Results 71 to 80 of about 23,038 (167)
Variable gravity research facility [PDF]
Spin and despin requirements; sequence of activities required to assemble the Variable Gravity Research Facility (VGRF); power systems technology; life support; thermal control systems; emergencies; communication systems; space station applications ...
Allan, Sean +9 more
core +1 more source
Solvent‐Induced Surface Morphology Probed by NP‐SIMS
Surface and Interface Analysis, EarlyView.ABSTRACT Surface morphology, that is, roughness and molecular arrangement, is known to have an impact on secondary ion mass spectra. The present study examines this issue using nanoprojectile secondary ion mass spectrometry (NP‐SIMS). NP‐SIMS involves bombarding the analyte with individual nanoparticles resolved in space and time and recording the ...
Pierre Hirchenhahn +5 more
wiley +1 more source
Overview of space propulsion systems for identifying nondestructive evaluation and health monitoring opportunities [PDF]
The next generation of space propulsion systems will be designed to incorporate advanced health monitoring and nondestructive inspection capabilities. As a guide to help the nondestructive evaluation (NDE) community impact the development of these space ...
Generazio, Edward R.
core +1 more source
Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review
SmartBot, EarlyView.Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen +7 more
wiley +1 more source
Advanced propulsion concepts [PDF]
The topics presented are covered in viewgraph form. The programmatic objective is to establish the feasibility of propulsion technologies for vastly expanded space activity.
Sercel, Joel C.
core +1 more source
Small, EarlyView.A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal +3 more
wiley +1 more source
Nonaerospace uses of chemical rocket technology [PDF]
Nonaerospace uses of chemical rocket ...
Olson, W. T.
core +1 more source
Filling a Gap in Materials Mechanics: Nanoindentation at High Constant Strain Rates up to 105 s−1
Small, EarlyView.A piezoelectric nanoindentation platform enables constant strain‐rate testing up to 105 s−1, extending experimental capabilities to extreme deformation regimes. Distinct hardness upturns are revealed across crystalline and amorphous materials, verified as intrinsic responses through quasi‐static reloading.
Lalith Kumar Bhaskar +14 more
wiley +1 more source
How many shots are enough? Optimizing precision measurements when testing lead‐free ammunition
Wildlife Biology, EarlyView.Growing concern about lead exposure in scavenging wildlife and the consumers of game meat has increased interest in evaluating the performance of lead‐free rifle ammunition. Testing both accuracy and precision helps ensure reliable shot placement while reducing the risk of non‐fatal woundings.
Michael McTee +2 more
wiley +1 more source
The generalized Tsiolkovsky equation [PDF]
The performance of a rocket, say a chemical rocket, can be greatly improved by dynamically transferring energy from one part of the propellant to another.
Dvornychenko, V. N.
core +1 more source