Open AccessRoll Amplification of Solid Rocket Motor in LAPAN Sounding Rocket
Author(s) -
Oka Sudiana,
Paolo Teofilatto
Publication year - 2020
Publication title -
jurnal teknologi dirgantara/jurnal teknologi dirgantara
Language(s) - English
Resource type - Journals
eISSN - 2597-7849
pISSN - 1412-8063
DOI - 10.30536/j.jtd.2020.v18.a3351
Subject(s) - sounding rocket , aerospace engineering , rocket (weapon) , solid fuel rocket , depth sounding , flight test , atmosphere (unit) , physics , environmental science , meteorology , geology , engineering , propellant , oceanography
Sounding rockets have been used for scientific research and implemented in meteorological and upper atmosphere studies since the late 1950s. Sounding rockets are sub-orbital carriers that follow a parabolic trajectory from launch to landing. Supporting the roadmap of Satellite Launch Vehicle development, LAPAN had launch The Sounding Rocket Program. A sensitive amplification from the production of an unpredicted roll rate was detected during the boost of the sounding rocket, despite of the tail wings in cruciform configuration at last flight test. One of this phenomenon can be influenced by the flow field of the combustion chamber during boosting time. The basic idea of this research is to model the roll amplification effect as a swirling motion of portion of exhaust gas that participate to the rotation dynamics of the rocket rather than to exit immediately flow the combustion chamber. Available flight data where is obtained from last flight test presented. It is shown the presence of a significant roll amplification when solid rocket motor is used during burning time. The result has a good agreement to presence of a portion of exhaust gas influence an unpredicted roll amplification.