Singularities in DROMO formulation. Analysis of deep flybys

Roa, Javier; Sanjurjo Rivo, Manuel y Pélaez Álvarez, Jesús (2015). Singularities in DROMO formulation. Analysis of deep flybys. "Advances in Space Research", v. 56 (n. 3); pp. 569-581. ISSN 0273-1177.


Título: Singularities in DROMO formulation. Analysis of deep flybys
  • Roa, Javier
  • Sanjurjo Rivo, Manuel
  • Pélaez Álvarez, Jesús
Tipo de Documento: Artículo
Título de Revista/Publicación: Advances in Space Research
Fecha: 1 Agosto 2015
Volumen: 56
Palabras Clave Informales: Numerical methods; Orbit propagation; Flyby trajectories; Dromo
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Física Aplicada a las Ingenierías Aeronáutica y Naval
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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The singularities in Dromo are characterized in this paper, both from an analytical and a numerical perspective. When the angular momentum vanishes, Dromo may encounter a singularity in the evolution equations. The cancellation of the angular momentum occurs in very speci?c situations and may be caused by the action of strong perturbations. The gravitational attraction of a perturbing planet may lead to rapid changes in the angular momentum of the particle. In practice, this situation may be encountered during deep planetocentric ?ybys. The performance of Dromo is evaluated in di?erent scenarios. First, Dromo is validated for integrating the orbit of Near Earth Asteroids. Resulting errors are of the order of the diameter of the asteroid. Second, a set of theoretical ?ybys are designed for analyzing the performance of the formulation in the vicinity of the singularity. New sets of Dromo variables are proposed in order to minimize the dependency of Dromo on the angular momentum. A slower time scale is introduced, leading to a more stable description of the ?yby phase. Improvements in the overall performance of the algorithm are observed when integrating orbits close to the singularity.

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ID de Registro: 36393
Identificador DC:
Identificador OAI:
Identificador DOI: 10.1016/j.asr.2015.03.019
URL Oficial:
Depositado por: Memoria Investigacion
Depositado el: 13 Jul 2015 15:31
Ultima Modificación: 13 Jul 2015 15:31
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