Document Type : Research Paper

Authors

1 Faculty New Technologies and Aerospace Engineering, Shahid Beheshti University, Tehran Iran

2 Associate Professor, Faculty of New Technologies and Aerospace Engineering, Shahid Beheshti University, Tehran Iran

Abstract

A numerical dynamic-aerodynamic interface for simulating the separation dynamics of constrained strap-on boosters jettisoned in the atmosphere is presented. Two commercial solvers: a 6DOF multi-body dynamic solver and a numerical time-dependent flow solver are integrated together with an interface code to constitute a package that presents real-time dynamic/aerodynamic coupled analysis. Dynamic unstructured mesh approach is employed using local remeshing methods in respect of bodies motion with a second-order upwind accurate 3D Euler solver. This interface can simulate multi body separation dynamics interaction with aerodynamic effects to complete separation mechanisms like springs, thrusters, joints and so on. The flow solver is validated by the Titan IV launch vehicle experimental data. The separation integration is used for a typical launch vehicle with two strap-on boosters using spring ejector mechanism and spherical constraint joints acting in the dense atmosphere. Hence, the aim of the presented interface is to facilitate the integration of complicated separation mechanisms with a full numerical CFD aerodynamic solver.

Keywords

Main Subjects

  1. Jafari, M., Toloei, A., Ghasemlu, S., Parhizkar, H.” Simulation of Strap-on Boosters Separation in the Atmosphere”, International Journal of Engineering (IJE), Transactions B: Applications, Vol. 28, No. 2, (February 2015), pp. 164-171.
  2. Meakin, R.L., and Suhs, N. E., “Unsteady Aerodynamic Simulation of Multiple Bodies in Relative Motion” AIAA Paper 89-1996, 1989.
  3. Lochan, R., and Adimurthy, V., “Separation Dynamics of Strap-On Boosters in the Atmosphere,” Journal of Guidance, Control, and Dynamics, Vol. 20, No. 4, 1997, pp. 633–639.
  4. Lijewski, L. E., and Suhs, N. E., “Time-Accurate Computational Fluid Dynamics Approach to Transonic Store Separation Trajectory Prediction,” Journal of Aircraft, Vol. 31, No. 4, 1994, pp. 521–526.
  5. Taylor, S., and Wang, J. C. T., “Launch-Vehicle Simulations Using a Concurrent, Implicit Navier–Stokes Solver,” Journal of Spacecraft and Rockets, Vol. 33, No. 5, 1996, pp. 601–606.
  6. Azevedo, J. L. F., and Moraes, P., Jr., “Code Validation for High-Speed Flow Simulation Over Satellite Launch Vehicle,” Journal of Spacecraft and Rockets, Vol. 33, No. 1, 1996, pp. 15–21.
  7. Seongjin Choi, Chongam Kima, Oh-Hyun Rho, Jeong-joo Park, “Numerical Analysis on Separation Dynamics of Strap-On Boosters in the Atmosphere”, Journal of Spacecraft and Rockets, Vol. 39, No. 3, May–June 2002
  8. Soon-Heum Ko and Chongam Kim, “Separation Motion of Strap-On Boosters with Base Flow and Turbulence Effects”, Journal of Spacecraft and Rockets, Vol. 45, No. 3, May–June 2008
  9. “Transonic store separation using unstructured cfd with dynamic meshing”, Technical Report AIAA-2003-3913
  10. O. Snyder, E. K. Koutsavdis, and J. S. R. Anttonen, “Simulations of 6-DOF Motion with a Cartesian Method”. Scott M. Murman, ELORET Moffett Field, CA. Michael J. Aftosmis, NASA Ames Research Center, Moffett Field, CA. Marsha J. Berger, Courant Institute, New York, NY. 41st AIAA Aerospace Sciences Meeting, January 6-9, 2003 / Reno, NV.
  11. O. Snyder, E. K. Koutsavdis, and J. S. R. Anttonen, “Transonic store separation using unstructured cfd with dynamic meshing”, Technical Report AIAA-2003-3913.
  12. Bandu N. Pamadi, Nathaniel J. Hotchko, Jamshi Samareh, Peter F. Covell, and Paul V. Tartabini, “Simulation and Analyses of Multi-Body Separation in Launch Vehicle Staging Environment”, 14th AIAA/AHI Space Planes and Hypersonic Systems and Technologie Conference AIAA 2006-803.
  13. Kelly J. Murphy, Pieter G. Buning, Bandu N. Pamadi, William I. Scallion, Kenneth M. Jones, “Overview of Transonic to Hypersonic Stage Separation Tool Development for Multi-Stage-To-Orbit Concepts”, NASA Langley Research Center, AIAA 2004-2595.
  14. Pamadi, B.N., Neirynck, T.A., Covell, P.F., Hotchko, N.J., and Bose, D.M., “Simulation and Analyses of Staging Maneuvers of Next Generation Reusable Launch Vehicles”, AIAA Paper 2004-5185.
  15. Pamadi, B.N., Neirynck, T.A., Hotchko, N.J., Tartabini, P.V., Scallion, W.I., Murphy, K.J., and Covell, P. F., “Simulation and Analyses of Stage Separation of Two-Stage Reusable Launch Vehicles”, AIAA Paper 2005-3247.
  16. Bandu N. Pamadi, Paul V. Tartabini, Mathew D. Toniolo, Carlos M. Roithmayr, Christopher Karlgaard, and Jamshid Samareh, “Application of CFE/POST2 for Simulation of Launch Vehicle Stage Separation”, NASA Langley Research Center, Hampton VA 23681.
  17. Toniolo, M. D., Tartabini, P. V., Pamdai, B. N., and Hotchko, N., “Constraint force equation methodology for modeling multi-body stage separation dynamics”, 46th AIAA Aerospace Sciences Meeting & Exhibit, 7-10 January 2008.
  18. Tartabini, P. V., Roithmayr, C., Toniolo, M. D., Karlgaard, C., and Pamdai, B. N., “Verification of the constraint force equation methodology for modeling multi-body stage separation”, AIAA Modeling and Simulation Technologies Conference, 18-21 August 2008.
  19. Jafari, M., Toloei, A., Ghasemlu, S., Parhizkar, H. “Simulation of Store Separation using Low-Cost CFD with Dynamic Meshing”, International Journal of Engineering Transactions B: Applications, Vol. 27, No. 5, May 2014, pp. 853-863.
  20. Jafari, M., Toloei, A., Ghasemlu, S., Parhizkar, H. “6dof Simulation of Store Separation using CFD”, The 11th conference of Iranian Aerospace society, March 2012, Tehran, Iran.
  21. Dalle, D. J., Rogers, S. E., Lee, H. C., Chan, W. M., "Inviscid and Viscous CFD Analysis of Booster Separation for the Space Launch System Vehicle", 54th AIAA Aerospace Sciences Meeting. January 2016, 10.2514/6.2016-0797.
  22. Rogers, S. E., Dalle, D. J., Chan, W. M., CFD Simulations of the Space Launch System Ascent Aerodynamics and Booster Separation, AIAA Paper 2015-0778, 53rd AIAA Aerospace Sciences Meeting, January, 2015.