Aerospace, 2023 This study delves into the examination of internal flow characteristics within closed (with nozzles) and open-end pressure-swirl atomizers (lacking nozzles).
Julio Ronceros +6 more
doaj +1 more source
Original Romanian Research for a Rocket Engine with Multiple Combustion Chambers during 1940 - 1944 [PDF]
INCAS Bulletin, 2020 The paper presents certain points of view regarding the history of Romanian rocket engines, during 1940-1944. Working independently of other scientists, during 1942 – 1944 the Romanian Nicolae Văideanu has invented and designed, independently of other ...
Nicolae-Florin ZAGANESCU +2 more
doaj +1 more source
Experimental investigation of free jets through supersonic nozzles [PDF]
, 2022 In this paper, we report experimental investigation to improve the shape of a supersonic nozzle for rarefied flows to generate high axial density at extended distances from the nozzle. The reported work is significant for molecular jet/beam applications that require high center-line density and narrow jet profile.
arxiv +1 more source
Characterization of the Three-Dimensional Flowfield over a Truncated Linear Aerospike
FluidsThe work focuses on the characterization of the flowfield over a truncated linear aerospike by combining theoretical grounds, numerical simulations and experimental tests.
Roberto Marsilio +3 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 This paper aims to study the influence of the structure of spray holes and throats on the flow field and the internal trajectory of the gas–steam ejection device.
Bing Liu +5 more
doaj +1 more source
Application of open-source software for industrial problems of vehicle lift-off gas dynamics
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017 High-power shock, heat, mechanical and especially acoustic loads present a serious problem as their impact on the rocket and the launch pad can be too strong. Turbulent supersonic jets ejected from the vehicle nozzles are the main source of these loads.
T. O. Abdurashidov +5 more
doaj +1 more source
Energies, 2021 A rotating detonation rocket engine (RDRE) with various convergent nozzles and chamber lengths is investigated. Three hundred hot-fire tests are performed using methane and oxygen ranging from equivalence ratio equaling 0.5–2.5 and total propellant flow ...
John W. Bennewitz +5 more
doaj +1 more source
Stochastic rocket dynamics under random nozzle side loads: Ornstein-Uhlenbeck boundary layer separation and its coarse grained connection to side loading and rocket response [PDF]
, 2011 A long-standing, though ill-understood problem in rocket dynamics, rocket response to random, altitude-dependent nozzle side-loads, is investigated. Side loads arise during low altitude flight due to random, asymmetric, shock-induced separation of in-nozzle boundary layers.
arxiv +1 more source
Study on Separation Characteristics of Nozzles with Large Expansion Ratio of Solid Rocket Motors
Aerospace, 2022 In order to study the flow characteristics of a nozzle with large expansion ratio and its influence on the force on the nozzle, ground cold flow test research and a fluid–structure coupling simulation analysis were carried out (maximum expansion ratio ε =
Zhihong Wang +2 more
doaj +1 more source
Density Field Reconstruction of an Overexpanded Supersonic Jet using Tomographic Background-Oriented Schlieren [PDF]
arXiv, 2023 A Tomographic Background-Oriented Schlieren (TBOS) technique is developed to aid in the visualization of compressible flows. An experimental setup was devised around a sub-scale rocket nozzle, in which four cameras were set up in a circular configuration with 30{\deg} angular spacing in azimuth.
arxiv