Sunday, 14 February 2010

Best current propulsion blog

This blog was set up in response to the decline of the AmericanAntigravity site, and before the Tau Zero Foundation had got underway. Now that Centauri Dreams has rebranded itself the news site for Tau Zero, I would refer all those interested to that site for the latest news and information, partly because they have more time to devote to it and with a view to reducing the huge number of sites dedicated to the subject, which only seems to increase confusion and the propagation of errors.Link

Saturday, 1 March 2008

More Gravity Anomalies?

Following on from the Pioneer Anomaly, there now appear to be several other spacecraft undergoing anomalous accelerations.

Tuesday, 11 September 2007

Warp Drive Symposium - London

If you can make it, this symposium at the British Interplanetary Society in November looks interesting. Not many confirmed speakers as yet, though. For those of you unable to make it, the following links to work by the known speakers may be of interest:

Remo Garattini:
Spacetime Foam and Vacuum Energy [PDF]
The Cosmological Constant as an Eigenvalue of a Sturm-Liouville problem and its renormalization [PPT]

Claudio Maccone:
Levi-Civita Effect in the polarizable vacuum (PV) representation of general relativity [PDF]

Unfortunately I couldn't find any references to the work of Jeremy Gardiner. If you know of any, let me know & I'll add it to the list!

Saturday, 8 September 2007

Reversing the Casimir Effect

News on this development at St Andrews University, using metamaterials with negative refractive indices, first appeared last month, but there's now also a quite entertaining page explaining the principles for a general readership.

Useful Amounts of Photon Propulsion?

Just noticed this, apparently the first photon propulsion system to produce practical, useful amounts of force.

Wednesday, 4 April 2007

Hiddink's One Terminal Capacitor

Some time ago I was made aware of an overlooked invention from the 1970s, seemingly the result of a thought experiment, perhaps one of Faraday's himself, concerning the effects of turning a normal 2-terminal capacitor into a single terminal version. A description of the circumstances of the invention and its consequences in the words of the inventor (Joseph Hiddink) may be found here. It seems to have the potential (pun intended) for several applications - from the patent description:

Another object of the invention is to provide the means for producing high potentials which can be positive or negative in nature and which are adapted for use in the study of nuclear structure and nuclear reactions.

Still a further object of the invention is to provide a novel and improved means for constuction and operation of a high power particle generator.

Another object of the invention is to provide a novel and improved device for generating potentials of either positive or negative nature of such magnitudes so as to attract, bend or repulse radiation.

Still another object of the invention is to provide novel and improved construction of a device for generation of potentials of either positive or negative nature, to attract or repulse mass.

A further object of the present invention is to provide novel and improved means and its construction for making an inexpensive, yet effective Intense Neutron Generator with possibility for slow to fast neutron emission.

It now remains for someone with sufficiently deep pockets and well-shielded facilities to replicate it, as the inventor is now quite old and unable to fund further experiments himself.

Tuesday, 6 March 2007

Tau Zero - the last, best hope for BPP?

I noticed recently that following the lapse of funding for projects like NASA's Breakthrough Propulsion Physics programme and BAE Systems' Greenglow, the former NASA BPP head Marc Millis has begun the Tau Zero Foundation in his spare time. While it has yet to have its own independent web presence, I have high hopes for it as it encompasses a wide range of possible propulsion techniques, and like the prior NASA effort, aims to attempt a serious and sceptical (though this has unfortunate CSICOP-like kneejerk-debunking connotations these days; maybe zetetic would be a better term) approach.