RECONSTRUCTION OF ATTITUDE DYNAMICS OF FREE FALLING UNITS
2015 (English)In: EUROPEAN ROCKET AND BALLOON: PROGRAMMES AND RELATED RESEARCH, 2015, 107-113 p.Conference paper (Refereed)Text
Attitude reconstruction of a free falling sphere for the experiment Multiple Spheres for Characterization of Atmosphere Temperatures (MUSCAT) is studied in this paper. The attitude dynamics is modeled through Euler's rotational equations of motion. To estimate uncertain parameters in this model such as the matrix of inertia and the lever arm for the dynamic pressure with respect to the center of mass, the dynamics reconstruction can be formulated as an optimization problem. The goal is to minimize the deviation between the measurements and the propagation from the system equations. This approach was tested against a couple of flight data sets which correspond to different periods of time. The result is very reasonable compared to the laboratory test. The estimate can be improved further through allowing drag coefficients variable and taking advantage of measurements from a magnetometer in numerical calculation.
Place, publisher, year, edition, pages
2015. 107-113 p.
, ESA Special Publications, ISSN 0379-6566 ; 730
Computational Mathematics Applied Mechanics
IdentifiersURN: urn:nbn:se:kth:diva-186693ISI: 000373647300012ISBN: 978-92-9221-294-0OAI: oai:DiVA.org:kth-186693DiVA: diva2:934133
22nd ESA Symposium on European Rocket and Balloon Programmes and Related Research, JUN 07-12, 2015, Tromso, NORWAY
QC 201606082016-06-082016-05-132016-06-08Bibliographically approved