Directorly Downwind Faster than the Wind

[Ted Ewert]

I must say this is a captivating idea. After reading through this thread there are a couple of thoughts I would like to add.
First of all there is gain somewhere in the system that needs to be pinned down. It needs to be analyzed and defined so it can be optimized.
The most likely candidate I see for gain is the prop. I think there are a couple of forces working on the prop to give it thrust.
The first and most obvious is the ability of the prop to move air and produce thrust. Nothing too mysterious there. The other force working on the prop is pressure.
The prop traveling through the air produces a low pressure on the forward side of the prop surface and a high pressure on the rear surface. This differential in pressure produces thrust in the direction of high pressure towards the low pressure.
On the prop this thrust can manifest in both in the axial and the radial directions. Depending on the shape of the prop, this thrust can propel the vehicle forward or be transferred to the wheels through radial thrust.
One aspect of this vehicle that stands out for me is that it has to get up to a certain speed to become self motivating. This means that somewhere along the line a linear increase in velocity is producing a non linear increase in thrust. Once again this points back to the prop.
My best guess is that the prop is acting like an airfoil. This would increase the radial thrust of the prop as airspeed across the surfaces of the prop increased. This thrust would then be directly transferred to the wheels. This could account for the extra energy. An airplane wing develops lift as a result of a pressure imbalance produced by the difference in air velocity between the top and bottom halves of the wing. While the actual cause of this pressure differential is still argued to this day, my opinion is that it is caused by the Bernoulli effect.
This same principal is what allows the ice boats to go so fast up wind. This thrust is caused by the velocity differential of two streams of air moving over a particularly shaped solid surface. In other words, the iceboat sails have a lot of “lift”. A prop has lift too.
My hunch is that this prop lift is what needs to be optimized.

Cheers,

Ted

[TechStuf]

An airplane wing develops lift as a result of a pressure imbalance produced by the difference in air velocity between the top and bottom halves of the wing. While the actual cause of this pressure differential is still argued to this day, my opinion is that it is caused by the Bernoulli effect.

This is a very common misconception regarding aerodynamics.  The great majority of lift is always provided by reaction lift.

Judging by the prop speed of the Black Bird vehicle and the portion of the prop which allows for such, the relatively miniscule gains provided by the 'Bernoulli effect' are wholly insufficient to account for the effects we are witnessing.

What we are witnessing covers much more territory than aerodynamics alone and is allegorical to effects which, once fully understood, will be revealed to have long been applicable to both the largest and the smallest of possible scales.


TS

[sparks]

  How can an airplane go a thousand miles an hour without using any fuel at all. 

  Answers A.  You are nuts it is totally impossible.
              B.  Draw on zero point energy whatever that is
              C.  Fill the air craft with lighter than air gas and float into space.  Let the earth pass underneath you
                   at a thousand miles an hour then compress the gas so you fall to Earth a thousand miles away from where
                    you ascended.  Slow your descent with turbines that charge batteries so that when you reach the deck
                     you dont kill yourself and you have enough juice on board to drive the compressors that triggered the
                    descent.

[Ted Ewert]

This is a very common misconception regarding aerodynamics.  The great majority of lift is always provided by reaction lift.

Judging by the prop speed of the Black Bird vehicle and the portion of the prop which allows for such, the relatively miniscule gains provided by the 'Bernoulli effect' are wholly insufficient to account for the effects we are witnessing.

What we are witnessing covers much more territory than aerodynamics alone and is allegorical to effects which, once fully understood, will be revealed to have long been applicable to both the largest and the smallest of possible scales.


TS

You dispute my theory, which is fine, yet you offer nothing better. What force do you believe accounts for the extra energy?

[sparks]

  What I would like to know is if the wind is not blowing at all.  Does the vehicle move.  Can you take the vehicle in a dead calm accelerate it to whatever speed and then just have it take off.  If this is possible then this is unique.  Otherwise  what difference is there between this machine and an airplane traveling from the west coast to the east coast.  Airplane companies always carry less fuel per passenger traveling east to west.  The assholes almost got me killed because of this,  They fueled the plane to save money burning fuel to move fuel on a trip from the West coast to Chicago.  Chicago (the stupidest place in the world to have an international airport due to the proximity to the great lakes)  is socked in.  The ceiling at ground level.   Just enough fuel on board to get to Chicago not to spend an hour in the air waiting for fog to lift.  The landing became an emergency issue.  When we came out of the fog I could tell if guys walking on the street down below were bald and who wasnt.  The pilot knows he is short of the runway and way too low so he guns it.  By now everybody is in the kiss your ass goodbye position.  Even the stewards are frightened.  We hit the runway going way too fast.  The pilot full reverse thrust to the engine uses every inch of the runway to stop the plane.  We are greeted by a special ground crew assembled to put out fires and extract people from wrecks.  The plane is so deep in the runway it cant even turn itself around and we have to wait for a tractor to come out and pull us back down to the taxiway.   My wife has dug her nails so deep in  my arm I'm bleeding and all the captain has to say is the regular bs about welcome to chicago the temperature outside etc.  Cheap assholes.  Just another example of money before life.