scholarly journals МОДЕЛИРОВАНИЕ ТЕЧЕНИЯ ГАЗА В КАМЕРЕ ЖРД С УЧЕТОМ ЕЕ ОХЛАЖДЕНИЯ

2018 ◽  
Vol 26 (4) ◽  
pp. 40-45
Author(s):  
И. Д. Дубровский ◽  
В. Л. Бучарский
Keyword(s):  
Heat Exchange ◽  
Heat Balance ◽  
Gas Dynamics ◽  
Rocket Engine ◽  
Liquid Rocket Engine ◽  
System Of Differential Equations ◽  
One Dimensional ◽  
Equations Of Gas Dynamics ◽  
Liquid Rocket ◽  
The Heat Balance

The problem of one-dimensional motion of gas in thecombustion chamber of the liquid rocket engine, taking into account its heat exchange with the chamber wall and with the cooling liquid, is considered in the article. The results of calculating the cooling of the chamber obtained by numerically solving the system of differential equations of gas dynamics combined with the heat balance equation are presented. The analysis of the results allows to assert about the possibility of applying the proposed method in practice.

scholarly journals Analysis of Acoustic Cavitation Surge in a Rocket Engine Turbopump

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Hideaki Nanri ◽  
Hiroki Kannan ◽  
Naoki Tani ◽  
Yoshiki Yoshida
Keyword(s):  
Rocket Engine ◽  
Acoustic Cavitation ◽  
Inlet Pressure ◽  
Experimental Result ◽  
Liquid Rocket Engine ◽  
Acoustic Model ◽  
One Dimensional ◽  
Analytical Result ◽  
Inertia Model ◽  
Liquid Rocket

In a liquid rocket engine, cavitation in an inducer of a turbopump sometimes causes instability phenomena when the inducer is operated at low inlet pressure. Cavitation surge (auto-oscillation), one such instability phenomenon, has been discussed mainly based on an inertia model assuming incompressible flow. When this model is used, the frequency of the cavitation surge decreases continuously as the inlet pressure of the turbopump decreases. However, we obtained an interesting experimental result in which the frequency of cavitation surge varied discontinuously. Therefore, we employed one-dimensional analysis based on an acoustic model in which the fluid is assumed to be compressible. The analytical result qualitatively corresponded with the experimental result.

scholarly journals FLOW OF A SEMI-BOUNDED STREAM WITH FRICTION AND HEAT EXCHANGE IN THE NOZZLE CHANNEL OF A LIQUID ROCKET ENGINE

2017 ◽  
Vol 0 (2(75)) ◽  
Author(s):  
Юрій Матвійович Терещенко ◽  
Катерина Вікторівна Дорошенко ◽  
Юрій Юрійович Терещенко ◽  
Паям Гамзег
Keyword(s):  
Heat Exchange ◽  
Rocket Engine ◽  
Liquid Rocket Engine ◽  
Liquid Rocket

Unsteady Side-Load Evolution in a Liquid Rocket Engine Nozzle

2020 ◽  
Vol 57 (2) ◽  
pp. 391-397
Author(s):  
S. B. Verma ◽  
Oskar Haidn
Keyword(s):  
Rocket Engine ◽  
Liquid Rocket Engine ◽  
Side Load ◽  
Liquid Rocket

Rotordynamic analysis of a high thrust liquid rocket engine fuel (Kerosene) turbopump

2013 ◽  
Vol 26 (1) ◽  
pp. 169-175 ◽  
Author(s):  
Seong Min Jeon ◽  
Hyun Duck Kwak ◽  
Suk Hwan Yoon ◽  
Jinhan Kim
Keyword(s):  
Rocket Engine ◽  
Liquid Rocket Engine ◽  
Engine Fuel ◽  
Liquid Rocket ◽  
High Thrust

Measurements of Rotordynamic Coefficients of Hybrid Bearings With (a) a Plugged Orifice, and (b) a Worn Land Surface

2002 ◽  
Vol 124 (2) ◽  
pp. 363-368 ◽  
Author(s):  
F. Laurant ◽  
D. W. Childs
Keyword(s):  
Test Data ◽  
Land Surface ◽  
Rocket Engine ◽  
Liquid Rocket Engine ◽  
Test Results ◽  
Rotordynamic Coefficients ◽  
Hybrid Bearing ◽  
Liquid Rocket

Test results are presented for the rotordynamic coefficients of a hybrid bearing that is representative of bearings for liquid-rocket-engine turbopump applications. The bearing is tested in the following two degraded conditions: (a) one of five orifices plugged, and (b) a locally enlarged clearance to simulate a worn condition. Test data are presented at 24,600 rpm, with supply pressures of 4.0, 5.5, and 7.0 MPa, and eccentricity ratios from 0.1 to 0.5 in 0.1 increments. Overall, the results suggest that neither a single plugged orifice nor significant wear on the bearing land will “disable” a well-designed hybrid bearing. These results do not speak to multiple plugged orifices and are not an endorsement for operations without filters to prevent plugging orifices.

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