Transactions of FAMENA, Vol. 40 No. 4, 2016.
Original scientific paper
https://doi.org/10.21278/TOF.40406
Minimum Thrust of a Morphing Unmanned Submersible Aerial Vehicle in the Water-to-Air Motion
Feng Jinfu
; Engineering College of Aeronautics and Astronautics, Air Force Engineering University, Xi’an, ChinaFlying instructor training base, Air Force Aviation University, Bengbu, China
Li Yongli
; Engineering College of Aeronautics and Astronautics, Air Force Engineering University, Xi’an, ChinaFlying instructor training base, Air Force Aviation University, Bengbu, China
Xu Baowei
; Engineering College of Aeronautics and Astronautics, Air Force Engineering University, Xi’an, ChinaFlying instructor training base, Air Force Aviation University, Bengbu, China
Liu An
; Engineering College of Aeronautics and Astronautics, Air Force Engineering University, Xi’an, ChinaFlying instructor training base, Air Force Aviation University, Bengbu, China
Qi Duo
; Engineering College of Aeronautics and Astronautics, Air Force Engineering University, Xi’an, ChinaFlying instructor training base, Air Force Aviation University, Bengbu, China
Abstract
This study proposes a new water-to-air motion pattern that combines morphing with power switch. Under the conditions of this pattern, the vehicle needs a certain thrust to avoid falling back after jumping out of the water. The minimum thrust is among the most important design parameters of a vehicle. The water-exit and take-off dynamic models of the vehicle are constructed through the force and motion analysis before and after morphing. The control model of the vehicle is created by analysing the control problem in the take-off motion. The minimum thrust at different initial water-exit angles is computed using the optimum searching algorithm. The following law is then established: the greater the initial water-exit angle, the smaller the minimum thrust required in the air. Such a relationship becomes insignificant when the initial water-exit angle exceeds 40°.
Keywords
Morphing Unmanned Submersible Aerial Vehicle (MUSAV); water-to-air motion; minimum thrust; optimization algorithm
Hrčak ID:
174728
URI
Publication date:
21.2.2017.
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