Seasat A. Oceanography today
The mission, orbital flight, and onboard instrumentation of Seasat A are described.
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Aviation meteorology: Today and the future
A representative of the Air Weather Service, USAF addressed the workshop and gave an assessment of the present state of aviation meteorology and a prognosis of the future. Three categories of meteorological support to aviation systems are considered and discussed; (1) terminal weather; (2) the winds for flight planning; and (3) en route flight hazards.
Rowe, B. W.↗
The cosmos today and tomorrow
The book ""Tested on Oneself'' is summarized and reviewed. Topics in the field of space flight and aerospace medicine are addressed.
Guseva, E.↗
Space Shuttle external tank: Today - DDT & E: Tomorrow - Production
The External Tank (ET) is the structural backbone of the Space Shuttle. The ET is discussed relative to its role; its design as a highly efficient Shuttle element; the liquid oxygen tank - a thin shelled monocoque; the intertank - the forward structural connection; the liquid hydrogen tank structure - the connection with the Orbiter; the ET structural verification; the propulsion system - a variety of functions; the electrical subsystem; electrical subsystem qualification; the thermal protection system; and other related problems. To date the qualification programs have been extremely successful and are almost complete, and the first flight tank has been delivered. Tomorrow's objectives will concentrate on establishing the facilities, tools and processes to achieve a production rate of 24 ETs/year.
Norton, A. M.↗
Solar electric propulsion system /SEPS/: Tomorrow's propulsion system - Today
Mission and system concepts relating to the SEPS project will be discussed as well as an overview of current project planning. SEPS system concept descriptions will be limited to in-house NASA concepts. The capabilities of the in-house concepts to meet a wide range of mission requirements will be described to give an indication of potential capabilities SEPS can provide to the space mission planners.
Austin, R. E.↗
Space telescope - Meeting the pointing control challenge with today's technology
The pointing control system of the Space Telescope, which provides target-to-target maneuvering capability and precision pointing on the target star (with 0.007-arcsec stability and 0.01-arcsec accuracy), is described. Spacecraft attitude control is undertaken by onboard computer processing of attitude and rate sensor data that generates reaction wheel torque commands. The Space Telescope Operations Control Center communicates with the Space Telescope via the synchronous altitude tracking and data relay satellite system, and determines vehicle attitude more precisely by means of sun sensors, magnetometers and fixed-head star trackers. Such disturbance torques as those of gravity gradients and aerodynamics act on the Space Telescope, causing the speeds of the four reaction wheels to increase. In order to prevent the wheels from reaching a speed-saturated condition, a momentum control system is provided for the management of reaction wheel speed buildup. Attention is given to development testing and control hardware investigations and improvements.
Dougherty, H.↗
The new space transportation begins today
It is pointed out that increasing space capabilities and the inevitable industrialization of space will place an even greater traffic demand on the Space Shuttle than first projected. The Shuttle will be upgraded by evolutionary steps, and then a new system will be developed to replace it. System-level studies aimed at post-2000 vehicles have been conducted by NASA under the name Future Space Transportation System (FSTS). FSTS began in October 1981 with the objective to define a launch-vehicle concept which improves space transportation capabilities and economics. A second aim was related to the projection of technology requirements beyond previous studies, especially in the areas of structures, propellant tankage, thermal protection, aerothermodynamics and operation. It has been estimated that a fully reusable two-stage system could deliver a payload of 150,000 lb, more than twice the payload of the Space Shuttle for only a slight increase in size and weight.
Freeman, D. C., Jr.↗
Army aviation today and tomorrow
Military helicopters and their functions in combat are described. Electronic countermeasures, target acquisition, surveillance, reconnaissance, weapons systems, night flight capability, troop transport, and nap-of-the-earth navigation are discussed.
Philips, G.↗
Spatial information technologies for remote sensing today and tomorrow; Proceedings of the Ninth Pecora Symposium, Sioux Falls, SD, October 2-4, 1984
Topics discussed at the symposium include hardware, geographic information system (GIS) implementation, processing remotely sensed data, spatial data structures, and NASA programs in remote sensing information systems. Attention is also given GIS applications, advanced techniques, artificial intelligence, graphics, spatial navigation, and classification. Papers are included on the design of computer software for geographic image processing, concepts for a global resource information system, algorithm development for spatial operators, and an application of expert systems technology to remotely sensed image analysis.
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Space technology today
The current status of major NASA programs and planning efforts is surveyed. Consideration is given to space-sciences programs (IRAS, SIRTF, Space Telescope, and planetary probes), applications programs (terrestrial remote sensing, communication, and meteorology), manned spacecraft, the STS, the Space Station, space commercialization efforts (materials processing and bioprocessing), and the feasibility of permanent lunar bases and manned Mars expeditions. Photographs and drawings are included.
