Nima Karimi; محمد علی فارسی
Volume 13, Issue 1 , March 2020, , Pages 13-23
Abstract
In the present paper, the process of designing launch abort system is presented for manned spacecraft in sub-orbital mission. For this purpose, by studying the other manned spacecraft launch abort system, a number of dimensionless parameters have been generated for the launch abort system and spacecraft. ...
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In the present paper, the process of designing launch abort system is presented for manned spacecraft in sub-orbital mission. For this purpose, by studying the other manned spacecraft launch abort system, a number of dimensionless parameters have been generated for the launch abort system and spacecraft. using these parameters, the mass, geometric-dimensional characteristics, the launch escape motor thrust and acceleration of the LAS have been estimated. Also The numerical aerodynamic analysis has been used to form the external configuration, and the results of the analysis, along with other effective parameters, have created a design framework. AHP analysis has been used to select the optimal configuration and in order to validation, an analytical model based on the momentum equation used to design the launch escape motor. Comparison of the results of this model and the statistical design has shown that the data produced is correct.
M. Mirshams; L. Khalaj-Zade
Volume 4, Issue 2 , January 2012, , Pages 11-22
Abstract
To design a manned spacecraft carrying one to two crews to the low Earth orbits, design phases should be completed in various levels. It also needs to gather manned spacecrafts technical data which is developed in the same category. In the system design algorithm presented in this paper, the conceptual ...
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To design a manned spacecraft carrying one to two crews to the low Earth orbits, design phases should be completed in various levels. It also needs to gather manned spacecrafts technical data which is developed in the same category. In the system design algorithm presented in this paper, the conceptual design sequences of a manned spacecraft named Dousti is accomplished systematically.
First of all, in accordance with a target group of manned spacecrafts’ mission, Dousti’s mission profile is defined and system level requirements are recognized. User’s requirements are also considered in the mission profile and subsequently in system level requirements.
General characteristics of Dousti spacecraft as well as its mass and dimensional features are derived in the next step. Statistics and parametric models are systematically applied in design sequence. Then, final characteristics of the spacecraft’s main subsystems designed through engineering methods and applying parametric models are introduced.
Afterwards, resulting characteristics of the spacecraft are traded off to reform and then validated by statistics and parametric models to present the final plan.
M. Mirshams; L. Khaladjzadeh
Volume 3, Issue 1 , July 2010, , Pages 25-36
Abstract
Designing a manned spacecraft carrying one or two persons to low Earth orbits needs to recognize system level requirements and acquire technical data developed in this eria. Revising manned spacecrafts’ characteristics leads to recognize system level requirements and achieve applicable results ...
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Designing a manned spacecraft carrying one or two persons to low Earth orbits needs to recognize system level requirements and acquire technical data developed in this eria. Revising manned spacecrafts’ characteristics leads to recognize system level requirements and achieve applicable results which are needed to design and development of such a spacecraft. Manned spacecraft characteristics comparing charts and figures show a roughly analogous pattern in terms of mass and dimensions and confirm the parallel subsystems have similar performance.