Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지

The Study of Aerodynamic Characteristics of Ram-jet with Different Intake

서로 다른 램제트 흡입구에 따른 공기역학적 특성 연구

  • Received : 2010.06.17
  • Accepted : 2010.10.14
  • Published : 2010.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

The SFRJ(Solid Fuel Ram-Jet) propulsion is attractive for projectiles because of the combination of high propulsive performance and low system complexity more than conventional projectiles. The Objective of this research was to characterize the inlet aerodynamic characteristics (center-body & pitot type) in SFRJ. Diffuser static pressure & combustion chamber pressure was tested and the AoA was changed $0^{\circ}$ and $4^{\circ}$ at Mach number of 3.0 for performance estimate. The performance study of inlet was carried out with the Schlieren system and Supersonic cold-flow system. Under mach 3.0, the center-body showed twice higher total pressure recovering ratio than the pitot type. A Computational fluid dynamic solution is applied internal flow of inlet and the solutions are compared with experimental results.

고체연료 램제트 추진의 경우 간단한 구조에 비해 높은 성능과 추진력을 얻을 수 있는 매력적인 추진기관이다. 본 연구의 목적은 두가지 유형의(스파이크 & 피토) 흡입구에 대한 공기역학적 특성을 파악함에 있다. 마하수 3.0의 실험조건에서 연소실의 압력과 $0^{\circ}$와 $4^{\circ}$의 받음각의 변화에 따라 흡입구 벽면의 압력값을 측정하였다. 본 연구는 초음속 유동장치와 쉴리렌 시스템을 이용하여 수행되었으며 동일 실험조건에서 스파이크 형이 피토 형보다 약 2배 높은 전압력 회복율을 나타내었다. 전산유체 해석을 통하여 흡입구 내부흐름을 실험결과 값과 비교 분석하였다.

Keywords

References

  1. 김윤곤, 김경무, "램제트 추진기관 기술 및 발전 동향," 한국추진공학회 제4회 학술강연회 논문집, 1995, pp.43-55
  2. Philip G Hill, and Carl R Peterson, "Mechanics and Thermodynamics of Propulsion," Addison-Wesley, New York, 1992
  3. R. Monig and M. Moll, "Ramjet Propulsion for Advance Projectiles," AGARD Conference Proceedings 526 Airbreathing Propulsion for Missiles and Projectiles, AGARD-CP-526, 1992
  4. J. T. Kegelman, R. C. Nelson, and T. J. Mueller, "The Boundary Layer on an Axisymmetric Body With and Without Spin," AIAA, Vol. 21, No. 11, 1983, pp.1485-1491 https://doi.org/10.2514/3.60151
  5. John J. Mahoney, "Inlet for Supersonic Missiles," AIAA Education Series, 1991
  6. A. L. Holzman and R. O. Maclaren, "Application of Solid Fuel Ramjet Projectile Launched at Mach Number 4.3 form a Rifled Gun," United Technologies, Contract No DAAK 10-79-C-0269
  7. Ronald G. Veraar and Picter J. M. Elands, "Design study of a Ramjet projectile with a frangible penetrator," ISOB south africa, 1998
  8. R. G. Veraar, "Ramjet Applications of the solid fuel combustion chamber," TNO Prins Maurits Laboratory, 1991
  9. K. Andersson, "A simplified method to estimate the dimension of solid fuel ramjet motors for projectiles," National Defence Research Establishment(FOA), 1999
  10. Peter Wimmerstrom, Yngve Nilsson and Nils-Erik Gunners, "Initial study of a 40mm SFRJ Projectile" National Defence Research Establishment(FOA), 1993