Parametric Synthesis of the Digital Stabilizer of the Rocket-Carrier Space Stage with a Liquid Jet Engine on the Active Section of the Flight Trajectory

2020 ◽  
Vol 52 (5) ◽  
pp. 13-25
Author(s):  
Yevgeniy Ye. Aleksandrov ◽  
Tatyana Ye. Aleksandrova
Keyword(s):  
Liquid Jet ◽  
Flight Trajectory ◽  
Parametric Synthesis ◽  
Jet Engine ◽  
Active Section ◽  
Rocket Carrier ◽  
Carrier Space

Experimental Study on Splashing During Liquid Jet Impingement Onto a Liquid Film

2016 ◽  
Author(s):  
Zhan Yi ◽  
Naoki Oya ◽  
Koji Enoki ◽  
Tomio Okawa ◽  
Shuji Ohno ◽  
...  
Keyword(s):  
Liquid Film ◽  
High Speed ◽  
Nuclear Power ◽  
Jet Impingement ◽  
Liquid Jet ◽  
Jet Engine ◽  
Transition Length ◽  
The Impact ◽  
The Relationship ◽  
Fire Accident

A liquid jet is of considerable importance in many industrial fields including jet cleaning, jet engine and combustion. As an important example, the Monju nuclear power plant in Japan experienced a sodium leak in 1995. This led to a fire accident because the sodium reacted with oxygen in the air. To predict the significance of the fire accident, accurate evaluation of the amount of splashed droplets caused by the sodium jet impingement is of great importance. In this work, the relationship between the condition of a liquid jet and the amount of splashed droplets is explored experimentally. In the experiments, a liquid jet was emanated vertically downward from a circular nozzle onto a liquid film formed on a horizontal plate. Visualization using a high speed camera was performed to observe the condition of the liquid jet. From the nozzle, the mode of the liquid jet changed jet, lump and drop. Here, the jet mode means the continuous jet with smooth surface, the lump mode the continuous jet with disturbed surface and the drop mode the broken jet. Dependences of the transition length to each mode on the important parameters such as the jet velocity and the nozzle diameter were investigated. Measurement was also conducted for the splash ratio that is defined as the ratio of the amount of splashed droplets to the jet flow rate. It was found that the splash ratio is high when the liquid jet is in the drop mode at the impact point. It was shown that the splash ratio can be correlated well as a function of the impact Weber number and the Strouhal number of the droplets impinging the liquid film.

scholarly journals Problems and ways of their solutions in the development of a lowthrust liquid jet engine for a stage 3 liquid jet system of «Cyclone-4» launch vehicle

2020 ◽  
Vol 26 (1) ◽  
pp. 18-29 ◽  
Author(s):  
V.M. Durachenko ◽  
◽  
A.V. Shpak ◽  
S.A. Kolesnychenko ◽  
L.I. Aheyeva ◽  
...  
Keyword(s):  
Launch Vehicle ◽  
Liquid Jet ◽  
Jet Engine

DETERMINATION OF THE TYPE OF A SINGLE-USE GRENADE LAUNCHER BASED ON ITS COMPOSITE PARTS AND FRAGMENTS OF REACTIVE GRENADE FOUND AT THE PLACE OF ACCIDENT

2017 ◽  
Vol 17 ◽  
pp. 245-252
Author(s):  
V. V. Somov
Keyword(s):  
Combustion Chamber ◽  
Structural Features ◽  
Outlet Section ◽  
Technical Expertise ◽  
Jet Engine ◽  
Size Ofthe ◽  
Single Use ◽  
Nozzle Block ◽  
Considerable Damage

In carrying out an investigation into the explosion, among others, the investigative version of the use of a single-use reactive grenade launcher is being considered. The most common for criminal explosions are applied grenade launchers RPG-18, RPG-22, RPG-26. Their use is due to a number of such properties as small size and weight, which makes it possible to transfer them covertly, the range of the shot significantly exceeding the range of the hand grenade throw, the high detonating effect of the rocket grenade explosion. The single-use rocket launchers are generally of the same design. Their differences are in the features of the components construction and dimensional characteristics, which are given in the article. On the basis of expert practice, details ofgrenade launchers that remain at the site of the explosion and have the least damage are determined. These details are the objects of investigation of the explosion technical expertise. These objects include launchers of grenade launchers and rocket parts ofjet grenades. The design features of the launchers, their dimensional characteristics and marking symbols make it possible to determine their belonging to a specific type of jet grenade launchers. Missile parts of jet grenades differ in the form of the combustion chamber of the jet engine, nozzle, in the size ofthe outlet section of the nozzle, in the form and size of the stabilizerfeathers. To determine the belonging of the rocket part of the grenade to a specific type ofjet grenade launcher, it’s necessary to establish a set of structural features and dimensional characteristics. At considerable damage of the combustion chamber of the jet engine, as a rule, the nozzle block remains intact that allows to define diameter of critical section of a nozzle, and on it to establish type of the used single-use grenade launcher.

99. Characterization of Cold Weather Plumes from Jet Engine Start-UPS

2000 ◽  
Author(s):  
A. Armendariz ◽  
D. Leith ◽  
M. Boundy ◽  
R. Goodman ◽  
L. Smith
Keyword(s):  
Cold Weather ◽  
Jet Engine ◽  
Start Ups ◽  
Engine Start

DEVELOPMENT CAPOLAVORI MODEL OF THE CLOSED SYSTEM OF THE ACTUATOR ON THE BASIS OF GATE JET ENGINE

2017 ◽  
Vol 25 (101) ◽  
pp. 74-75
Author(s):  
Alexey Viktorovich Kachura ◽  
◽  
Sergej V., Kolychev ◽  
Alexander Mikhailovich, Syanov
Keyword(s):  
Closed System ◽  
Jet Engine

ENHANCEMENT OF THE ATOMIZATION OF A LIQUID JET BY CAVITATION IN A NOZZLE HOLE

2001 ◽  
Vol 11 (2) ◽  
pp. 14 ◽  
Author(s):  
N. Tamaki ◽  
M. Shimizu ◽  
Hiroyuki Hiroyasu
Keyword(s):  
Liquid Jet ◽  
Nozzle Hole

NONLINEAR SIMULATION OF A HIGH-SPEED, VISCOUS LIQUID JET

1998 ◽  
Vol 8 (2) ◽  
pp. 155-178 ◽  
Author(s):  
J. H. Hilbing ◽  
Stephen D. Heister
Keyword(s):  
Viscous Liquid ◽  
High Speed ◽  
Liquid Jet ◽  
Nonlinear Simulation

TRAJECTORY AND MOMENTUM COHERENCE BREAKDOWN OF A LIQUID JET IN HIGH-DENSITY AIR CROSS-FLOW

2007 ◽  
Vol 17 (1) ◽  
pp. 47-70 ◽  
Author(s):  
Raffaele Ragucci ◽  
Alessandro Bellofiore ◽  
Antonio Cavaliere
Keyword(s):  
Cross Flow ◽  
High Density ◽  
Liquid Jet
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