지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.15 Number.4
- 발행연도
- 2014.12
- 수록면
- 444 - 453 (10page)
이용수
초록· 키워드
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A throttleable rocket engine enables operational possibilities such as the docking of spacecraft, maneuvering in a certain orbit and landing on a planet’s surface, altitude control, and entrance to atmosphere-less planets. Thus, throttling methods have long been researched. However, dual-manifold injectors, which represent one throttling method, have been investigated less than others. In this study, dual-manifold and single-manifold injectors were compared to determine the characteristics of dual manifold injectors. Also, the effects of gas injection were investigated with various F/O ratios. To investigate the characteristics, mass flow rate, spray pattern, spray angle, and droplet size were measured. The spray angle and droplet size were captured by indirect photography. About 30 images were taken to assess the spray patterns and spray angle. Also, 700 images were analyzed to understand the droplet distribution and targeting area, moving to the right from the centerline with 1.11-㎝ intervals. The droplet size was obtained from an image processing procedure. From the results, the spray angle showed two transition regions, due to swirl momentum in the swirl chamber regardless of the F/O ratio. The droplet size showed similar trends in both dual-manifold and single-manifold injectors except in the low mass flow rate region. In the case of the dual- manifold injector, the spray cone was not fully developed in the low mass flow rate region due to low angular momentum in the swirl chamber.
목차
Abstract
1. Introduction
2. Experimental Apparatus and Methods
3. Result and Discussion
4. Conclusions
References
참고문헌 (11)
참고문헌 신청
1. [학술대회논문] - G. A. Dressler / 2006 / Summary of Deep Throttling Rocket Engine with Emphasis on Apollo LMDE / 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit
2. [학술지(정기간행물)] - Matthew J. Casiano / 2010 / Liquid-Propellant Rocket Engine Throttling: A Comprehensive Review / Journal of Propulsion and Power 26 (5)
3. [학술지(정기간행물)] - Y. Hardalupas / 1994 / Characteristics of Sprays Produced by Coaxial Airblast Atomizers / Journal of Propulsion and Power 10 (4)
4. [학술지(정기간행물)] - J. C. Lasheras / 2000 / Liquid Jet Instability and Atomization in A Coaxial Gas Stream / Annual Review of Fluid Mechanics 32 : 275 ~ 308
5. [학위논문] - J. H. Im / 2010 / Spray Characteristics of Gas-Liquid Swirl Coaxial Injectors for Liquid Rocket Engines / 박사
2. [학술지(정기간행물)] - Matthew J. Casiano / 2010 / Liquid-Propellant Rocket Engine Throttling: A Comprehensive Review / Journal of Propulsion and Power 26 (5)
3. [학술지(정기간행물)] - Y. Hardalupas / 1994 / Characteristics of Sprays Produced by Coaxial Airblast Atomizers / Journal of Propulsion and Power 10 (4)
4. [학술지(정기간행물)] - J. C. Lasheras / 2000 / Liquid Jet Instability and Atomization in A Coaxial Gas Stream / Annual Review of Fluid Mechanics 32 : 275 ~ 308
5. [학위논문] - J. H. Im / 2010 / Spray Characteristics of Gas-Liquid Swirl Coaxial Injectors for Liquid Rocket Engines / 박사
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UCI(KEPA) : I410-ECN-0101-2016-558-000990476