Browse > Article
http://dx.doi.org/10.5139/JKSAS.2016.44.3.247

Experimental Study on Unsteady-state Characteristics of a Pintle Thruster with Variable Pintle Speeds  

Hwang, Heuiseong (Dept. of Aerospace Engineering, Graduate School at Chungnam National University)
Huh, Hwanil (Dept. of Aerospace Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.44, no.3, 2016 , pp. 247-255 More about this Journal
Abstract
The purpose of this study is to investigate unsteady-state characteristics of a pintle thruster with various pintle speed. Based on steady state experimental results, non-linear pintle stroke equation is obtained and applied to the unsteady state experimental system. For the unsteady state experiments, three different pintle speeds are used: 3.10 mm/s, 5.65 mm/s, 10.83 mm/s, respectively. Results show that backward pintle stroke results in faster convergence time because of high chamber pressure during backward pintle stroke sequence. During the forward and backward process, thrust curve shows singular points. These phenomenons is caused by variation of mass flow rate, which is mainly due to changes of both chamber pressures and nozzle throat area. This behavior becomes distinctive for a faster pintle speed case.
Keywords
Experiment; Unsteady State; Pintle Actuator Speed; Pintle Stroke Control;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kim, S., An Experimental Study of Pressure Control Method for Modulatable Thruster Applications, Master's Thesis, ChungNam National Univ., Daejeon, ROK, 2013.
2 Kim, J. and Park, J., "Investigation of Pintle Shape Effect on the Nozzle Performance," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 36, No. 8, 2008, pp. 790-796.   DOI
3 Napior, J. and Garmy, V., "Controllable Solid Propulsion For Launch Vehicle And Spacecraft Application," AIAA 2006-905, Oct. 2006.
4 Ronald W. H., Gary N. H. and Wiley J. L., Space Propulsion Analysis and Design, McGraw-Hill, Ohio, U.S.A., 1995.
5 Choi, J. and Huh, H., "Preliminary Experimental Results of Pressure Control for Modulatable Thruster Applications," The KSPE Fall Conference, 2011, pp. 18-21.
6 Kim, S., Hwang, H. and Huh, H., "Experimental Study of Pressure Control Methods for Modulatable Thruster Applications," The KSPE Spring Conference, 2013, pp. 529-532.
7 Heo, J., Jeong, K. and Sung, H., "Numerical Study of the Dynamic Characteristics of Pintle Nozzles for Variable Thrust," Journal of Propulsion and Power, Vol. 31, No. 1, 2015, pp. 230-237.   DOI
8 Hwang, H. and Huh, H., "Preliminary Experimental Results on Pintle Thruster with Improved Choked Flow Section," The KSAS Fall Conference, 2013, pp. 335-338.
9 Hwang, H. and Huh, H., "Dynamic Characteristics of Pintle Thruster with Pintle Speed," The KSAS Spring Conference, 2014, pp. 434-436.
10 Lee, J., "A Study on the Static and Dynamic Characteristics of Pintle-Perturbed Conical Nozzle Flows," Ph.D. Dissertation, Dept. of Mechanical Engineering, Yonsei Univ., Seoul, ROK, 2012.
11 Noh, S., Kim, J., and Huh, H., "Performance Analysis of the Pintle Thruster Using 1-D simulation - II: Unsteady State Characteristics," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 43, No. 4, 2015, pp. 311-317.   DOI
12 Kim, H. and Huh, H., "Uncertainty Analysis of Thrust Measurement of a Supersonic Wind Tunnel," The KSAS Spring Conference, 2003, pp. 538-541.
13 Choi, J., The concept of Uncertainty and Estimation method, KRISS.