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Thursday, February 05, 2015

Thin 'Bubble' Coatings Could Hide Submarines from Sonar

USS Hampton (SSN-767)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.

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1 comment:

  1. Anonymous5/2/15 21:04

    It seems like this approach would only lead to higher risk of passive noise generation on depth changes and higher scattering at unmatched frequencies. I.e. the simple counter would be a shift in frequency or broadband pulse for the active sonar, something that might even be achieved without any hardware upgrades on modern systems.

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