The Study of Hypergravity and Flight Stress on Different Cell Lines Function in Sounding Rocket

Z. Hajebrahimi; L. Alidoust; M. Arabian; E. Alavi; M. Ebrahimi; M. Bahrami

Volume 6, Issue 4 , January 2014, , Pages 37-42

Abstract
  Stress environment of space flights including hypergravity and microgravity effect cell functions and processes. We studied effect of hypergravity and flight stress on function, death, growth and cellular damage of five cell lines including human vascular endothelial cells, rat bone marrow stromal cells, ...  Read More

Required Velocity Calculation in the Presence Of Atmosphere Effect in C* Matrix

A. Mohammadi; E. Taheri; J. Roshanian; M. Bahrami

Volume 4, Issue 1 , July 2011, , Pages 69-78

Abstract
  In this research a perturbation based guidance method is developed for non-Keplerian problem. Problem is linearized in the presence non-gravitational forces like aerodynamic, so it can improve the performance of C* guidance for reentry problems. In this study developed method is used for a reentry guidance ...  Read More

Investigation and Analysis of Seperation System of Kavoshgar-3

M. A. Farsi; N. Ariaii-Far; R. Kalantari-Nezhad; M. Bahrami

Volume 3, Issue 1 , July 2010, , Pages 15-23

Abstract
  Separation system is one of the main sub-systems in every space device and missile. This system is used to separate active and inactive sections in a missile. The separation process should be done accurately. A separation system explained in this paper was designed and produced based on mission, rocket ...  Read More

Designing and Constructing of Inverted F Antennas on a Space Bound Vehicle for Telemetry Transmission

F. Sadeghikia; S. Amin; K. Raisi; M. Bahrami

Volume 1, Issue 2 , December 2008, , Pages 57-60

Abstract
  This paper provides an instruction for designing and building of an Inverted F antenna mounted on a cylindrical conducting body with a conical nose. Designed antennas were simulated using a full wave simulator HFSS based on the finite element method and their radiation patterns and return loss were studied. ...  Read More