Thin 'Bubble' Coatings Could Hide Submarines from Sonar

Ratings
0 6 0
Joined
Jan 11, 2015
Messages
72
Country
Romania
Location
Romania
#1
Bubble-filled rubbery coatings may one day help make submarines virtually undetectable to sonar, researchers say.

To avoid detection by sonar,military submarines are often covered with sound-absorbing tiles called anechoic coatings. These perforated rubber tiles are typically about 1 inch (2.5 centimeters) thick.

In the past decade, research has suggested that the same degree of stealth could be provided by much thinner coatings filled with vacant cavities. When hit by sound waves, empty spaces in an elastic material can oscillate in size, "so it will dissipate a lot of energy," said lead study author Valentin Leroy, a physicist at the Université Paris Diderot in France.

Source: Thin 'Bubble' Coatings Could Hide Submarines from Sonar