Abstract
Due to the complexity of the cavity/vehicle and oscillation characteristics, streamlined shape integrated design of conventional fully wetted vehicles is not suitable for supercavitating vehicles. In this paper, a set of design criteria is highlighted to optimize the length and streamlined shape of a conical section subjected to realistic design constraints, which integrate the complex characteristics of the cavity/vehicle system under the condition of auto-oscillation of supercavitating vehicles. The auto-oscillation and its time-domain characteristics are determined. By deriving the equation describing the cavity/vehicle relationship and identifying the maximum amplitude of the Euler angle, the cavity/vehicle tangent point criterion is proposed to determine the theoretical optimum value of the length of the conical section. A method of equal cross-sectional area for gas flow is proposed to design the streamlined shape of the conical section. Water tunnel and autonomous flight experiments were carried out to validate the feasibility of the design methodology developed in this work.
Highlights
Supercavitation is a phenomenon in which a cavity is formed around an underwater vehicle
Focusing on the conical section of Supercavitating vehicles (SVs), a set of design criteria is presented in this paper to assess the length and streamlined shape of a conical section subjected to realistic design constraints, which integrate the complex characteristics of the cavity/vehicle system under the condition of auto-oscillation of the vehicle
A set of design criteria is presented to assess the length and streamlined shape of a conical section subjected to realistic design constraints, which integrate the complex characteristics of the cavity/vehicle system under the condition of auto-oscillation of supercavitating vehicles
Summary
Supercavitation is a phenomenon in which a cavity is formed around an underwater vehicle. Limited investigations have been performed on configuration of SVs. In addition, most studies mainly discussed structural behavior, drag characteristics, and cavitator assembly, not mentioning the streamlined shape design principle. Focusing on the conical section of SVs, a set of design criteria is presented in this paper to assess the length and streamlined shape of a conical section subjected to realistic design constraints, which integrate the complex characteristics of the cavity/vehicle system under the condition of auto-oscillation of the vehicle. Using the presented design criteria, the optimal length and streamlined shape of a conical section can be sought to maximize the range of stable operation of SVs. e results of water tunnel and autonomous flight experiments verify the feasibility of the proposed design methodology.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
