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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 379 records · Page 21
All sourcesNASA NTRSDOE OSTI
NASA NTRS1972

Shuttle free-flying teleoperator system experiment definition. Volume 1: Executive summary

The applicability and utility of a free-flying teleoperator system were evaluated to support future earth orbital missions, specific emphasis on the early missions of the space shuttle. In-flight experiments and tests were specified, which will provide sufficient experience and data applicable to the development of future operational systems. The difinition of a useful early experimental system is presented, which will be checked out and used with early shuttle missions.

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NASA NTRS1972

In-space propellant systems safety. Volume 1: Executive summary

Safety problems connected with in-space propellant logistics operations are considered. Safety considerations resulting from the system safety analysis in the trade studies and evaluations of alternate operating concepts in the systems operations analysis are presented.

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NASA NTRS1972

In-space propellant logistics. Volume 1: Executive summary

The study addresses the systems and operational problems associated with the transport, transfer, and storage of cryogenic propellants in low earth orbits. The safety problems connected with in-space propellant logistics operations are also considered.Correlation between the two projects was maintained by including safety considerations, resulting from the system safety analysis, in the trade studies and evaluations of alternate operating concepts in the systems operations analysis.

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NASA NTRS1972

Orbital operations study. Executive summary

A summary of the analyses of the orbital operations study is presented. Objectives, scope of study, and technical documentation format are discussed. A summary of the mission analyses including generic mission models, element pair interactions, and interfacing activities are presented. The analyses associated with each interfacing activity are also summarized. Significant implications derived during the course of the study on the EOS orbiter, space tug, RAM, and MSS are indicated.

Hogan, L. R.↗
NASA NTRS1972

Manned space flight nuclear system safety. Volume 1: Executive summary. Part 2: Space shuttle nuclear system safety

The nuclear safety integration and operational aspects of transporting nuclear payloads to and from an earth orbiting space base by space shuttle are discussed. The representative payloads considered were: (1) zirconium hydride-Brayton power module, (2) isotope-Brayton power module, and (3) small isotope power systems or heat sources. Areas of investigation also include nuclear safety related integration and packaging as well as operational requirements for the shuttle and payload systems for all phases of the mission.

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NASA NTRS1972

Meteor research program, executive summary

A framework statement is provided of three problems together with brief comments on advances made during the course of this research. The problems discussed are: (1) generic relationships among comets, asteroids, meteorites, and meteoroids; (2) meteor physics; and (3) meteoroid hazard and the spatial distribution of meteoroid material. A summary of results is included.

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NASA NTRS1972

Advanced missions safety. Volume 1: Executive summary

Three separate studies were performed under the general category of advanced missions safety. Each dealt with a separate issue, was a self-contained effort, and was independent of the other two studies. The studies are titled: (1) space shuttle rescue capability, (2) experiment safety, and (3) emergency crew transfer. A separate discussion of each study is presented.

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NASA NTRS1972

Study 2.5 final report. DORCA computer program. Volume 4: Executive summary report

The functions and capabilities of the Dynamic Operational Requirements and Cost Analysis Program are explained. The existence and purpose of the program are presented to provide an evaluation of program applicability to areas of responsibility for potential users. The implementation of the program on the Univac 1108 computer is discussed. The application of the program for mission planning and project management is described.

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NASA NTRS1972

Integrated operations/payloads/fleet analysis (executive summary)

The Integrated Operations/Payloads/Fleet Analysis predicts total national space program costs and launch vehicle traffic assuming either an expendable, a partially reusable or a fully reusable launch vehicle fleet. The payload system costs are estimated and reported for each payload program at the subsystem level, payload program level, user level and national level, providing complete system cost traceability. The analysis determines the primary changes to be expected for space payload programs and space operations in the space shuttle era. When the space shuttle becomes fully operational, not only will launch costs be reduced but refurbished satellite units will be flown instead of new units and maintenance will be performed on failing satellites. It is possible to implement the concepts of satellite refurbishment and maintenance because of the space shuttle's capability to retrieve and return payloads to the earth's surface. The two-way satellite transportation capability is extended to high energy orbits by use of the space shuttle/space tug combination.

