Aerospace Science and Technology
Designing a Hybrid GEO-LEO Constellation Pattern for Regional Satellite Navigation in Iran

Shahrokh Zohrabzadeh Bozorgi; Abolghasem Naghash

Articles in Press, Accepted Manuscript, Available Online from 05 November 2022

  In this paper, a few hybrid satellite constellations including combinations of LEO and GEO satellites for providing satellite navigation and positioning services for users in Iran have been designed and proposed. The performance of the constellations has been analyzed based on DOP values variations. ...  Read More

Improved Mathematical Model for Helicopters Flight Dynamics Applications

F. Saghafi; farid Shahmiri

Volume 4, Issue 3 , September 2007, , Pages 1-11

  The purpose of this paper is concerned with the mathematical model development issues, necessary for a better prediction of dynamic responses of articulated rotor helicopters. The methodology is laid out based on mathematical model development for an articulated rotor helicopters, using the theories ...  Read More