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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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At least 73 records · Page 4
All sourcesNASA NTRSDOE OSTI
NASA NTRS1976

Development of a multi-disciplinary ERTS user program in the state of Ohio

The author has identified the following significant results. A preliminary comparison of the land use maps derived from high altitude photography and imagery generated from land use CCT's shows considerable correlation of data. Most land use features are best identified on LANDSAT data taken over a full year, showing the effects of the four seasons. It appears that the most cost effective and timely way of providing land use data is to use LANDSAT data for identifying 75 to 90 percent of land use categories, using temporal data. For surface mining, close examination of LANDSAT, Skylab, and aircraft data covering the same area where linears were found seems to indicate that the type of resolution characteristic of LANDSAT data results in a better definition of linears of one or more miles. Long line linears were found in the vicinity of known gas production areas in Ohio.

Baldridge, P. E.↗
NASA NTRS1977

Development of a multi-disciplinary ERTS user program in the state of Ohio

The author has identified the following significant results. Although the analysis of the results of presently - used methodology has showed inadequate correlation between the land use change and the various socio-economic factors, a system of analysis was produced that will aid in the future work in this area pointing out the adequacy of the land use data for producing models of desired accuracy. This testing methodology is applicable to other LANDSAT/land use interpretation systems.

Baldridge, P. E.↗
NASA NTRS1977

Development of a multi-disciplinary ERTS user program in the state of Ohio

The author has identified the following significant results. The State of Ohio has an inventory in machine compatible form, such that, information about the land use in Ohio may be tailored to the requirements of the user and may be easily modified and updated as future needs arise.

Baldridge, P. E.↗
NASA NTRS1977

Development of a multi-disciplinary ERTS user program in the state of Ohio. Volume 1: Executive summary

The author has identified the following significant results. A current uniform land inventory was derived, in part, from LANDSAT data. The State has the ability to convert processed land information from LANDSAT to Ohio Capability Analysis Program (OCAP). The OCAP is a computer information and mapping system comprised of various programs used to digitally store, analyze, and display land capability information. More accurate processing of LANDSAT data could lead to reasonably accurate, useful land allocations models. It was feasible to use LANDSAT data to investigate minerals, pollution, land use, and resource inventory.

Baldridge, P. E.↗
NASA NTRS1985

Multi-mesh gear dynamics program evaluation and enhancements

A multiple mesh gear dynamics computer program was continually developed and modified during the last four years. The program can handle epicyclic gear systems as well as single mesh systems with internal, buttress, or helical tooth forms. The following modifications were added under the current funding: variable contact friction, planet cage and ring gear rim flexibility options, user friendly options, dynamic side bands, a speed survey option and the combining of the single and multiple mesh options into one general program. The modified program was evaluated by comparing calculated values to published test data and to test data taken on a Hamilton Standard turboprop reduction gear-box. In general, the correlation between the test data and the analytical data is good.

Boyd, L. S.↗
NASA NTRS1974

Multi-kw dc power distribution system study program

The first phase of the Multi-kw dc Power Distribution Technology Program is reported and involves the test and evaluation of a technology breadboard in a specifically designed test facility according to design concepts developed in a previous study on space vehicle electrical power processing, distribution, and control. The static and dynamic performance, fault isolation, reliability, electromagnetic interference characterisitics, and operability factors of high distribution systems were studied in order to gain a technology base for the use of high voltage dc systems in future aerospace vehicles. Detailed technical descriptions are presented and include data for the following: (1) dynamic interactions due to operation of solid state and electromechanical switchgear; (2) multiplexed and computer controlled supervision and checkout methods; (3) pulse width modulator design; and (4) cable design factors.

Berkery, E. A.↗
NASA NTRS2021

Risk Reduction of Orion Multi-Purpose Crew Vehicle (MPCV) Program Government-Furnished Equipment for Environmental Control and Life Support (ECLS)

The NASA Engineering and Safety Center (NESC) was requested to conduct technical risk-reduction activities for safety-critical government-furnished environmental control and life support (ECLS) equipment for the Multi-Purpose Crew Vehicle Program. These items include the post-landing anomaly gas monitor, the in-flight anomaly gas monitor, the emergency breathing mask, the 144-hour in-suit survival capability, the portable fire extinguisher, the smoke eater, and the post-landing carbon dioxide control system. This document contains the outcome of the NESC assessment.