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NASA NTRS1972

Analysis of advanced programs (Study 2.3). Volume 1: Executive summary

An analysis of advanced programs for space missions is presented. The subjects discussed are (1) alternate space shuttle configurations, (2) space transportation systems, (3) computer programs and methodology to estimate program cost implications of space vehicle program uncertainties, (4) vehicle synthesis program, (5) relative effectiveness of various proposals for space vehicles, and (6) cost analysis of solid propellant rocket engine program to support space shuttle vehicle.

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NASA NTRS1972

Research And Development Contributions to Aviation Progress (RADCAP): Executive summary

Positive contributions of military aeronautical research and development programs to civil aviation are reviewed and some possible future contributions of those military programs are assessed. A summary is presented of detailed results concerned with: (1) review of the progress that has been made in aviation since 1925 and the significant technological advances that have been made; (2) an examination of current and planned military aeronautical research and technology programs and an assessment of their relevancy to the aeronautical R and D needs of civil aviation; (3) the relationship of the development base generated by military programs to the needs of civil airliner design, development, and production; (4) information on aeronautical R and D funding; and (5) the findings and observations of the RADCAP study.

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NASA NTRS1971

Expendable second stage reusable space shuttle booster. Volume 1: Executive summary

The development of an expendable second stage for use with a reusable space shuttle booster is discussed. The configuration of a low-cost, reusable multipurpose space transportation system for the 1980 time period is presented. A system capable of economically placing payloads in earth orbit which are larger and heavier than can be carried in the shuttle orbiter cargo bay is defined. The ESS/reusable shuttle system is complementary to the space shuttle system and provides mission flexibility to permit economical expansion of the overall space program.

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NASA NTRS1972

Analysis of space tug operating techniques (study 2.4). Volume 1: Executive summary

The costs of tug refurbishment were studied, using existing cost estimating relationships, to establish the cost of maintaining the reusable third stage of the space transportation system. Refurbishment operations sheets which describe the actual tasks that are necessary to keep the equipment functioning properly were used along with refurbishment operations sheets which contain all of the pertinent descriptive information for each of the major vehicle areas. Tug refurbishment costs per mission are tabulated.

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NASA NTRS1972

Large space telescope, phase A. Volume 1: Executive summary

The Phase A study of the Large Space Telescope (LST) is reported. The study defines an LST concept based on the broad mission guidelines provided by the Office of Space Science (OSS), the scientific requirements developed by OSS with the scientific community, and an understanding of long range NASA planning current at the time the study was performed. The LST is an unmanned astronomical observatory facility, consisting of an optical telescope assembly (OTA), scientific instrument package (SIP), and a support systems module (SSM). The report consists of five volumes. The report describes the constraints and trade off analyses that were performed to arrive at a reference design for each system and for the overall LST configuration. A low cost design approach was followed in the Phase A study. This resulted in the use of standard spacecraft hardware, the provision for maintenance at the black box level, growth potential in systems designs, and the sharing of shuttle maintenance flights with other payloads.

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NASA NTRS1972

Space shuttle auxiliary propulsion system design study. Executive summary

The development and characteristics of an auxiliary propulsion system for space shuttle applications are presented. The system design data necessary for selection of preferred system concepts and the requirements for complementing component design and test programs are analyzed. The use of cryogenic oxygen and hydrogen as a propellant combination is explained on the basis of high vehicle impulse requirements, safety factors, reuse, and logistics considerations. The final configurations for the alternate propellant system, with primary emphasis on earth storable propellants is described.

Kelly, P. J.↗
NASA NTRS1972

Astronomy sortie missions definition study. Volume 1: Executive summary

A study was conducted to determine if a group of existing astronomy experiments, with stated scientific objectives could be accommodated by the sortie mission. Additional goals of the study included defining the operational concept, the support hardware, mission profiles, and the kind of interfaces that would be required with the space shuttle and sortie lab. The results of the study are presented and indicate that the astronomy sortie mission concept: (1) is technically feasible using present-day technology with a few exceptions, (2) is responsive to the stated scientific objectives, and (3) does provide an important contribution to the overall space astronomy program.

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