Volume 17 (2024)
Volume 16 (2023)
Volume 15 (2022)
Volume 14 (2021)
Volume 13 (2020)
Volume 12 (2019)
Volume 11 (2018)
Volume 10 (2017)
Volume 9 (2016)
Volume 8 (2015)
Volume 7 (2014)
Volume 6 (2013)
Volume 5 (2012)
Volume 4 (2011)
Volume 3 (2010)
Volume 2 (2009)
Volume 1 (2008)
Number of Articles: 8
Development of an Integrated Design Environment for Optimal Ascent Trajectory Planning
Volume 1, Issue 1 , September 2008, Pages 1-10
Abstract
Current practical methods of pitch programming design for multi-stage launch and ballistic vehicles suffer from several deficiencies. For many applications they are often determined for various phases of ascent trajectory utilizing simplified dynamics that results in non-optimal trajectories. Trial-and-error ... Read MoreDesign of Attitude Control System of an Axisymmetric Satellite with Gravity Gradient Stabilization and Slow Spinning about Yaw Axis
Volume 1, Issue 1 , September 2008, Pages 11-19
Abstract
In this paper, attitude control system of an axisymmetric satellite will be designed in such a way that required stability is provided with slow spinning about yaw axis. In this regard, dynamic of motion and coupling between satellite’s axes is modeled. As a result, a closed form formula is yielded ... Read MoreMulti-Stage Liquid Propellant Launch Vehicle Conceptual Design, Based on Combinatorial Optimization of Major Design Parameters
Volume 1, Issue 1 , September 2008, Pages 21-36
Abstract
The principle goal of this paper is developing of Launch Vehicle Conceptual Design (LVCD) method based on combinational optimization of major design parameters. To this end, ten sub-algorithms will be presented in this design approach. Mass distribution of different stages to launch maximum payload mass ... Read MoreSatellite Attitude Control by Magnetic Torquers with Variable Magnetic Intensity for Optimization of Power Consumption
Volume 1, Issue 1 , September 2008, Pages 37-45
Abstract
This Paper presents a dynamic model of a micro-satellite in Mesbah class. At this model aerodynamic torque and solar radiation pressure torques are considered as disturbance torques. Gravity gradient torque is assumed as stabilizing torque and acts as a passive controller. Magnetic torquers act as an ... Read MoreMultidisciplinary Design Optimization of a Small Launch Vehicle; a System Sensitivity Analysis Approach
Volume 1, Issue 1 , September 2008, Pages 47-56
Abstract
Abstract-Multidisciplinary Design Optimization (MDO) approaches have significant effects on aerospace vehicle design methodology. In designing next generation space launch systems, MDO processes will face new and greater challenges. Needs to improve conceptual design capabilities have required an increase ... Read MoreEffects of Solar Activities, Drag Coefficient and Atmospheric Wind on Altitude Loss of a LEO Satellite
Volume 1, Issue 1 , September 2008, Pages 57-66
Abstract
In this paper, the effects of future solar activities, drag coefficient and atmospheric wind on altitude loss and life time of a LEO satellite is investigated. For this purpose, an orbit propagator is used whose results have been verified by STK software. To analyze the satellite position, the effect ... Read MoreEvaluation of the Effects of Radiation, Irradiance, and Temperature on Solar Cell Electrical Characteristics and Extraction of Maximum Solar Panel Power by MPPT
Volume 1, Issue 1 , September 2008, Pages 67-80
Abstract
In this paper, the effects of orbital–environmental parameters on the maximum delivered power of silicon solar cells in various orbits are investigated. The survey consists of the effects of radiation, irradiance, and temperature on solar cell electrical characteristics in LEO and GEO orbits. Applying ... Read MoreConsiderations of Utilizing Telemetry and GPS System in Sounding Rockets
Volume 1, Issue 1 , September 2008, Pages 81-86