The group-theoretic analysis for d'Alembert's solutions of the basic equation of exterior ballistics

Authors

  • V. I. Lehenkyi

DOI:

https://doi.org/10.15407/dopovidi2015.02.014

Keywords:

ballistics, Bernoulli equation, Riccati equation

Abstract

We consider the basic equation of exterior ballistics and prove that all specializations of the drug function presented by d'Alembert in 1744 transform this equation to some Lie–Sheffers equation. Due to this hidden property, it can be converted to the classical Bernoulli or Riccati equations.

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References

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Drach J. Ann. sci. Ecole Norm. Super. Ser. 3, 1920, 37: 1–94.

Kourensky M. C. r. Acad. Sci., 1931, 193: 571–572.

Kurenskyy M.K. Flight of a projectile: The main problem of external ballistics of projectile flight, Kyiv: Vud-vo VUAN, 1934 (in Ukrainian).

Kamke E. Reference book on usual differential equations. 4-th ed., Moscow: Nauka, 1971 (in Russian).

Lee S. Theory of groups of transformations. Pt. 3, Moscow: Izhevsk: Izhev. in-t kompiuter. issledovanii, 2013 (in Russian).

Lee S. Symmetries of differential equations. Lectures on continuous groups with geometric and other applications. Vol. 2, Moscow: Izhevsk: Reguliarnaia i haoticheskaia dinamika, 2011 (in Russian).

Yakovenko H. N. Differential equations with fundamental decisions: Sofus Lee et al. Moscow: Fizmatkniha, 2006 (in Russian).

Published

08.01.2025

How to Cite

Lehenkyi, V. I. (2025). The group-theoretic analysis for d’Alembert’s solutions of the basic equation of exterior ballistics . Reports of the National Academy of Sciences of Ukraine, (2), 14–18. https://doi.org/10.15407/dopovidi2015.02.014