Influence of some characteristic parameters on the low frequency instability in bi-propellant rocket engines

Meccanica ◽  
1967 ◽  
Vol 2 (2) ◽  
pp. 109-117
Author(s):  
Corrado Casci ◽  
Franco Chiesi ◽  
Umberto Ghezzi
Keyword(s):  
Low Frequency ◽  
Frequency Instability ◽  
Rocket Engines ◽  
Characteristic Parameters ◽  
Low Frequency Instability ◽  
Propellant Rocket

scholarly journals Low-Frequency Instability Induced by Hopf Bifurcation in a Single-Phase Converter Connected to Non-Ideal Power Grid

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 62871-62882
Author(s):  
Hong Chen ◽  
Wenqian Yu ◽  
Zhigang Liu ◽  
Qixiang Yan ◽  
Ibrahim Adamu Tasiu ◽  
...  
Keyword(s):  
Hopf Bifurcation ◽  
Single Phase ◽  
Power Grid ◽  
Low Frequency ◽  
Frequency Instability ◽  
Phase Converter ◽  
Low Frequency Instability

scholarly journals Exploring the links between volcano flank collapse and the magmatic evolution of an ocean island volcano: Fogo, Cape Verde

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mélodie-Neige Cornu ◽  
Raphaël Paris ◽  
Régis Doucelance ◽  
Patrick Bachélery ◽  
Chantal Bosq ◽  
...  
Keyword(s):  
Large Scale ◽  
Low Frequency ◽  
Frequency Instability ◽  
Cape Verde ◽  
Magma Storage ◽  
Ocean Island ◽  
Flank Collapse ◽  
Time Space ◽  
Before And After ◽  
Low Frequency Instability

AbstractMass-wasting of ocean island volcanoes is a well-documented phenomenon. Massive flank collapses may imply tens to hundreds of km3 and generate mega-tsunamis. However, the causal links between this large-scale, low-frequency instability, and the time–space evolution of magma storage, crystal fractionation/accumulation, lithospheric assimilation, and partial melting remains unclear. This paper aims at tracking time variations and links between lithospheric, crustal and surface processes before and after a major flank collapse (Monte Amarelo collapse ca. 70 ka) of Fogo volcano, Cape Verde Islands, by analysing the chemical composition (major, trace elements, and Sr–Nd–Pb isotopes) and age-controlled stratigraphy (K–Ar and Ar–Ar dating) of lavas along vertical sections (Bordeira caldera walls). The high-resolution sampling allows detecting original variations of composition at different time-scales: (1) a 60 kyrs-long period of increase of magma differentiation before the collapse; (2) a 10 kyrs-long episode of reorganization of magma storage and evacuation of residual magmas (enriched in incompatible elements) after the collapse; and (3) a delayed impact at the lithospheric scale ~ 50 kyrs after the collapse (increasing EM1-like materiel assimilation).

Low-frequency instability in semi-insulator GaAs

1966 ◽  
Vol 54 (6) ◽  
pp. 890-891 ◽  
Author(s):  
J. Bohm ◽  
G.W. Farnell
Keyword(s):  
Low Frequency ◽  
Frequency Instability ◽  
Low Frequency Instability
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