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Decision Matrix for Time-Critical Optimal Trajectories for Air-Launch of Small Satellites

Farzam Nik, Ehsan | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46296 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Malaek, Mohammad Bagher
  7. Abstract:
  8. One of the satellite time-critical launch methods is air-launch, which is considered in this research thoroughly. The Large number of important parameters of this method makes the system highly complex. In such complex systems, usual methods of design and development will not be effective. Moreover, based on systemic approaches, interfaces between different elements of a complex system have significant effects on the performance of the whole system. One of the methods for analysis of such systems is “Design Structure Matrix” or DSM. This method is based on system engineering principles and has confirmed capabilities in analysis of highly coupled systems.
    In this research, the air launch system has been analyzed by employing DSM method and the interaction between its elements has been identified and managed respectively. In the first step, elements and processes of the system has been identified by using different methods of the system breakdown structure. Next, DSM has been built and decision space for designer of the system has been formed based on the information gathered in the previous step. This decision space presents optimal trajectory categories in every launch scenario and different system configurations. Ultimately, solutions for reducing the system complexity are presented and it is shown that employing this method will reduce the complexity of a case study by 37.5 percent. Validation of these solutions has been demonstrated by numerical analysis and comparing with current system’s specifications
  9. Keywords:
  10. Design Structure Matrix ; Optimal Trajectory ; Satellite Aerial Launch ; Time-Critical Launch ; Cluster Control Parameters

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