Why are sonobuoys the size they are ?
Is it because there has never been a need to make them smaller given there has always been plenty of space on the aircraft ? Unattended Ground Senors were originally very large, and are now very small.
Too many people saying it cannot be done when the whole premise of the size of a sonobuoy is incorrect ? A few years ago the suggestion of armed drones was derided by the pilot community, but thats the way the money is going.
Or could a small sonobuoy be developed which could be deployed by other platforms?