Digital Commons Network^™

Electronic Sleep Control Of Astronauts, T. C. Helvey

Space Congress® Proceedings

Astronautic mission profiles require for the crew, various sleep-wakefulness cycles which are quite different from the normal diurnal rhythm. It has been found that there are means by which certain levels of sleep can be induced electronically without undesirable side effects. The paper describes the efforts made so far in the international scientific community and also the results of his own experiments.

System Reliability Testing In Space Simulators, Le Kratzer, Vasily D. Prian

Space Congress® Proceedings

All too often the cost in time and money seriously limits the required testing programs. Scientific personnel accept the challenge of space craft design but are rarely stimulated to design and operate the required testing facilities. The space craft test engineer of today must, of necessity, be an experienced expert in all phases of space technology power-plants, solar arrays, hydraulics, pneumatics, structures, dynamics, ultra-high vacuum, solar effects, etc.

Today ! s space environmental testing procedures and techniques have developed a number of varied and specialized test facilities to insure system reliability of space craft. Of these many types, the most …

Non-Conventional Communication, E. D. Dean

Space Congress® Proceedings

To try to overcome the problem of time delay in radio communication with deep space missions, a possible new type of direct communication between two persons has been investigated. The method consists in stimulating the first person by his performing mental arithmetic operations or remembering names. Coinciding responses from the second person have been measured with an electronic plethysmograph or finger volume change recorder. The response signals seem to be larger for stimulation than for control periods over distances of hundreds of miles. Thus a binary code communication device of large-small signals (like dots and dashes of the ternary Morse …

Solar Generation Of Electric Power At Lunar Pole, George E. Henry

Space Congress® Proceedings

A theoretical investigation of possibilities for an electric power station, appropriate for installation and use on the moon, late in the 20th century, leads to a tentative decision in favor of a solar driven Rankine cycle turboelectric system. Such a station would be located at one of the lunar poles, to take advantage of continuous sunlight for the collector, and continuous shade for the radiator, in close proximity. Gross thermodynamic characteristics of the system are investigated in a preliminary way.

Analysis Of Pressure And Flow Transients In Systems With Heat Additions, Darrel G. Harden

Space Congress® Proceedings

The occurrence of pressure and flow fluctuations in fluid flow systems with heat addition has been noted in many isolated instances. Under certain conditions of local "boiling, which includes a boiling-like mechanism at super-critical pressures, intense sounds and mechanical vibrations can be generated. A mechanism for these fluctuations is derived based on fundamental considerations. A large change in density with enthalpy, such as occurs at a liquid to vapor phase change point or in the super-critical region, will.introduce a flow transient. Changes in the frictional resistance to flow can also initiate a transient condition.

Optical System For Measuring Position In Space, Ronald R. Willey

Space Congress® Proceedings

There exist certain distinct advantages in accuracy and economy in the use of systems to measure vehicle position which operate at optical wavelengths. The positions measured are usually of critical importance to the success of a space mission.

There are several types of navigational and tracking systems which produce data in an immediately usable form. Such "real time" systems, however, sacrifice some relative accuracy to gain speed of data availability.

Stellar metric camera systems presently offer the most accurate means of determining position in space; however, there is an unavoidable time delay in reducing the data to a usable form. …

Precise Tracking Trhough The Uncertain Atmosphere, David K. Barton

Space Congress® Proceedings

Bias errors caused by tropospheric refraction may now be corrected to a level * below the threshold of the best radars • In most cases 9 only surface weather data is needed for this. The errors which remain will fluctuate at frequencies from one cps down to one cycle per day, or less, and will lead to serious errors in both radar and interferometer systems. Long baselines reduce the error f but the presence of long-period components in both space and time causes the error to drop very slowly as the baseline is extended. Effects of these components on position …

Optical Communication System Acquisition And Tracking, R. E. Johnson

Space Congress® Proceedings

The problem of acquiring and tracking a distant terminal for long-range laser communications is defined and solutions suggested* Factors considered include the effects of the atmosphere, the transit time, and the inherent limitations of optical systems.

Various parametric tradeoffs can be made in the synthesis of a system capable of the required accuracies. Some of the parameters have basic, or inherent, limitations while others are limited by size, weight, or cost considerations. These parameters are defined and their magnitudes established.

