[AR] Re: [UK OFFICIAL] Re: NASA test of quantum vacuum plasma thruster (was "Anyone heard of this?")
- From: "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Wed, 06 Aug 2014 17:16:38 -0700
Hasn't everyone seen the pendulum in the museum knocking over the
blocks?
Wonder where I saw that? BIG one! Same one had the giant whisper
dishes.
You could use one of these small IMU's they have today and write a
program to cancel out most of that. This little ardupilot board could do
that.
Anyway I'm done speculating on this project.
Too much other stuff going on. Somebody make one, if you want I can
make you a feed for the magnetron.
send me a drawing.
Monroe
> -------- Original Message --------
> Subject: [AR] Re: [UK OFFICIAL] Re: NASA test of quantum vacuum plasma
> thruster (was "Anyone heard of this?")
> From: Peter Fairbrother <zenadsl6186@xxxxxxxxx>
> Date: Wed, August 06, 2014 4:46 pm
> To: arocket@xxxxxxxxxxxxx
>
>
> On 06/08/14 23:19, Pierce Nichols wrote:
> > That's why the pendulum should be a string.
>
> Nope, that doesn't work either. Get a gyroscope, tie a string to one
> end, and see ...
>
>
> Or better, get a gyro with a horizontal axis, tie a string to its frame,
> and run it up slowly. Different effect, but the string will still bend
> to the side while the gyro is running up or slowing down.
>
>
> Any pendulum is actually pretty easy to fake, sorry about that folks.
>
>
>
>
> -- Peter Fairbrother
>
>
> >
> > -p
> >
> > On Aug 6, 2014 3:04 PM, "Peter Fairbrother" <zenadsl6186@xxxxxxxxx
> > <mailto:zenadsl6186@xxxxxxxxx>> wrote:
> >
> > On 04/08/14 13:18, Aplin Alexander T wrote:
> >
> > Classification: UK OFFICIAL
> >
> > Handling Instruction: /DISCLAIMER - this is a personal e-mail
> > and only
> > represents only the views of the sender/
> >
> > Jake Anderson:
> >
> > I do like the idea of the test being done in basically a
> > clear bell jar
> >
> > inside a (large) Faraday cage.
> >
> > I also like the pendulum, however I'm less keen on the piezo
> > pressure
> >
> > sensor.
> >
> > I suggest a laser interferometer aimed at the pendulum.
> > If you want to verify thrust in a direction put 2 test
> > devices on it,
> >
> > have the oppose each other, turn one on you should get a
> > displacement in
> > one direction, turn it off you should return to zero, >turn the
> > other on
> > displacement in the opposite direction, you don't need to make any
> > changes inside the test device to perform the test which is nice.
> >
> > FWIW Jerry Pournelle (SF author and former aerospace engineer who
> > previously encountered the ‘Dean Drive’) is also pro the
> > ‘pendulum in
> > vacuum’ test method:
> >
> >
> >
> > I don't think that's enough - at the least you need two joints, one
> > at the top and one at the bottom of the pendulum arm. Otherwise a
> > clever fraudster could simply move the center of mass of the
> > drive/bob to one side, and the arm would tilt.
> >
> >
> > Worse, even a two-joint arm would not be enough - a suitably
> > oriented attitude control gyroscope could still cause the main arm
> > to tilt.
> >
> >
> > I'm not sure even three joints is enough, though I'm not certain of
> > that - spinning up a gyroscope might cause a tilt for long enough
> >
> >
> > -- Peter Fairbrother
> >
> >
> > http://www.jerrypournelle.com/__chaosmanor/dean-drive-and-__nasa/
> > <http://www.jerrypournelle.com/chaosmanor/dean-drive-and-nasa/>
> >
> > And
> >
> >
> > http://www.jerrypournelle.com/__chaosmanor/dean-drive-and-__many-other-matters-a-mixed-__mail-bag/
> >
> > <http://www.jerrypournelle.com/chaosmanor/dean-drive-and-many-other-matters-a-mixed-mail-bag/>
> >
> > **
> >
> > *Alex Aplin*
> >
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> > Its unauthorised use, disclosure, storage or copying is not
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> >
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