Results 71 to 80 of about 11,111 (215)
Analysis of Dual Bell Nozzle Configurations: Design Parameters and Performance Measurements [PDF]
Journal of Applied Fluid MechanicsThe auto-adaptation capability of the dual-bell nozzle (DBN) facilitates and enhances the performance of rocket propulsion systems, thus rendering it suitable for sea-level operations and efficient transitions at varying altitudes.
T. Chehat +3 more
doaj +1 more source
Out‐of‐field neutron radiation from clinical proton, helium, carbon, and oxygen ion beams
Medical Physics, Volume 52, Issue 6, Page 4924-4940, June 2025.Abstract Background In hadron therapy, out‐of‐field doses, which may in the long‐term cause secondary cancers, are mostly due to neutrons. Very recently, 4He and 16O beams have been added to protons and 12C ions for clinical therapy. Purpose The focus of this article is to compare secondary neutron doses produced by clinical protons, 4He, 12C, and 16O ...
Matteo Bolzonella +11 more
wiley +1 more source
Protective coating for refractory metals in rocket engines supplemental report, mar. 8, 1963 - mar. 15, 1964 [PDF]
Protective coating systems for refractory metal used in rocket engine nozzles - rocket engine test ...
core +1 more source
Fluid Dynamics and Infrared Stealth of Marine IRS Devices: A Review
International Journal of Mechanical System Dynamics, Volume 5, Issue 2, Page 179-200, June 2025.ABSTRACT Infrared suppression (IRS) devices for naval ships play a crucial role in reducing the infrared radiation signature of high‐temperature exhaust, thereby enhancing the survivability of ships against infrared‐guided weapons. This paper provides a comprehensive review of recent advancements in the design and optimization of IRS devices.
Yitao Zou +5 more
wiley +1 more source
A Study of an Asymmetric Flow in an Overexpanded Rocket Nozzle
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2006 This paper presents an investigation of the unsteady three-dimensional flow in an overexpanded rocket nozzle during a shutdown transient. Experimental and numerical investigations were carried out. It is known that, in some cases, an asymmetric flow induces a serious lateral force called “side load” during transient operations. The focus of
Koichi Yonezawa +4 more
openaire +5 more sources
Научно-технический вестник информационных технологий, механики и оптикиWhen the rocket moves in the dense layers of the Earth’s atmosphere, classical nozzles operate in the jet overexpansion mode. In this mode, there is a partial decrease in the magnitude of the specifc impulse.
M. V. Mikhailov +2 more
doaj +1 more source
Nanosecond Hyperquenching for Electron Cryo‐Microscopy Without Air‐Water Interface Artifacts
Chemistry – A European Journal, Volume 31, Issue 29, May 22, 2025.A novel method for the ultrafast vitrification of the biological assemblies is assayed by the electron cryotomography. Protein specimens prepared by this method inherently lack the spatial/structural artifacts, which derive from the surface tension at the air‐water interface (AWI).
Utz H. Ermel +2 more
wiley +1 more source
Oxide‐Based Ceramic Matrix Composites for High‐Temperature Environments: A Review
Advanced Engineering Materials, Volume 27, Issue 7, April 2025.This review examines oxide‐based ceramic matrix composites, focusing on their processing, composition, and mechanical properties for high‐temperature applications. Key topics include oxidation resistance, failure mechanisms, and corrosion behavior, with insights into their potential use in aerospace, nuclear power, and other high‐performance industries.
Karthikeyan Ramachandran +2 more
wiley +1 more source
Analytical investigation of side jet supersonic stream interaction including vortex flow in rocket nozzles for thrust vector control [PDF]
Analytical investigation of side jet supersonic stream interaction including vortex flow in rocket nozzles for thrust vector ...
Comparin, R. A., Wilson, W. G.
core +1 more source
Propulsion and Thermodynamic Parameters of van der Waals Gases in Rocket Nozzles
International Journal of Aerospace Engineering, 2019 Propellants or combustion products can reach high pressures and temperatures in advanced or conventional propulsion systems. Variations in flow properties and the effects of real gases along a nozzle can become significant and influence the calculation ...
Fernando S. Costa, Gustavo A. A. Fischer
doaj +1 more source