posted on Mar, 1 2015 @ 01:14 PM
a reply to: Jukiodone
He was mentioning ultrasound to describe how it lowers drag. He then said and now they do it with light. I believe he was referring to systems like
what MBKennel and I have links to above.
The infrasound he mentioned as a defensive system. But went the direction of infrasound makes people cower in fear and not approach the craft. I
believe he was alluding to something else regarding an interesting trick you can do with infrasound. Which I suppose is technically defensive, but
As for the thread title. Any thoughts as to the links the OP posted. ultrasound to reduce drag similar to how plasma can.
Or how bout the link I posted? Using pulsed lasers and microwaves to create plasma clouds at specific places around the craft to move around the
pressure waves the air creates. In the Princeton link it talks about creating a small plasma bloom directly in front of the aircraft's nose. The
plasma doesn't come in contact with the aircraft but deflects the bow shockwave around the aircraft to reduce drag. It says that to maintain an
aircraft at hypersonic speeds with the effect vs without it a 40% reduction in out put required. So if you had to turn your engine to 100% output to
get it to maintain mach 5 or so with out the effect, the engine with the effect could maintain the same speed and be idled down to 60% thrust or
power output. That saves gas, increases range, loiter time, and speed potentially. One makes you wonder if you can maintain mach 6 with the effect
and only be at 60 % thrust output what can it really get up to when it wants to dash. (granted it can take the heat and for how long)
It then goes on to say a second laser/microwave beam rig can be used to create a plasma bloom right in front of the engine inlet. Creating an
"virtual" extended engine cowling that can force even more air into the inlet than normal. You can steer this plasma bloom to be at the distance
you desire infront of the inlet and manipulate the degree of extra air that is being forced into the engine. A virtual supercharger. for the
engine. Wonder if you can even force a scramjet or ramjet like condition with the virtual inlet cowling.
Ad some of this:
(Add plasma actuators in a ring around the exhaust nozzle of the jet that pulse at frequencies in relation to the engine's gasses turbulance and it
smooths it right out, greatly reducing noise. Bet people who live by an airport would love this tech to go civilian. )
and you have heavily reduced the exhaust noise of the aircraft's engines. no more rumbling from somewhere over head tipping you off that a bird is
in the area.