Finally, various system components are examined and their necessary characteristics defined to provide guidelines for the future development of equipments …

Microwave, Over Wafer, Multipath Propagation Tests At The Mistram Eleuthera Site, E. W. Heinzerling

Space Congress® Proceedings

A multipath propagation test using the sweep frequency technique was performed over the 28-mile over-water path between Mistram Central Station and Powell Point at Eleuthera, B.W.I, during November of 1963. Large ocean reflected signals were noted. Test results show path length differences between the direct and reflected signal up to six times larger than the theoretically computed values taking into account earth curvature and 4/3 earth type of refraction corrections. The relative magnitude of the reflected signal with respect to the direct signal varied between 0.3 and 0.96.

Poor correlation between multipath phenomena and measured weather data was noted.

Application …

Man-Rating The Gemini Launch Vehicle, Haggai Cohen

Space Congress® Proceedings

The paper examines the disciplines and new approaches being utilized which together comprise the "Man-Rated" Gemini-Titan II Air Force Launch Vehicle Program, It discusses the critical component program; the technical and specialized skill training and certification program; the Quality Systems Engineering approach; the advanced corrective action and failed parts analysis program; the classification of characteristics program established for fabrication and test; the workmanship discipline approach; individual performance measurement; the Zero Defects program; personnel motivation; Air Force Space Systems Division disciplines imposed by the "Pilot Safety Program"; the limited life component program; the procurement controls imposed; and finally, an evaluation of …

Solar Energy Conversion By Thermal Destruction Of Conductivity, C. D. Schwebel

Space Congress® Proceedings

A method is proposed for converting solar radiation directly to electrical energy in space by utilizing the change of state of a superconductor. Apparatus is described whereby intermittent exposure to a concentrated beam of solar radiation causes a magnetic shield to fluctuate between the superconductive state (zero permeability) and the normal state (unity permeability) with resultant flux changes converted to electrical energy by conventional induction methods.

A thermal embodiment of Lexis's law, akin to the back torque of a conventional generator or the counter current in the primary of a transformer, is postulated. Such a reaction is demanded by energy …

Laboratory In Space, Michael I. Yarymovych

Space Congress® Proceedings

The manned space station is growing in prominance as the potential next manned space flight project. The NASA plans and studies in the area of advanced manned earth orbital systems are discussed. The requirements for an Orbital Research Laboratory and its uses in the biomedical, scientific and engineering research areas are highlighted. Potential concepts of orbital laboratories ranging from minimum modifications of the Apollo spacecraft to a large 24-man space station are compared.

Meeting The Challenges To State Highway Departments, Roy E. Jorgensen

Purdue Road School

No abstract provided.

Front Cover, Purdue Road School

Purdue Road School

No abstract provided.

Continuing Transportation Studies For Urban Areas, Carlton C. Robinson

Purdue Road School

No abstract provided.

Recent Engineering Extension Publications, Purdue Road School

Purdue Road School

No abstract provided.

Theory Of Traffic Flow - Statistical Models, J C. Oppenlander

Purdue Road School

No abstract provided.

The Future Role Of Traffic Engineering, Fred W. Hurd

Purdue Road School

No abstract provided.

Back Cover, Purdue Road School

Purdue Road School

No abstract provided.

Observations Of A Highway Commissioner, J Earle Wooding

Purdue Road School

No abstract provided.

Basic Concepts Of Statistical Quality Control, Paul Irick

Purdue Road School

No abstract provided.

The Role Of The Automobiles In Future Urban Transportation, Carlton C. Robinson

Purdue Road School

No abstract provided.

Front Matter, Purdue Road School

Purdue Road School

No abstract provided.

Research And Development In Applications Of Quality Control To Highway Construction, T F. Mcmahon

Purdue Road School

No abstract provided.

County Highway Planning, Harold L. Michael

Purdue Road School

No abstract provided.

The Bureau's Speed Study, Charles W. Prisk

Purdue Road School

No abstract provided.

Systematic Cleaning And Maintenance Of Streets, Robert D. Bugher

Purdue Road School

No abstract provided.

Can Highway Accidents Be Reduced?, Charles W. Prisk

Purdue Road School

No abstract provided.

Preface, Purdue Road School

Purdue Road School

No abstract provided.

Vehicular Trip Estimation In Urban Areas, James J. Schuster, Harold L. Michael

Purdue Road School

No abstract provided.