Quote:
Originally Posted by freebeard
It's been quiet on the ionic thruster front, but here's this:
Even if it's not enough thrust for a flying wing, surely a Coanda nozzle (similar to Jetoptera's design) grafted onto the aft of an Aptera would be possible. |
That's just him again, looking for clicks/money.
He gets it to turn on a turntable with a counterbalance and all but his 'wanting to build a flying aircraft' with a similar contraption is going nowhere IMHO:
The added drag and those 'thrusters' buggering up the airflow above the wing...
Now had he gone pulsed DC Dielectric Barrier Discharge (DBD) where you would get the same flow over the top of the wing, in the boundary layer no less, withOUT all that added drag and flow disruption it would be a whole lot more interesting.
But as an aid to the aerodynamics of a conventional, propeller or jet powered aircraft wing.
One might even do a bit of MHD on the wing tips to ameliorate tip vortices as the air is ionized anyway.
Also; why stop with the wings if a propeller is just a small wing?
(so too for turbine blades etc)
More On Topic:
If DBD can be used to basically negate skin surface drag = boundary layer, from around the point that flow changes from laminar to turbulent on car bodies using DBD, things might get interesting!
In the newer post on the topic research points to a net win where the power required to power DBD is lower than the power lost to drag without it.
ie: For less power than is lost to drag; it looks like air can be persuaded to stay attached to surfaces. Even the ...er... trailing edges of vehicles, resulting in a smaller wake.
It's EASY to test/try: (Where the 'shouting starts?)
All one needs is one or more of
these $12 power supplies, a roll of Kapton Tape, some strips of Aluminium Foil, some 1 mega ohm resistors and a stick of Pritt.
Oh; and a look at
b here;
and a look at the paper here:
https://www.nature.com/articles/s41598-019-42284-w
(The linked PSU is not an ideal, efficient self-tuning resonant circuit, but for tuft testing etc, it's fine)