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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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Scaling laws for predicting penetration of semiinfinite targets by particles traveling at meteoroid velocities - simulation techniques for low velocity and hypervelocity impacts
Penetration of interstellar cosmic rays into solar system
Study of protection requirements for resistance of meteorite penetration damage for various interplanetary spacecraft systems
Quantum mechanical calculations for Lennard- Jones potential show dependence of barrier penetration and resonance effects on phase shifts
Servo system senses variations in fusion welding process, and adjusts the control parameters to compensate for them. The system assumes a correlation between uniform weld penetration and temperature gradients near the molten puddle. It senses weld properties and makes adjustments to travel speed and weld current.
Hollow cathode electron beam discharge for penetrating plasma sheath around reentry vehicle
Statistical analysis of Pegasus satellite measurements of meteoroid penetration
Quantum mechanical calculations to evaluate barrier penetration and resonance effects on phase shifts
Meteoritic dust penetration and charge detection techniques used on Skylark rocket and Ariel II satellite
Proton penetration codes for dose calculation through aluminum and iron shielding
Lift penetration and growth effects on space vehicle response based on slender body theory
Wind penetration effects on flight simulations evaluated in frequency domain by solution of theoretical transfer function, showing relationship to angle of attack
Appropriate importance function and sampling scheme facilitates the application of the Monte Carlo method to problems involving the deep penetration of radiation.
Nondestructive testing for detecting lack of penetration in aluminum fusion welds
Penetration of porous projectiles in aluminium and plastic targets
Numerical analysis of penetration of plate in half plane within supersonic flow
Testing and evaluation of capacitor type meteoroid penetration
Penetration resistance of aluminum double sheet targets to projectile impact