TY - JOUR ID - 72441 TI - Simulation of Strap-On Boosters Separation in the Atmosphere JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Jafari, Mostafa AU - Parhizkar, Hamid AU - Ghasemlu, Sadjad AD - , Shahid Beheshti University AD - Department of Aerospace Engineering, Amirkabir University Y1 - 2015 PY - 2015 VL - 28 IS - 2 SP - 164 EP - 171 KW - numerical dynamic KW - aerodynamic interface KW - strap KW - on boosters separation KW - 6 KW - DOF multi body dynamic solver KW - Constraint For­ce Equation Methodology KW - numerical time dependent Euler flow solver DO - N2 - A numerical dynamic-aerodynamic interface for simulating the separation dy­n­a­m­ic­s of co­n­­s­t­r­a­i­ned strap-on boosters jettisoned in the atmosphere is presented. A 6-DOF multi body dynamic solver ،using Constraint For­ce Equation Methodology is coupled with a numerical time dependent Euler flow solver. An automatic dyna­m­i­­c mesh updating proc­e­d­ure is employed using smoothing and local remeshing technique in respect of  bodies motion during separation. This interface can simulate multi body se­p­a­r­a­tion problems such as strap-on boosters separation as a result of full separation mechanisms like springs, thrusters, joints and so on, interaction with aerodynamic effects .The flow solver is validated by the Titan-IV launch vehicle experimental data. The full 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 presented interface is to facilitate integration of complicated separation mechanisms simulation with a full numerical CFD aerody­n­a­m­ic solver. UR - https://www.ije.ir/article_72441.html L1 - https://www.ije.ir/article_72441_ed7b4e94eba4514b12231b9911c7d495.pdf ER -