Study on the manoeuvring characteristics of axisymmetric underwater vehicles with different slenderness and control fin aspect ratios
| Autor: | Praveen Perumpulissery Chandran, Manu Korulla, Krishnankutty Parameswaran |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Normal force Fin business.industry Rotational symmetry Oblique case Equations of motion 020101 civil engineering Ocean Engineering 02 engineering and technology Structural engineering Horizontal plane 01 natural sciences 010305 fluids & plasmas 0201 civil engineering Buckling 0103 physical sciences Underwater business Mathematics |
| Zdroj: | Ocean Engineering. 201:107034 |
| ISSN: | 0029-8018 |
| DOI: | 10.1016/j.oceaneng.2020.107034 |
| Popis: | This paper presents the effect on the manoeuvring characteristics of an axisymmetric underwater vehicle due to its body slenderness ratio and aft fins. The vehicle is a slender body of revolution with elliptical nose, tapered tail and cylindrical middle body. Five vehicle lengths with slenderness ratio from 10.8 to 14.4 with two sets of aft cruciform fins with different aspect ratios are employed for this study. The effect of manoeuvrability is evaluated by simulation of standard manoeuvres using 6 degrees-of-freedom (6DOF) equations of motion. The variation of normal force and pitch moment at oblique flows/pitch rates due to slenderness ratio and aft fin are evaluated by experimental and numerical methods. It is seen that the straight line stability in horizontal plane improves with slenderness ratio and aft fins size. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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