Refine Your Search

Topic

Author

Affiliation

Search Results

Technical Paper

Aircraft-Propeller Development and Testing Summarized

1934-01-01
340105
An outline of the development of the control-lable-pitch propeller follows, together with a description of the present-type of hydro-controllable propeller now in use throughout the world. ...In conclusion, the paper deals with methods of testing propellers to assure their safety in service.
Technical Paper

EDC Development and Testing for the Space Station Program

1986-07-14
860918
Information presented in this paper documents the results of the development effort, endurance testing performed and identifies future enhancements that will provide further power, weight and volume savings and enhanced maintainability. ...Progressive development of Electrochemical Carbon Dioxide (CO2) Concentration (EDC) technology by Life Systems under the sponsorship of the National Aeronautics and Space Administration (NASA) has resulted in subsystem hardware and Control and Monitor Instrumentation (C/M I) that are ideally suited for application to the Space Station program. ...Progressive development of Electrochemical Carbon Dioxide (CO2) Concentration (EDC) technology by Life Systems under the sponsorship of the National Aeronautics and Space Administration (NASA) has resulted in subsystem hardware and Control and Monitor Instrumentation (C/M I) that are ideally suited for application to the Space Station program. The development effort has simplified the mechanical assembly to where only seven Orbital Replacement Units (ORUs), including two integrated components, are required to perform the process function.
Technical Paper

Development and Testing of Membrane Biological Wastewater Processors

1999-07-12
1999-01-1947
This paper reports on the development and testing of membranebased biological reactors and addresses the processing of planetary and International Space Station (ISS) waste streams. ...Ground-based laboratory and closed-chamber human tests have demonstrated the ability of microbial-based biological processors to effectively remove carbon and nitrogen species from regenerable life support wastewater streams. ...Application of this technology to crewed spacecraft requires the development of gravity-independent bioprocessors due to a lack of buoyancy-driven convection and sedimentation in microgravity.
Technical Paper

Cascade Distillation Subsystem Development Testing

2008-01-29
2008-01-2195
A five-stage prototype of the subsystem was built, delivered and integrated into the NASA JSC Advanced Water Recovery Systems Development Facility for development testing. Key performance criteria identified for the subsystem design are the production of recovered water at a rate of 5 kg/hr maximum and specific power consumption less than approximately 290 W-hr/kg. ...The system, currently in test, is planned to be challenged with a variety of ersatz and human-generated waste streams representative of pretreated urine, early lunar outpost, and transit mission wastewater. ...This paper provides a description of the CDS technology, a summary of the current CDS test activities, and data on the system's performance to date. In addition, the current plan for continued maturation of the CDS technology is discussed.
Technical Paper

The Costs/Reliability Relationships of Development Testing and Demonstration

1971-02-01
710452
Emphasis is placed on the decisionmaking process that is required when formal reliability and maintainability (R&M) demonstration tests are imposed. The statistical aspects of demonstration tests are examined and related to the program manager's informational requirements. ...This paper explores the relationships between the costs of developmental testing and the derived benefits in reliability. The analysis quantifies this relationship for the components of the dynamic system of a specific future helicopter. ...Distinctions are drawn between test costs related to reliability requirements and those that are not related. Emphasis is placed on the decisionmaking process that is required when formal reliability and maintainability (R&M) demonstration tests are imposed.
Technical Paper

Development Testing of The L-1011 Independent Landing Monitor

1971-02-01
710443
A new, completely independent monitor (capable of operation through Category IIIc weather condition) for use with automatic landing systems, is undergoing development by Lockheed for possible use in L-1011 aircraft. Following intensive analysis, a Ka band airborne radar was selected to provide pilot confidence through independent monitoring of the L-1011 (1) dual-dual, fail operative, automatic landing system's performance. ...Lockheed's airborne flying test bed (CV-240) program has so far provided evidence that the Independent Landing Monitor concept has a definite future in commercial automatic landing applications under reduced visibilities.
Technical Paper

Development and Testing of a Lightweight Fireproof Composite Structure

1990-09-01
901981
This paper addresses the design and testing of a simple uninsulated composite sandwich structure fabricated from relatively low cost materials which can withstand a 2000°F 15 minute FAA fire test. ...This paper addresses the design and testing of a simple uninsulated composite sandwich structure fabricated from relatively low cost materials which can withstand a 2000°F 15 minute FAA fire test. The materials used can be configured to almost any complex shape using standard layup techniques.
Technical Paper

Development and Testing of a ESM/PCM Heat Sink

2014-09-16
2014-01-2202
To meet pulse power mode component cooling application needs, we developed, fabricated and tested a concept to use energy storage material and phase change material to enhance the heat dissipation of a conventional heat sink. ...To meet pulse power mode component cooling application needs, we developed, fabricated and tested a concept to use energy storage material and phase change material to enhance the heat dissipation of a conventional heat sink. Test results demonstrated the ESM/PCM heat sink has unique thermal performance. Under the same working condition, the peak temperature of ESM/PCM heat sink is 1.5°C lower than of a conventional heat sink.
Technical Paper

Development and Testing of the Advanced Lightweight Radiator Development Unit (ALRDU)

2008-06-29
2008-01-2151
The aforementioned experience was used to determine key CEV radiator design requirements used by Ball Aerospace and XCA for the ALRDU development. Testing of the ALRDU was performed at NASA Johnson Space Center (JSC) in an integrated thermal vacuum system test. ...The panel was tested at both steady state and transient conditions. The transient test points were completed to mimic a low lunar orbit thermal environment. ...The Advanced Lightweight Radiator Development Unit (ALRDU) is a composite radiator panel built for the Advanced Thermal Exploration Technology Development Project.
Technical Paper

Development Testing of the New Generation of Large Jet Aircraft

1969-02-01
690675
The new generation of large transport aircraft require the utilization of improved development test techniques discussed in this paper to ensure timely and efficient development cycles. ...Although the development test program on the C-5, largest of today's airplanes, has not been completed, a comprehensive accumulation of significant data in all test phases and extensive experience in managing and conducting the testing of these huge transports have been obtained. ...Although the development test program on the C-5, largest of today's airplanes, has not been completed, a comprehensive accumulation of significant data in all test phases and extensive experience in managing and conducting the testing of these huge transports have been obtained.
Technical Paper

Human and Robotic Enabling Performance System Development and Testing

2005-07-11
2005-01-2969
The research focused on development and testing of communication components, robotic command and control interfaces, electronic displays, EVA navigation software and hardware, and EVA lighting. ...The funded research was a 12-month effort culminating in a field test with NASA personnel.
Technical Paper

Development and Testing of a Vacuum Distillation Subsystem for Water Reclamation from Urine

1999-07-12
1999-01-1993
This paper reviews the development and testing of the distillation subsystem of water regeneration system from urine (WRS-UM) based on a method of vacuum distillation with a rotary multistage vacuum distiller and a thermal pump. ...This paper reviews the development and testing of the distillation subsystem of water regeneration system from urine (WRS-UM) based on a method of vacuum distillation with a rotary multistage vacuum distiller and a thermal pump. Test results show that with relatively small power consumption the subsystem using rotary three-stage vacuum distiller provides high rates of heat and mass transfer processes, useful productivity and distillate quality. ...The conducted tests have confirmed that it will be efficient to use the presented system as a part of WRS-UM system in Russian segment of the International Space Station.
X