This was recently posted on the HPCC-Soace GmbH site:
On 15 Dec. 2011, Prof. J. Hauser gave an introduction to the Physics of Propulsion from Gravity-Like Fields (shortened version of this presentation can be downloaded here) at the Institut für Lufttransportsysteme (ILT) of the DLR in Hamburg-Harburg, Germany.
There is both substantial theoretical and experimental (Tajmar 2006-2011, Graham, and possibly Gravity Probe-B) evidence that extreme gravitomagnetic and gravity-like fields might exist, not predicted by any of the so called advanced physical theories. Thus, the current belief in the existence of exactly four physical forces might have to be extended, in particular, with regard to recent experiments.
For instance, concerning special relativity (CERN OPERA superluminal neutrino speed) as well as general relativity (rotational speed of stars in gas rich galaxies and dark matter, S.S. Mc Gaugh, Maryland). Also, the so called physics beyond the standard model of particle physics like supersymmetry, string theory with 10 or 11 dimensions, multiverse etc. might not reflect physical reality, since the Large Hadron Collider, except for the possibility of a Higgs boson at about 125 GeV, has not found any new particles up to 600 GeV.
Furthermore, the ESA Integral satellite measurements invalidate predictions from quantum gravity. In addition, the computer experiments by Loll, Ambjorn et al. require a repulsive gravitational force (in form of Einstein’s cosmological constant) for a four-dimensional spacetime to evolve and seem to favor a de Sitter topology. Last but not least, the question of the speed of gravity does not appear to have been settled (van Flandern 1998, Rowlands 2007 etc.).
In conclusion, there is evidence that gravity is more than simple Newtonian gravitation, and perhaps attractive and repulsive gravitational forces exist. It is possible that an interaction between gravitation and electromagnetism at cryogenic temperatures occurs, as indicated in recent gravitomagnetic experiments. So far, a set of ten experiments was identified that have the potential to lead to novel physics not covered by mainstream theoretical concepts. As a result of these experiments, novel particles and fields might be required in conjunction with different types of matter, leading to new technologies in (space) transportation and direct energy generation.