Jan 6, 2026

US12516918 - Nosepiece for suppressing a water-entry cavity

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.

Inventors: Nathan B Speirs, Aren M Hellum, Jesse L Belden
Filing date: 2023-09-19

The patent describes a nosepiece designed to suppress the formation of a cavity when a body with a nose enters a fluid medium, such as water. The nosepiece features specific dimensions based on the Weber number to optimize its performance in minimizing cavitation at the air-water interface.

Claim 1

1 . 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. 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.

Google Patents

https://patents.google.com/patent/US12516918

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12516918