Satellite Conceptual Design Multi-Objective Optimization Using Co Framework

A. Jafarsalehi; M. Mirshams; R. Emami

Volume 7, Issue 1 , April 2014, Pages 1-12

Abstract
  This paper focuses upon the development of an efficient method for conceptual design optimization of a satellite. There are many option for a satellite subsystems that could be choice, as acceptable solution to implement of a space system mission. Every option should be assessment based on the different ...  Read More

Effects of Some Parameters on Thermal Control of a LEO Satellite

F. Farhani; A. Anvari

Volume 7, Issue 1 , April 2014, Pages 13-24

Abstract
  Satellite thermal control ensures safe operating temperature ranges for satellite components throughout the mission life. Effects of altitude, spin, and position of satellite radiator(s) on the thermal control of a small Low Earth Orbit (LEO) satellite have been studied. Results show that change in satellite ...  Read More

Reliability Determination of a Sounding Rocket Separation System Using its Reliability Block Diagram and FMEA

M. A. Farsi; A. A. Eslami; R. Gorgin

Volume 7, Issue 1 , April 2014, Pages 25-31

Abstract
  Separation system is one of the most important systems in rockets. The influence of this system on mission success cannot be ignored. In this paper, reliability of a sounding rocket separation system is determined using block diagram and FMEA . This system is based on the flexible linear shape charge ...  Read More

Laminar and Turbulent Aero Heating Predictions over Blunt Body in Hypersonic Flow

S. A. Hosseini; S. Noori

Volume 7, Issue 1 , April 2014, Pages 33-40

Abstract
  In the present work, an engineering method is developed to predict laminar and turbulent heating-rate solutions for blunt reentry spacecraft at hypersonic conditions. The calculation of aerodynamic heating around blunt bodies requires alternative solution of inviscid flow field around the hypersonic ...  Read More

Approximate Viscous Shock-Layer Analysis of Axisymmetric Bodies in Perfect Gas Hypersonic Flow

S. Ghasemloo; S. Noori

Volume 7, Issue 1 , April 2014, Pages 41-48

Abstract
  In this paper, an approximate axisymmetric method is developed which can reliably calculate fully viscous hypersonic flow over blunt-nosed bodies. In this method, a Maslen’s second-order pressure expression is used instead of the normal momentum equation. The combination of Maslen’s second-order ...  Read More

Fuzzy Sliding Mode for Spacecraft Formation Control in Eccentric Orbits

A. Imani; M. Bahrami

Volume 7, Issue 1 , April 2014, Pages 49-56

Abstract
  The problem of relative motion control for spacecraft formation flying in eccentric orbits is considered in this paper. Due to the presence of nonlinear dynamics and external disturbances, a robust fuzzy sliding mode controller is developed. The slopes of sliding surfaces of the conventional sliding ...  Read More

FPGA Implementation of JPEG and JPEG2000-Based Dynamic Partial Reconfiguration on SOC for Remote Sensing Satellite On-Board Processing

A. Chekini; H. R. Naji

Volume 7, Issue 1 , April 2014, Pages 57-66

Abstract
  This paper presents the design procedure and implementation results of a proposed hardware which performs different satellite Image compressions using FPGA Xilinx board. First, the method is described and then VHDL code is written and synthesized by ISE software of Xilinx Company. The results show that ...  Read More