Loading...

Utility of Cooperative Parafoils for Recovery of Multi-Segmented Launch Systems

Namdari, Hassan | 2016

575 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48449 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Fathi Jegarkandi, Mohsen
  7. Abstract:
  8. Today, a lot of efforts have been done in order to commercialize space travels. Spacecrafts have a lot of components and producing each of them spends high costs. Components such as propellant tanks and boosters are multi segment and are released simultaneously and therefore it is economically feasible to recover them. Due to Parafoil ability in low-cost, soft (no damage to the cargo) and accurate landing, it is gradually replacing parachute. Parafoil can fly long distances after being released, so its landing point could be determined. The aim of the study is to evaluate this scenario in which some segments of launch vehicle (e.g. booster) that are equipped with Parafoil expand their Parafoil after separating from the launch vehicle, and then together they form a group and begin a flight in order to get to the marked landing point. The dynamic of Parafoil should be involved in simulating the behavior of this group. The guidance law uses three terms; attraction and repulsion among the group segments and attraction towards the target. The coefficients of terms are determined by using the fuzzy logic. The designed controller is a LQR type which could apply the guidance law on 8DOF dynamic of Parafoil
  9. Keywords:
  10. Fuzzy Logic ; Guidance ; Launch Vehicle ; Optimal Control ; Flocking ; Parafoil-Payload System ; Multi-Segment Modeling ; Linear Quadratic Requlator (LQR) ; Eight Freedam Degree Modeling

 Digital Object List

 Bookmark

No TOC