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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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Hazards of interaction of meteoroids with thin metallic shields of spacecraft structures and computations of impact damage for definition of penetration
NASA astronaut training program including Manned Spacecraft Center simulation operations
Feasibility of predicting equilibrium temperatures in complex flight spacecraft from environmental simulation tests of small scale thermal model of Mariner IV
Optimum structural meteoroid protection requirements for Apollo and Mars mission spacecraft
Modifications to interim visual space flight simulator
Space simulation using contamination-free test facilities combining several cryogenic techniques to produce all cryogenic system
Contaminant concentration due to human habitation of space cabin simulator at 258 mm Hg and oxygen atmosphere environment
Design, and instrumentation of modified space environment simulator for spacecraft testing
Life support systems test in spacecraft cabin simulator with oxygen and water recovery
Test environment and technique permitting ionospheric plasma simulation for spacecraft instruments performance evaluation
Integrated life support system simulation, analyzing spacecraft atmosphere temperature and oxygen recovery
Computerized and dynamic simulation models for spacecraft systems - mathematical models for predicting human and spacecraft structure performances during space flight simulation
Engineering results of 60-day manned test of regenerative life support system with oxygen and water recovery in spacecraft cabin simulator
Discrete network simulation in spacecraft checkout
Fire detection-extinguishment and automatic rapid recompression systems for hypobaric spacecraft cabin simulators
Continuous-channel electron multipliers degradation in spacecraft environment simulation laboratory equipment
The effect of simulated Nimbus spacecraft orbital (1100 km, circular, and polar) radiation on wide bandpass glass filters, narrow bandpass thin film interference filters, and several fused silicas was determined by transmittance measurements over the 200 to 3400 nanom wavelength region. No changes were observed in the filters, which were shielded with fused silica during irradiation, after exposure to a 1-year equivalent orbital dose of electrons, nor in the fused silicas after the same electron exposure plus a 1-year equivalent dose of protons. Exposure to a 1/2-year equivalent dose of solar ultraviolet radiation caused a significant degradation in the transmittance of two ultraviolet-transmitting interference filters but had no effect on two colored glass filters that transmitted in the visible and near infrared regions. As a result of the ultraviolet exposure the fused silicas exhibited losses of several percent over the 200- to 300 nanom wavelength region.
The technical development of a computer program for predicting microbial burden on unmanned planetary spacecraft is outlined. The discussion includes the derivation of the basic analytical equations, the selection of a method for handling several random variables, the macrologic of the computer programs and the validation and verification of the model. The prediction model was developed to (1) supplement the biological assays of a spacecraft by simulating the microbial accretion during periods when assays are not taken; (2) minimize the necessity for a large number of microbiological assays; and (3) predict the microbial loading on a lander immediately prior to sterilization and other non-lander equipment prior to launch. It is shown that these purposes not only were achieved but also that the prediction results compare favorably to the estimates derived from the direct assays. The computer program can be applied not only as a prediction instrument but also as a management and control tool. The basic logic of the model is shown to have possible applicability to other sequential flow processes, such as food processing.