Problems you are going to have, if for no other reason than that acoustic energy in that sort of quantity is very destructive, and difficult to direct effectively. Big outdoor PA systems are producing a few tens of acoustic watts - convert this to horsepower, and try to imagine how loud a manned vehicle would have to be. Such a craft would, however, be quite an effective weapon, pulping flesh or airquaking down buildings depending on frequency.
I've never heard of sonic augmentation being used on anything larger than a bumble bee, but that doesn't necessarily mean it couldn't work, preferably at very low altitudes, where the energy can reflect back off the ground...
Um, IIRC, some-one spotted how to build a pump-less heat-pump by using standing waves in a convoluted, but sealed container.
Didn't Douglas Adams have that idea with the Plutonium Rock band Disaster Zone?Such a craft would, however, be quite an effective weapon, pulping flesh or airquaking down buildings depending on frequency.
generally held to be not only the loudest rock band in the Galaxy, but in fact the loudest noise of any kind at all. Regular concert goers judge that the best sound balance is usually to be heard from within large concrete bunkers some thirty-seven miles from the stage, while the musicians themselves play their instruments by remote control from within a heavily insulated spaceship which stays in orbit around the planet – or more frequently around a completely different planet. Their songs are on the whole very simple and mostly follow the familiar theme of boy-being meets girl-being beneath a silvery moon, which then explodes for no adequately explored reason. Many worlds have now banned their act altogether, sometimes for artistic reasons, but most commonly because the band’s public address system contravenes local strategic arms limitations treaties.