Main Catalog Aviation and Rocket-Space Engineering Aircraft Dynamics, Ballistics, Motion Control

Anomalies of the Earth’s gravitational field in applied problems of ballistics

Authors: Kolesnikova D.S.
Published in issue: #6(59)/2021
DOI: 10.18698/2541-8009-2021-6-709
Category: Aviation and Rocket-Space Engineering \| Chapter: Aircraft Dynamics, Ballistics, Motion Control
Keywords: full vector of the gravitational field strength, anomalous gravitational field, Earth ellipsoid, Krasovsky ellipsoid, central gravitational field, model of the Earth’s figure, mathematical modeling, trajectory of an aircraft
Published: 08.07.2021

The paper considers the most common gravitational models in ballistics problems used in calculating the trajectories of aircraft movement: the central gravitational field, the PZ-90 gravitational model, the Krasovsky normal model. A comparative analysis of various Earth’s gravitational models with varying degrees of accuracy describing the gravity field is carried out. The anomalous gravitational field is analyzed and the most characteristic areas are identified, in which it is not recommended to neglect the gravitational field influence. The influence is shown of anomalous gravitational field on the results of modeling gravity models. The estimation of the methodological errors of the gravitational field models is carried out. Recommendations on the appropriateness of using a particular model have been formulated.

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