Results 111 to 120 of about 38,834 (246)
Carbon Neutralization, Volume 5, Issue 3, May 2026.An electron structure modulation engineering strategy is developed by tuning the first coordination shell and leveraging synergistic effects with adjacent nanoparticles of Co single atoms. The CoS@Co–N2S2 catalyst achieves an average H2O2 selectivity of 88% (0.3–0.55 V), whereas CoS2@Co–NS3 exhibits 52% 4e− selectivity.
Yan Cheng +5 more
wiley +1 more source
In-situ propellant rocket engines for Mars mission ascent vehicle [PDF]
When comtemplating the human exploration of Mars, many scenarios using various propulsion systems have been considered. One propulsion option among them is a vehicle stage with multiple, pump fed rocket engines capable of operating on propellants ...
Roncace, Elizabeth A.
core +1 more source
Shuttle orbiter with telescoping main propulsion unit and payload [PDF]
, 1993 An improved Space Shuttle with variable internal volume is provided. The Space Shuttle Orbiter includes a telescoping main propulsion unit. This main propulsion unit contains the main rocket engines and fuel tanks and telescopes into the Space Shuttle. A
Macconochie, Ian O.
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Engineering Reports, Volume 8, Issue 5, May 2026.A numerical investigation using 3D RANS simulations demonstrates significant effects of protuberance geometry—cubic, cylindrical, spherical, and conical—on shock‐induced thrust vectoring in supersonic nozzles. Cubic protuberances provide the maximum jet deflection (˜2°) with negligible thrust reduction.
Mohammadreza Soufivand +3 more
wiley +1 more source
HYPERGOLIC SYSTEMS: A REVIEW IN PATENTS. doi: 10.5028/jatm.2012.04043812
Journal of Aerospace Technology and Management, 2012 Hypergolic reactions may be useful in civil and military applications. In the area of rocket propulsion, they constitute a potential field due to the reduced wheight and complexity of fuel injection systems, allowing yet controlled use of the propulsors.
Gilson da Silva, Koshun Iha
doaj
Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber
AerospaceThe performance of two solid biomass wastes, date stone and jojoba solid waste, was experimentally examined for their potential application in combustion and propulsion systems.
Saleh B. Alsaidi +2 more
doaj +1 more source
A reusable rocket engine intelligen control [PDF]
An intelligent control system for reusable space propulsion systems for future launch vehicles is described. The system description includes a framework for the design. The framework consists of an execution level with high-speed control and diagnostics,
Lorenzo, Carl F., Merrill, Walter C.
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Electrostatic propulsion system with a direct nuclear electrogenerator Patent [PDF]
, 1965 Nuclear electric generator for accelerating charged propellant particles in electrostatic propulsion ...
Low, C. A., Jr., Mickelsen, W. R.
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High‐Velocity Ballistic Impact Performance of FFF Printed PEEK With Different Infill Patterns
Macromolecular Materials and Engineering, Volume 311, Issue 5, May 2026.This study examines 3D printed PEEK under Izod, quasi‐static, and high‐velocity impact. Hexagonal infill shows the highest Izod impact strength and superior quasi‐static energy absorption. However, under ballistic impact, all patterns behave similarly, indicating performance depends on infill at low velocity, but on intrinsic material properties at ...
Rajeshkumar Dhanapal +7 more
wiley +1 more source