Environmental Control and Life Support↗
NASA NTRS1980

Development of a multi-media crew-training program for the terminal configured vehicle mission simulator

This paper describes the work being done at the National Aeronautics and Space Administration's (NASA) Langley Research Center on the development of a multi-media crew-training program for the Terminal Configured Vehicle (TCV) Mission Simulator. Brief descriptions of the goals and objectives of the TCV Program and of the TCV Mission Simulator are presented. A detailed description of the training program is provided along with a description of the performance of the first group of four commercial pilots to be qualified in the TCV Mission Simulator.

Rhouck, J. A.↗
NASA NTRS1980

Development of a multi-media crew-training program for the Terminal Configured Vehicle Mission Simulator

This paper describes the work being done at the National Aeronautics and Space Administration's (NASA) Langley Research Center on the development of a multi-media crew-training program for the Terminal Configured Vehicle (TCV) Mission Simulator. Brief descriptions of the goals and objectives of the TCV Program and of the TCV Mission Simulator are presented. A detailed description of the training program is provided along with a description of the performance of the first group of four commercial pilots to be qualified in the TCV Mission Simulator.

Houck, J. A.↗
NASA NTRS2005

Evaluation of the Advanced Subsonic Technology Program Noise Reduction Benefits

This report presents a detailed evaluation of the aircraft noise reduction technology concepts developed during the course of the NASA/FAA Advanced Subsonic Technology (AST) Noise Reduction Program. In 1992, NASA and the FAA initiated a cosponsored, multi-year program with the U.S. aircraft industry focused on achieving significant advances in aircraft noise reduction. The program achieved success through a systematic development and validation of noise reduction technology. Using the NASA Aircraft Noise Prediction Program, the noise reduction benefit of the technologies that reached a NASA technology readiness level of 5 or 6 were applied to each of four classes of aircraft which included a large four engine aircraft, a large twin engine aircraft, a small twin engine aircraft and a business jet. Total aircraft noise reductions resulting from the implementation of the appropriate technologies for each class of aircraft are presented and compared to the AST program goals.

Golub, Robert A.↗
NASA NTRS1972

Checkout/demonstration application program for the SEL 840MP Multi-Processing Control System: Version 1 (MPCS/1)

The characteristics of the application program were developed to verify and demonstrate the SEL 840MP Multi-Processing Control System - Version I (MPCS/1). The application program emphasizes the display support and task control capabilities. The application program is further intended to be used as an aid to familization with MPCS/1. It complements the information provided in the MPCS/1 Users Guide, Volume I and II.

Anderson, W. F.↗
DOE OSTI2025

Search for Neutral Current Disappearance at the SBN Program

● The Short Baseline Neutrino (SBN) Program is a multi-detector oscillation program located at Fermilab. ● The program has world-leading sensitivity to neutrino oscillations and will be able to make a definitive rejection or acceptance of the sterile neutrino hypothesis.

Pallat, Nicole [Minnesota U.]↗
NASA NTRS1997

Thermal Response and Ablation Programs for TPS Sizing Computation

The computer programs developed at NASA Ames Research Center for TPS sizing computation have been applied to many NASA's space missions, such as Mars Pathfinder, StarDust, Mars 2001, DS-II, and Saturn Entry Probe. These computer programs include FIAT (Fully Implicit Ablation and Thermal Response Program, MAT (Multi-component Ablation Thermochemistry Program), TPSX (Thermal Protection Systems Expert & Material Properties Database), and TPSGui (Thermal Protection Systems Graphical User Interface). For most planetary missions, the aerothermodynamics and material response are strongly coupled; thus a closed loop iteration technique between the FIAT and CFD (Computational Fluid Dynamics) codes has been developed to obtain the high fidelity bench mark TPS sizing solution. The computer codes and predictive methods are presented and discussed in detail.

Chen, Y. K.↗
NASA NTRS1993

The importance of cost considerations in the systems engineering process

This paper examines the question of cost, from the birth of a program to its conclusion, particularly from the point of view of large multi-center programs, and suggests how to avoid some of the traps and pitfalls. Emphasis is given to cost in the systems engineering process, but there is an inevitable overlap with program management. (These terms, systems engineering and program management, have never been clearly defined.) In these days of vast Federal budget deficits and increasing overseas competition, it is imperative that we get more for each research and development dollar. This is the only way we will retain our leadership in high technology and, in the long run, our way of life.

Hodge, John D.↗