Optical Diagnostics in a High-Pressure Combustor with Gaseous Oxygen and Kerosene

2019 ◽  
Vol 35 (1) ◽  
pp. 13-25 ◽  
Author(s):  
Henry C. Balance ◽  
Oleksandr Bibik ◽  
Timothy S. Cook ◽  
Stephen Danczyk ◽  
S. Alexander Schumaker ◽  
...  
Keyword(s):  
High Pressure ◽  
Optical Diagnostics ◽  
Gaseous Oxygen

Premixing rocket engine injectors for high pressure gaseous oxygen and hydrogen

1999 ◽  
Author(s):  
William Knuth ◽  
Daniel Gramer ◽  
Christopher St. Clair
Keyword(s):  
High Pressure ◽  
Rocket Engine ◽  
Gaseous Oxygen

scholarly journals Hot-fire testing of liquid oxygen/hydrogen single coaxial injector at high-pressure conditions with optical diagnostics

2019 ◽  
Author(s):  
D.I. Suslov ◽  
J.S. Hardi ◽  
B. Knapp ◽  
M. Oschwald
Keyword(s):  
High Pressure ◽  
High Speed ◽  
Optical Diagnostics ◽  
Liquid Oxygen ◽  
Experimental Investigations ◽  
Rocket Engines ◽  
Chamber Length ◽  
Substantial Progress ◽  
Liquid Rocket ◽  
Coaxial Injector

Injector behavior is of utmost importance for the performance and stability of liquid rocket engines (LREs). A major problem is getting a highly efficient homogeneous mixture and effective chemical reaction of fuels at minimum chamber length. Despite substantial progress in numerical simulations, a need for experimental data at representative conditions for development and validation of numerical design tools still exists. Therefore, in the framework of the DLR-project “ProTau,” the authors have performed tests to create an extended data base for numerical tool validation for high-pressure liquid oxygen (LOx) / hydrogen combustion. During the experimental investigations, a windowed DLR subscale thrust chamber model “C” (designated BKC) has been operated over a broad range of conditions at reduced pressures of approximately 0.8 (4 MPa), 1 (5 MPa), and 1.2 (6 MPa) with respect to the thermodynamic critical pressure of oxygen. Liquid oxygen and gaseous hydrogen (GH2) have been injected through a single coaxial injector element at temperatures of ~ 120 and ~ 130 K, respectively. High-speed optical diagnostics have been implemented, including imaging of OH* emission and shadowgraph imaging at frequencies from 8 up to 10 kHz to visualize the flow field.

Study of radial burning of holes in titanium shells of high-pressure tanks with oxygen containing gas

2020 ◽  
pp. 92-99
Author(s):  
Nikolay N. TUPITSYN
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
Hole Size ◽  
Engineering Systems ◽  
Initial Value ◽  
Gaseous Oxygen ◽  
Orifice Area ◽  
Emergency Situations ◽  
Pressure Flows ◽  
Increased Pressure

The paper presents the results of the experimental study of radial burning of holes in titanium samples simulating a fragment of the shell of a high-pressure tank filled with gaseous oxygen or oxygen-containing gas. The tests revealed the possibility of a large increase in the orifice area (140–2 250 times compared with the initial value) as a result of the burning of small through-holes when oxygen-containing gas of the increased pressure flows through them and allowed us to determine the apparent radial burning rate at various oxygen concentrations. The proposed mathematical dependence of the hole size in the titanium shell after their radial burning on the process parameters may be of interest for the analysis of processes occurring in engineering systems in case of some off-nominal and emergency situations. Key words: radial burning of holes, titanium tank, oxygen-containing gas, off-nominal and emergency situations.

High Speed Optical Diagnostics in a High Pressure, RP-2/GOx Fueled Combustor

2017 ◽  
Author(s):  
Henry C. Ballance ◽  
Oleksandr Bibik ◽  
Timothy S. Cook ◽  
Stephen Danczyk ◽  
Stephen A. Schumaker ◽  
...  
Keyword(s):  
High Pressure ◽  
High Speed ◽  
Optical Diagnostics

Kinetics and Rate Constants of Reactions Leading to Hydration of and in Gaseous Oxygen, Argon, and Helium Containing Traces of Water

1972 ◽  
Vol 50 (14) ◽  
pp. 2230-2235 ◽  
Author(s):  
J. D. Payzant ◽  
A. J. Cunningham ◽  
P. Kebarle
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Gas Phase ◽  
Mass Spectrometer ◽  
Rate Constants ◽  
Gas Phase Reactions ◽  
Third Order ◽  
Gaseous Oxygen ◽  
Time Resolved ◽  
Pulsed Electron Beam

The rate constants for the forward and reverse components of gas phase reactions:[Formula: see text]were measured with a pulsed electron beam, time resolved detection high pressure mass spectrometer at 300 °K. O2, Ar, and He at pressures from 1–7 Torr were used as third gas M. The forward reactions were found to be third order and the reverse reactions second order. Establishment of the equilibria could also be observed.

Optical Diagnostics for Sprays at High Pressure

2020 ◽  
pp. 111-156
Author(s):  
Mark Linne ◽  
Zachary Falgout ◽  
Mattias Rahm
Keyword(s):  
High Pressure ◽  
Optical Diagnostics

Ignition of Nonmetallic Materials by Impact of High-Pressure Gaseous Oxygen

2009 ◽  
pp. 218-218-15 ◽  
Author(s):  
GE Moffett ◽  
MD Pedley ◽  
N Schmidt ◽  
RE Williams ◽  
D Hirsch ◽  
...  
Keyword(s):  
High Pressure ◽  
Gaseous Oxygen
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