentor or the longitudinal characteristics, including maximum lift and stall. Three lateral control devices were shown to be effective and ground effect was measured for several complete aircraft configurations.
Koenig, D. G.↗
Acoustic processing method for MS/MS experiments
Acoustical methods in which intense sound beams can be used to control the position of objects are considered. The position control arises from the radiation force experienced when a body is placed in a sound field. A description of the special properties of intense sound fields useful for position control is followed by a discussion of the more obvious methods of position, namely the use of multiple sound beams. A new type of acoustic position control device is reported that has advantages of simplicity and reliability and utilizes only a single sound beam. Finally a description is given of an experimental single beam levitator, and the results obtained in a number of key levitation experiments.
Whymark, R. R.↗
Aerodynamic characteristics of a swept augmentor wing
A brief outline of augmentor wing research sponsored by Ames Research Center is presented and is followed by a discussion of large-scale wind-tunnel test results for a swept augmentor wing configuration. The results showed that the augmentor wing could be applied to high-speed swept wing designs with little adverse effect on either the basic performance of the augmentor or the longitudinal characteristics, including maximum lift and stall. Three lateral control devices were shown to be effective and ground effect was measured for several complete aircraft configurations.
Koenig, D. G.↗
Thermal control subsystem design of a Saturn/Uranus atmospheric entry probe for descent missions to 20 bars.
A study of scientific probes to explore the atmospheres of Saturn and Uranus to depths of between 2 and 30 bars is summarized. The study assessed configuration tradeoffs of recommended exploratory payloads, determined the types and quantities of the thermal control devices required, and evaluated thermal structural details and viable mission alternatives. These results indicated that a vented probe design with an environmental pressurization system for the first 2.5 bars of descent would satisfy the requirements for missions to either Saturn or Uranus to depths of approximately 20 bars. Parametric atmospheric descent thermal analyses are discussed and the effect of worst-case atmospheric models and navigational arrival uncertainties on mission performance are presented.
Webb, C. M.↗
Design criteria monograph for actuators and operators
Instrumentation for actuators and operators includes electrical position-indicating switches, potentiometers, and transducers and pressure-indicating switches and transducers. Monograph is based on critical evaluation of experiences and practices in design, test, and use of these control devices and instruments in operational space vehicles.
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The Apollo spacecraft: A chronology. Volume 2: 8 November 1962 - 30 September 1964
A chronology of the Apollo spacecraft development and production program is presented. The subjects discussed are: (1) defining contractural relations, (2) developing hardware distinctions, and (3) developing software ground rules. Illustrations, drawings, and photographs are used extensively to supplement the technical writing. Descriptions of life support systems, communication equipment, propulsion systems, control devices, and spacecraft components are provided.
Morse, M. L.↗
Wind tunnel tests of a full-scale model of a light twin-engine airplane with fixed auxiliary airfoil or leading-edge slot
An investigation has been conducted by means of wind-tunnel tests of a full-scale mockup of a light twin-engine airplane configuration to determine the effects of outboard partial-span slots and of auxiliary airfoils ahead of the leading edge of the wing in improving aerodynamic characteristics at high angles of attack. Both of the stall-control devices gave considerable improvement in high angle-of-attack characteristics with the auxiliary airfoil giving the more favorable results, but neither device performed as well as might have been expected.
Fink, M. P.↗