A Study on the Turbopump Rotordynamic Characteristics due to Bearing Housing Structural Flexibility

Seong Min Jeon; Suk-Hwan Yoon; Jinhan Kim

A Study on the Turbopump Rotordynamic Characteristics due to Bearing Housing Structural Flexibility

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베어링 하우징의 구조 유연성에 따른 터보펌프 회전체동역학 특성 연구

Type: Proceeding

Author: Seong Min Jeon (한국항공우주연구원) Suk-Hwan Yoon (한국항공우주연구원) Jinhan Kim (한국항공우주연구원)

Journal: The Korean Society of Propulsion Engineers 한국추진공학회 학술대회논문집 한국추진공학회 2013년도 제40회 춘계학술대회 논문집

Published: 2013.5

Pages: 388 - 394 (7page)

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A Study on the Turbopump Rotordynamic Characteristics due to Bearing Housing Structural Flexibility

Research history (11)

2023

Critical Speed Analysis of a Turbopump for a 100 tonf Class Staged Combustion Liquid Rocket Engine

Seong Min Jeon 한국추진공학회 학술대회논문집 2023.05 Proceeding

2020

Investigation on the Dynamic Characteristics of Turbopump for the 75 Ton Class Engine Hot Firing Tests

Seong Min Jeon , Chang-Ho Choi 한국추진공학회 학술대회논문집 2020.11 Proceeding

2015

Critical Speed Analysis of a 7 Ton Class Liquid Rocket Engine Oxidizer Pump

Seong Min Jeon , Suk-Hwan Yoon , Chang-Ho Choi Journal of Aerospace System Engineering 2015.03 Academic journal

2014

A Study on the Turbopump Rotordynamic Characteristics due to Bearing Housing Structural Flexibility

Seong Min Jeon , Suk-Hwan Yoon , Jinhan Kim Journal of the Korean Society of Propulsion Engineers 2014.04 Academic journal

2013

Critical Speed Analysis of a 7 Ton Class Liquid Rocket Engine Oxidizer Pump

Seong Min Jeon , Suk-Hwan Yoon , Jinhan Kim 항공우주시스템공학회 학술행사 논문집 2013.05 Proceeding

A Study on the Turbopump Rotordynamic Characteristics due to Bearing Housing Structural Flexibility

Seong Min Jeon , Suk-Hwan Yoon , Jinhan Kim 한국추진공학회 학술대회논문집 2013.05 Proceeding

2012

Critical Speed Analysis of a 75 Ton Class Liquid Rocket Engine Turbopump due to Load Characteristics

Seong Min Jeon , Hyun D. Kwak , Soon-Sam Hong and others 1 Journal of the Korean Society of Propulsion Engineers 2012.08 Academic journal

Critical Speed Analysis of a 7 Ton Class Liquid Rocket Engine Turbopump

Seong Min Jeon , Jinhan Kim 한국추진공학회 학술대회논문집 2012.05 Proceeding

2011

Critical Speed Analysis of a 75 Ton Class Liquid Rocket Engine Turbopump due to Load Characteristics

Seong Min Jeon , Hyun D. Kwak , Soon-Sam Hong and others 1 한국추진공학회 학술대회논문집 2011.11 Proceeding

2008

Critical Speed and Rotordynamic Stability Prediction of a 75 ton Class Liquid Rocket Engine Turbopump

전성민 , 광현덕 , 윤석환 and others 1 한국항공우주학회 학술발표회 초록집 2008.04 Proceeding

2005

Critical Speed Analysis of the Liquid Rocket Turbopump

Seong Min Jeon , Hyun Duck Kwak , Suk Hwan Yoon and others 1 Journal of the Korean Society for Aeronautical & Space Sciences 2005.06 Academic journal

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A rotordynamic analysis is performed for a turbopump of 7 ton class liquid rocket engine considering bearing housing structural flexibility. Stiffness and damping characteristics of ball bearings and pump noncontact seals are reflected in a rotordynamic model. A dynamic model of bearing housing with lumped mass and stiffness is also applied to the rotordynamic analysis. Rotor critical speed and onset speed of instability are predicted from synchronous rotor mass unbalance response and complex eigenvalue analyses. The bearing housing structural flexibility effect on rotordynamic characteristics is investigated for the both of bearing loaded and unloaded conditions respectively. From the numerical analysis, it is found that the effect of the housing structural flexibility significantly reduces the rotor critical speed and onset speed of instability.

#Liquid Rocket Engine(액체로켓엔진) #Turbopump(터보펌프) #Rotordynamics(회전체동학) #Critical Speed(임계속도) #Structural Flexibility(구조 유연성)

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2. 회전체동역학 모델
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UCI(KEPA) : I410-ECN-0101-2014-570-002551071

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