Designing and Simulating the Aeronautical Telemetry Radio Link for an Air Vehicle with Fast Maneuver

SH. Marzban; K. Mohamedpour

Volume 2, Issue 1 , April 2009, Pages 1-12

Abstract
  Aeronautical telemetry system is applied to real flight conditions and movements so as to test the efficiency of different parts of an air vehicle such as an airplane, a missile, and a space shuttle during the flight. In order to study, determine and lessen the deleterious effects of the air vehicle's ...  Read More

Designing, Testing and Evaluation of Single Gimbal Control Moment Gyro for Microsatellite

A. R. Aghalari; A. Kalhor; S. M. Dehghan; A. Abedian

Volume 2, Issue 1 , April 2009, Pages 13-23

Abstract
  In this paper, a designing procedure of Single Gimbal Control Moment Gyro (SGCMG) for performing an agile slew maneuver in a microsatellite is described, then a prototype is fabricated and finally the test results are presented. The design of actuator mechanism is based on simplicity, direction of produced ...  Read More

Analysis of Random Positioning System for Simulation of Microgravity

M. Tahaye Abadi; H. Kashani; N. Ariaeifar

Volume 2, Issue 1 , April 2009, Pages 25-34

Abstract
  The paper presents a kinematical model for a random positioning system which simulates microgravity conditions on the ground. The random positioning system contains two frames, with an experiment platform. The frames are rotated around two perpendicular axes by a random angular velocity that it causes ...  Read More

A Reliability Growth Model for a Launch Vehicle With its Requirements

Z. Mehrafroz; S. Radpour

Volume 2, Issue 1 , April 2009, Pages 35-42

Abstract
  In this paper, reliability growth concepts and modeling methods have been studied and a reliability growth model for launch vehicles has been proposed. Numerical example shows how we can obtain the model parameters. A method for calculating the initial launch vehicle reliability is suggested, also a ...  Read More

Flexible Spacecraft Three Axis Attitude Maneuver by Active Vibration Control

M. Sayanjali; J. Roshanian; A. Ghafari

Volume 2, Issue 1 , April 2009, Pages 43-50

Abstract
  In this paper, equation of motion of three axis attitude dynamic of flexible spacecraft is derived using combination of finite element method and Euler equation. Flexible appendafes are modeled by beam elements. Goal of control is target attitude of spacecraft from initial state to desired attitude and ...  Read More

Dual Base Swirl Injector Design for Increasing Specific Impluse in a Liquid-Fuel Rocket Engine

F. Ommi; A. Kargar; S. M. Hosseinalipour

Volume 2, Issue 1 , April 2009, Pages 51-57

Abstract
  Optimized injectors spray and consequently their proper fluid distribution is one of the most important factors determining the thrust force and combustion stability. Reaching a stable combustion with a high specific impulse needs a proper fuel distribution and atomization. Asymmetric distribution of ...  Read More

Dynamic Simulation for Diffusion of Satellite Detached Particles in Various Orbits

E. Shafiee-Nejhad; N. Rahbar; M. Asghari; A. R. Novinzade

Volume 2, Issue 1 , April 2009, Pages 59-65

Abstract
  In this article the simulation of explosion and diffusion of debris consequent on explosion, in the space are studied. This method is simulated by the introduced code and the results are closely checked in accordance with different operational situations for the huge amounts of particles in different ...  Read More

An Algorithm for Increasing Performance of a Space Launch Vehicle Using Solid Rocket Boosters

M. Nosratolahi; V. Blochestani; A. H. Adami-Dehkordi

Volume 2, Issue 1 , April 2009, Pages 67-71

Abstract
  This article generates the algorithm for increasing performance of a space launch vehicle using solid rocket boosters.In all of the world, many space launch vehicles are designed with limited performance capabilities. But when the increased performance capabilities is required, one of the best solution ...  Read More