posted on Jan, 25 2017 @ 06:05 PM
a reply to: mikell
Think of it like a boat's wake.
Quiet-booming aircraft are like building a wakeless boat. It's pretty easy when you're going small, but gets much, much harder as you get bigger,
simply because larger aircraft displace more air as they fly just as a larger boat displaces more water.
That's why the shapes you see for large quiet-booming aircraft concepts are so weird and stiletto like (just like the hulls of the low-wake commuter
ferries on the Thames in London), because it's all about making that volume move through the air while disturbing it as little as possible.
Quiet-booming aircraft also have the difficulty of needing to shape their wakes, er, shockwaves in three dimensions so that as much of the energy
generated by their movement through the air at supersonic speeds is directed away from the ground rather than towards it. Naval architects have it
easy since they only have to think in two dimensions.
edit on 25-1-2017 by Barnalby because: (no reason given)