DOI QR코드

DOI QR Code

Schlieren Visualization of the Thrust Vector Flowfield in a Supersonic Two-Dimensional Nozzle

2차원 초음속 추력편향노즐을 이용한 쉴리렌 가시화 실험연구

  • Received : 2011.09.14
  • Accepted : 2011.09.27
  • Published : 2011.09.30

Abstract

The thrust vectoring concept has been used for use in new advanced supersonic aircraft. This study presents the performance characteristics of the thrust vectoring nozzle by visualizing the shock behaviors with Schlieren method. The scaled models were designed and manufactured to see the shock behaviors of the various airflow condition. Also we executed experimental tests to see the geometrical effects of the thrust vector nozzle by changing pitch angle and length of pitch flaps. From this study we could understand the supersonic flow characteristics of the thrust vector nozzle. The total thrust of thrust vector nozzle is diminished by increasing the flap angle. But there is an optimum flap length ratio for attaining the highest thrust level and proper pitch effect.

Keywords

References

  1. Herbst, W. B., 1980, "Future Fighter Technologies," J. Aircraft, Vol. 17(8), pp. 561-566. https://doi.org/10.2514/3.44674
  2. Nelson, B. D., and Nicolai, L. M., 1981, "Application of Multi Function Nozzle to Advanced Fighters," AIAA-81-2618.
  3. Richey, G. K., Suber, L. E., and Berrier, B. L., 1983, "Airframe Propulsion Integration for Fighter Aircraft," AIAA-83-0084.
  4. Herrick, P. W., 1985, "Propulsion Influences on Air Combat," AIAA-85-1457.
  5. Gallaway, C. R., and Osborn, R. F., 1985, "Aerodynamics Perspective of Super maneuverability," AIAA-85-4068.
  6. Frassinelli, M. C., and Carson, G. T., Jr., 1990, "Effect of Tail Size Reductions on Longitudinal Aerodynamic Characteristics of a Three-Surface F-15 Model with Non-axisymmetric Nozzles," NASA TP-3036.
  7. Kim, Y. H., Choi, S. M., and Chang, H. S., 2009, "Investigation of the 2D Convergent-Divergent Thrust Vectoring Nozzle," Proc. KSPE Fall Conference, pp. 483-486.
  8. International Organization for Standardization, 2005, ISO 9300:2005, Measurement of Gas Flow by means of Critical Flow Venturi Nozzles.
  9. Krothapalli, A., Hsia, Y., Baganoff, D. and Karamcheti, K., 1986, "The Role of Screech Tones in Mixing of an Underexpanded Rectangular Jet," J. of Sound and Vibration, Vol. 106(1), pp. 119-143 https://doi.org/10.1016/S0022-460X(86)80177-8
  10. Eastman, D. W. and Radtke, L. P., 1963, "Location of the Normal Shock Wave in the Exhaust Plume of a Jet," AIAA Journal, Vol. 1(4), pp. 918-919. https://doi.org/10.2514/3.1672
  11. Tam, C. K. W., 1975, "Supersonic Jet Noise Generated by Large Scale Disturbances," J. of Sound and Vibration, Vol. 38(1), pp. 51-79. https://doi.org/10.1016/S0022-460X(75)80020-4
  12. Meier, G. E. A., Selerowicz, W. C. and Szumowski, A. P., 1990, "A Nozzle Generating Low Jet Noise," J. of Sound and Vibration, Vol. 136(1), pp. 65-73. https://doi.org/10.1016/0022-460X(90)90938-V