Nosepiece for suppressing a water-entry cavity
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsNathan B Speirs, Aren M Hellum, Jesse L Belden
Life of this patent
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Abstract
A nosepiece is provided with a recess or cup shape with internal dimensions that provides cavity suppression of a body entering an air and water interface. The nosepiece includes a circular portion with a diameter connectable to a nose of the body. The circular portion has a cylindrical first section and a cylindrical second section with the recess as the formed cup in the first section at a depth where the diameter and depth are selected based on a Weber number for the body such that a cavity is suppressed as the nosepiece and the body enter the air and water interface.
Claims5
A nosepiece for suppressing a cavity formed by a body with a nose entering a fluid medium, said nosepiece comprising:
- a circular portion with a diameter “D” connected to the nose of the body, said circular portion having a cylindrical first section and a cylindrical second section with a combined length of said first cylindrical portion and said second cylindrical portion being “L”;
- and
- a recess as a formed cup in said first section at a depth h;
- and
- wherein the dimensions for diameter “D” and depth “h” are selected based on a Weber number for the body such that a cavity is suppressed as said nosepiece and the body enter the fluid medium.
Dependencies are inferred from the claim text.