For a few years I have been exploring the use of helicopters for warning public of approaching bushfires in remote areas by using airborne public address.
To be truly effective the warning needs to penetrate a building and ambient noise into a house, lets say with kids wearing headphones on their xbox.
Newer airborne public address kit is pretty good.
Im familiar with the latest airborne speaker technology and directional kit designed for riot and warfare
However I'm also wondering if there is a way of generating noise in other ways.
In theory we have main rotor, tail rotor, jet exhaust, compressor air bleed and aircraft 28 volt electrics to play with.
Ive excluded the use of carry on equipment.
Also effective could be a rumble or vibration… dropping flash bangs is a non runner due to threat of fire
mickjoebill