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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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Feasibility of using strong magnetic field gradients to accelerate small, metallic projectiles to velocities for simulating micrometeoroid impacts
Small metallic projectiles accelerated by magnetic field gradients for micrometeoroid impact simulation
Hypervelocity impact tests on aluminum target plates to evaluate micrometeoroid impact sensors - Laser simulation study
Process of energy dissipation through radiation and evaporation, deceleration by drag, and ablation through evaporation of spherical stony micrometeorites in earth atmosphere
Study of protection requirements for resistance of meteorite penetration damage for various interplanetary spacecraft systems
Micrometeoroid composition determined using spectrographic analyzer to measure emission spectra of heated particles
Micrometeoroid impact fracture rates in wire, flat tapes, and thin-walled hollow tubes
Fabrication and testing of large area metal oxide silicon capacitors for micrometeoroid counting in space
Mathematical models for probability of successful traverse of asteroid belt or zero penetration of spacecraft shield
Dielectrics evaluated for use in micrometeoroid sensor capacitors
Micrometeoroid mass, velocity, and composition from impact flash signature by spectroscopic analysis
Solar reflective thermal control coatings for spacecraft using hafnia and calcia
Computer program determines minimum shielding necessary for adequate protection of flight hardware, based on component physical size, methods of shielding to be used, and amount of damage which can be sustained without component failure.
Developing aluminum meteoritic simulators for hypervelocity impact test using shaped charges
Qualitative micrometeoroid model for predicting results of in situ experiments, considering correlation to Pioneer 8 and 9 results
The analysis of hypervelocity impact of particles on a detector in space, with flow and shock penetration through fluid, plastic, and elastic zones was studied. The original paper and computer program on this topic is presented. Improvements in the program for the study of the formation of a cone of debris are discussed. The truncated apex of the cone is at the hole formed by the penetration of an initially spherical rock through a thin plate. A solution for the penetration of the thin plate was sought.
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The physical behavior and composition of shower meteors were examined in an effort to establish the structure of its parent comet. Properties considered include degree of fragmentation and density.