Emdrive - Propellantless thruster

[Pixie]

- for that star wars hoverbike or George Jetson flying car you always wanted to build.
http://www.shelleys.demon.co.uk/fdec02em.htm

http://www.newscientist.com/data/images/ns/av/shawyertheory.pdf

http://emdrive.com/

"On the ground, it may be possible to make the engine much more powerful, even powerful enough to lift a flying machine against the force of gravity. We have been asked not to say how this might be done, but we can reveal that it involves a drastic improvement in the 'Q' factor, possible by a means which is available using present day technology, but one which would require a fair amount of expenditure to develop. Shawyer insists that such an engine would not be an anti gravity machine, which it may or may not be possible to construct, but would certainly behave like one."

[Skyryder]

- for that star wars hoverbike or George Jetson flying car you always wanted to build.
http://www.shelleys.demon.co.uk/fdec02em.htm

http://www.newscientist.com/data/images/ns/av/shawyertheory.pdf

http://emdrive.com/

"On the ground, it may be possible to make the engine much more powerful, even powerful enough to lift a flying machine against the force of gravity. We have been asked not to say how this might be done, but we can reveal that it involves a drastic improvement in the 'Q' factor, possible by a means which is available using present day technology, but one which would require a fair amount of expenditure to develop. Shawyer insists that such an engine would not be an anti gravity machine, which it may or may not be possible to construct, but would certainly behave like one."


Fine if you can understand all this. http://en.wikipedia.org/wiki/EmDrive

I got the feeling that this is another cold fusion illusion.

Skyryder

[Pixie]

Read the articles before you pull such a comment out of your arse.

The UK Dept of Trade & Industry has funded Shawyer to the tune of 250,000 pounds

Engineers in Germany,working on particle accelerators have achieved resonant cavities with a Q of several billion.If Shawyer can match this performance in his microwave engine it is calculated to achieve a thrust of 30,000 newtons per kilowatt - enough to lift a large car.

[Ixion]

Is there a two stroke version?

And why do I have a feeling this is going to lead into Mr Motu's sucky hover things.

[Pixie]

It has no ports at all,so I suppose it is a 'no stroke'.
I am not aware of Mr Motu's 'sucky hover things' and I'm not sure I wish to be made so.

[Ixion]

A no stroke! Well, that's even better than the immortal Spragthorpe one stroke. don't let Mr Fish know, he will be disconsolate. Perhaps this may become the successor to the lamented Spragthorpe and Zorch, continuing the pioneering innovation of those famous marques.

The wonders of modern technology , what will they think of next.

[R6_kid]

i sort of understand... but thats only from reading the wikipedia article, i'll read the rest when my eyes arent so sore - the formatting doesnt make it any easier!

[Colapop]

Suppose this propulsion drive can get a vehicle (in space) up to the speed of light or thereabouts, what would be the effect on the human body? Would there be no effect because the mass inside the vehicle would be travelling at the same speed? Would there need to be an artificial gravity? And how would you stop forward momentum? Is there a navigation device (radar type??) that is capable of mapping and avoiding objects that may be or become in the path of the vehicle? Getting a vehicle to the speed of light is not as difficult as what some would have you believe, it is the secondary issues that cause the problems...

[Motu]

I am not aware of Mr Motu's 'sucky hover things' and I'm not sure I wish to be made so.

Tough shit man - here it is! When I was a kid this is what I was told we would all be driving.I'm still waiting....and every year a new flying car is invented.

[Jamezo]

Gah. Conservation of momentum is not something that you can just ignore. If this device actually worked, it would be contrary to everything we know about mechanics.

His calculations which 'prove' the mechanism for the action have been demonstrated to be in error, and if they are corrected, show no net force. Who would have guessed....

Thumbs down to the dorks who are funding its 'development', that money would be better spent on a Tapu-lifting ceremony.

[Steam]

Shawyer is laughing all the way to a new Ferrari methinks.

[jonbuoy]

Does it leave everything it hovers over blackened and charred from its high power microwaves?

[sAsLEX]

Tough shit man - here it is! When I was a kid this is what I was told we would all be driving.I'm still waiting....and every year a new flying car is invented.

Whats this then?

<img src=http://www.moller.com/centerimage/main1-skycar.gif>


Moller skycar, looks similar to that pic of yours!

[sAsLEX]

Gah. Conservation of momentum is not something that you can just ignore. If this device actually worked, it would be contrary to everything we know about mechanics.

His calculations which 'prove' the mechanism for the action have been demonstrated to be in error, and if they are corrected, show no net force. Who would have guessed....

Thumbs down to the dorks who are funding its 'development', that money would be better spent on a Tapu-lifting ceremony.

The earth is both flat and the centre of the earth. That was a fact as well.


Conservation of Momentum etc are theories only, we as a race have yet to prove them wrong. Many past theories have been debunked in the past.


There was a company about 6 months ago that claimed they had proven perpetual energy and called for scientists to come and test their device out, but they fell off the radar pretty quick smart!

[Skyryder]

Read the articles before you pull such a comment out of your arse.



The UK Dept of Trade & Industry has funded Shawyer to the tune of 250,000 pounds

Engineers in Germany,working on particle accelerators have achieved resonant cavities with a Q of several billion.If Shawyer can match this performance in his microwave engine it is calculated to achieve a thrust of 30,000 newtons per kilowatt - enough to lift a large car.

I did. The comment quotes some experts in this field who have serious doubts.

Shawyer claims[1] to have constructed a prototype weighing 9 kilogrammes that consumes 700 watts of power and produces 88 millinewtons of force.
The limiting factor for performance is claimed to be the Q factor of the cavity, as microwave energy lost to heating the cavity reduces the field strength within, so Shawyer is experimenting with a cavity lined in a superconducting material that may produce Q factors sufficient to build a device capable of generating 30 newtons per watt.
These results have not been reproduced by other scientists, nor have they been published in a peer-reviewed scientific journal.

In the grand scheme of things in the R an D area 250,000 pounds is not a lot of money. At the moment he has theory and calculations and a proto typ. The industry does not preclude a vehicle driven by this means. And at the same time cold fusion is pracable from calculations also. It's just that when two scientists claimed that they had perfected the process no one else could duplicat it. Great if it works but other engine for deep space travel can also be used. Ion drives look to be the winner at the moment.

Skyryder