[NewCandle] [Bulk] Re: EMDrive

[Keith Nagel]

Well I suppose we can content ourselves at the moment with the patent,
GB2399601 Here at Espacenet
http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB2399601&F=0

It's pretty thin on details, but basically in fig 1 you have a tapered
microwave cavity. If I understand the website and associated
material he is saying that the group wave velocity at the large
end is slow, and small at the fast end. The rate of change
of group wavespeed down the cavity he's associating with the
directional force? ( arrow 6 in fig 1 ). 

K.

-----Original Message-----
From: newcandle-bounces at ipdiscover.com
[mailto:newcandle-bounces at ipdiscover.com]On Behalf Of Colin Quinney
Sent: Sunday, September 10, 2006 12:58 AM
To: New energy for the new world.
Subject: Re: [NewCandle] [Bulk] Re: EMDrive


Hi Keith,

I missed your NewCandle Email. I haven't yet figured out how to direct and 
they have been going to my bulk basket, so I'm a couple of days behind.

Short answer- no, but I should have requested the papers and now I'm kicking 
myself. I didn't expect to see the emdrive as main theme on New Scientist, 
nor specifically this week -one day after I brought up the subject. That was 
quite a coincidence. (although Nick might disagree with that assessment :)

I have however posted to Vo the address to request the experimental and 
theory papers. TheEmdrive at aol.com

Colin


----- Original Message ----- 
From: "Keith Nagel" <NewCandleAdmin at ipdiscover.com>
To: "New energy for the new world." <newcandle at ipdiscover.com>
Sent: Thursday, September 07, 2006 6:58 PM
Subject: [Bulk] Re: [NewCandle] EMDrive


> Well, come to think of it, we can't rule out thermal
> effects. With ~1KW in a closed waveguide, hot air could
> be venting from a gasket or seam which would look
> like a directional thrust. I don't entirely buy his
> explaination of a multisecond time constant, again it's
> looking more like thermal effect. OTOH I haven't seen
> the actual details, just the site info, so perhaps he's
> addressed these thing adequately. Did you sign up for
> his paper, Colin?
>
> K.
>
> -----Original Message-----
> From: newcandle-bounces at ipdiscover.com
> [mailto:newcandle-bounces at ipdiscover.com]On Behalf Of Keith Nagel
> Sent: Thursday, September 07, 2006 4:47 PM
> To: New energy for the new world.
> Subject: [NewCandle] EMDrive
>
>
> Hi All,
>
> Colin Q. posted notice of an electromagnetic propulsionless drive,
> more info about which can be found here.
>
> http://www.shelleys.demon.co.uk/fdec02em.htm
> http://www.emdrive.com/
>
> Here's a link to Shawyers patent, GB2399601
> http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB2399601&F=0
>
> Remarkably, it's only been patented in the UK. Given the
> value of the device if it proves functional, I'm left
> a bit slack jawed about that... You would think he would
> have ignored GB and gone straight to WIPO.
>
> Anyway, it's promising that the device exhibits positve and
> negative thrust depending on direction, so we can
> rule out thermal effects. And simple radiation pressure ought
> to be orders of magnitude lower than what he measures.
> How about that?
>
> K.
>
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