http://contest.techbriefs.com/2016/entries/aerospace-and-defense/6513-0505-022058-magnetic-flying-machine
I have posted this design in NASA techbriefs contest. Anybody liking it can vote for it.
I just want to know whether that design is practically feasible.
Quote from: vineet_kiran on May 14, 2016, 09:47:35 PM
http://contest.techbriefs.com/2016/entries/aerospace-and-defense/6513-0505-022058-magnetic-flying-machine
I have posted this design in NASA techbriefs contest. Anybody liking it can vote for it.
I just want to know whether that design is practically feasible.
You do realize that the magnets will do nothing but add extra weight to the craft--dont you?.
If you want a magnetic flying device,then you would use large field coils(probably 4),and use those field coils the same way a hovercraft uses air to float above water or land. The field coils would need a large field area,but would not have to be that powerful--PSI--many square inches,less pounds per square inch lift needed. These field coils then use the earths magnetic field to work against,much the same as the hovercraft uses air.
Brad
Quote from: tinman on May 15, 2016, 03:26:25 AM
You do realize that the magnets will do nothing but add extra weight to the craft--dont you?.
If you want a magnetic flying device,then you would use large field coils(probably 4),and use those field coils the same way a hovercraft uses air to float above water or land. The field coils would need a large field area,but would not have to be that powerful--PSI--many square inches,less pounds per square inch lift needed. These field coils then use the earths magnetic field to work against,much the same as the hovercraft uses air.
Magnets are used in that design just to transfer the energy of air jets to the top plate to create a vertical lift. The air jets should
be powerful enough to take the weight of entire system including magnets creating a substantial lift upwards.
A howercraft can create a lift or air cushion of less than one inch by high pressure air trying to escape between ground and bottom of the
craft. If you keep hovercraft at higher elevation, the air coming out of the craft cannot create any lift at all unless you provide a rocket
engine creating rocket propulsion.
Earth's magnetic field is very weak hence it cannot create any lift of the other repelling magnet. If you use a very strong repelling magnet,
it may cause reversal of earth's magnetic field in that local area, resulting in attraction.
Quote from: vineet_kiran on May 15, 2016, 05:01:51 AM
craft. If you keep hovercraft at higher elevation, the air coming out of the craft cannot create any lift at all unless you provide a rocket
engine creating rocket propulsion.
QuoteMagnets are used in that design just to transfer the energy of air jets to the top plate to create a vertical lift. The air jets should
be powerful enough to take the weight of entire system including magnets creating a substantial lift upwards.
Why would you use all that extra weight,when you could just use directional nozzles to direct the air flow where ever you wanted.
QuoteA hovercraft can create a lift or air cushion of less than one inch by high pressure air trying to escape between ground and bottom of the
The air pressure is actually quite low,due to the surface ares of the vehicle being lifted.
Example-with a small area of just 18.3 square feet,we only need 10 PSI to lift 1 ton. That is an area of just around 4.2 feet x 4.2 feet--not very large at all.
QuoteEarth's magnetic field is very weak hence it cannot create any lift of the other repelling magnet. If you use a very strong repelling magnet,
it may cause reversal of earth's magnetic field in that local area, resulting in attraction.
I think you would be surprised at just how strong the earths magnetic is per square foot.
Brad
Quote from: tinman on May 15, 2016, 05:17:36 AM
Why would you use all that extra weight,when you could just use directional nozzles to direct the air flow where ever you wanted.
That is for controlling the lift. Can you make a rocket to stand at desired height like a helicopter?
Build one.
You need four magnets, two hinges, some wood, plastic tubing and a hoover which blows as well as sucks.
I think you will find that every action has an equal and opposite reaction.
@Paul.R
I am not in a position to build it now.
Can you please explain why it will not create a lift?
Why Mickey Mouse around. Just buy or make one of these THAT WORKS!
Then Scale it UP if you want to.
https://www.youtube.com/watch?v=soxxPyaAT1k (https://www.youtube.com/watch?v=soxxPyaAT1k)
.
Quote from: FatBird on May 15, 2016, 07:35:24 PM
Why Mickey Mouse around. Just buy or make one of these THAT WORKS!
Then Scale it UP if you want to.
https://www.youtube.com/watch?v=soxxPyaAT1k (https://www.youtube.com/watch?v=soxxPyaAT1k)
.
This one is more easy to build
https://www.youtube.com/watch?v=3RNkKRJJHqw
Quote from: vineet_kiran on May 15, 2016, 07:29:13 PM
@Paul.R
I am not in a position to build it now.
Can you please explain why it will not create a lift?
It may well create lift but for every lb.force of lift you will get the same pointing downwards. (It may be a bit like trying to lift a car by sitting in the driver's seat and pushing up on he roof).
Quote from: vineet_kiran on May 15, 2016, 05:01:51 AM
Magnets are used in that design just to transfer the energy of air jets to the top plate to create a vertical lift. The air jets should
be powerful enough to take the weight of entire system including magnets creating a substantial lift upwards.
A howercraft can create a lift or air cushion of less than one inch by high pressure air trying to escape between ground and bottom of the
craft. If you keep hovercraft at higher elevation, the air coming out of the craft cannot create any lift at all unless you provide a rocket
engine creating rocket propulsion.
Earth's magnetic field is very weak hence it cannot create any lift of the other repelling magnet. If you use a very strong repelling magnet,
it may cause reversal of earth's magnetic field in that local area, resulting in attraction.
Well, I have seen small hovercraft, actually known as ground effect vehicles, hover over 2 ft off the ground using a small lawnmower engine. That little gap you are talking about is the air gap and is usually a few inches but it is not how high the craft is actually hovering off of the ground. That is simply the distance from the bottom of the skirt to the ground.
Bill