Cohen, A.↗
Composites in today's and tomorrow's U.S. airliners
The research conducted by NASA's Aircraft Energy Efficiency Composites program in developing essential technologies for the efficient utilization of composites in the airframe structures of transport aircraft is described. Current activities, present state-of-the-art, production trends in the U.S., and the outlook for major use of composites in primary structures are examined. Special attention is given to application of composites in transport wing and fuselage structures. The projections for the Advanced Tactical Fighter of the late eighties suggest application of composites in the airframe structures to the extent of 50 percent, an all-composite transport could become a reality in the mid-nineties.
Bohon, H. L.↗
Yesterday, today and tomorrow: A perspective of CFD at NASA's Ames Research Center
The opportunity to reflect on the computational fluid dynamics (CFD) progam at the NASA Ames Research Center (its beginning, its present state, and its direction for the future) is afforded. Essential elements of the research program during each period are reviewed, including people, facilities, and research problems. The burgeoning role that CFD is playing in the aerospace business is discussed, as is the necessity for validated CFD tools. The current aeronautical position of this country is assessed, as are revolutionary goals to help maintain its aeronautical supremacy in the world.
Kutler, Paul↗
Meeting today's requirements for large thermal vacuum test facilities
The Lockheed Thermal Vacuum Facility at Sunnyvale, California, completed in late 1986, one of the largest multi-program facilities constructed to date is described. The horizontal 12.2 m diameter by 24.4 m long chamber has removable heads at each end and houses a thermal shroud providing a test volume 10.4 m diameter by 24.4 m long. The chamber and thermal shroud are configured to permit the insertion of a 6.1 m wide by 24.4 m long vibration isolated optical bench. The pumpimg system incorporates an internal cryopumping array, turbomolecular pumps and cryopumps to handle multi-program needs and ranges of gas loads. The high vacuum system is capable of achieving clean, dry and empty pressures below 1.3 times 10 to the minus 6 power Pa (10 to the minus 8 power torr.)
Corinth, R. L.↗
Advanced composite airframe program: Today's technology
The Advanced Composite Airframe Program (ACAP) was undertaken to demonstrate the advantages of the application of advanced composite materials and structural design concepts to the airframe structure on helicopters designed to stringent military requirements. The primary goals of the program were the reduction of airframe production costs and airframe weight by 17 and 22 percent respectively. The ACAP effort consisted of a preliminary design phase, detail design, and design support testing, full-scale fabrication, laboratory testing, and a ground/flight test demonstration. Since the completion of the flight test demonstration programs follow-on efforts were initiated to more fully evaluate a variety of military characteristics of the composite airframe structures developed under the original ACAP advanced development contracts. An overview of the ACAP program is provided and some of the design features, design support testing, manufacturing approaches, and the results of the flight test evaluation, as well as, an overview of Militarization Test and Evaluation efforts are described.
Good, Danny E.↗
Preparing for the 90s using today's communications assets
Such existing NASA/U.S. facilities and spacecraft as those of the Deep Space Network, VLA, and Arecibo are presently judged capable, at modest additional investment during the next five years, to acquire unique space science data, to generate mission planning data for missions to be launched in the early 1990s, and to evaluate and demonstrate communications and navigation technology for missions of the late 1990s and beyond. The more ambitious of these efforts will contribute the continuation of space research attractiveness for students, as well as furnish an important part of their scientific training.
Posner, Edward C.↗
Magnetic suspension - Today's marvel, tomorrow's tool
NASA's Langley facility has through constant advocacy of magnetic suspension systems (MSSs) for wind-tunnel model positioning obtained a technology-development status for the requisite large magnets, computers, automatic control techniques, and apparatus configurations, to contemplate the construction of MSSs for large wind tunnels. Attention is presently given to the prospects for MSSs in wind tunnels employing superfluid helium atmospheres to obtain very high Reynolds numbers, where the MSS can yield substantial enhancements of wind tunnel productivity.
Lawing, Pierce L.↗
Launch operations manpower yesterday, today and tomorrow
The manpower to accomplish spacecraft launch operations was analyzed. It seems that the ratio of personnel to launches was much higher in the beginning of the space program than in later years. The analysis was performed to see why the operational efficiency was better then than now and how that efficiency can be reattained.
Ojalehto, George↗
Bristol Today
The topics are presented in viewgraph form and include the following: corporate organization; product groups; the CRV7 rocket weapon system; Black Brant Sounding Rockets; apogee performance; space payload experience; the Orbital Express; and program and procurement requirements.
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