Gravitational waves above 100 kHz, the subject of PURSUE Release 06 record DOW-UAP-D140, High-Frequency Gravitational Wave Communications, a 57-page Defense Intelligence Reference Document of 6 April 2010 (DIRDs).
The paper says communication is the most important and most immediate application: such waves, it says, pass through all ordinary material things without attenuation, so a narrow beam could link Moscow and Caracas directly through the Earth, with a very low probability of interception. It counts fourteen laboratory generators proposed in 45 years and ten detectors since 1978, and names one proposed detector as showing the most promise. It also says that the detectors built so far fall orders of magnitude short of the sensitivity required, and that many of its predicted parameters will not be verified until a successful experiment is performed. Its roadmap runs from an experimental go-ahead in 2009 to a first space delivery in 2050, and it looks further ahead to remotely generated fusion, propulsion and imaging below ground. Appendix C, which the paper cites as holding its detector concept, is a heading on an empty page.
Another paper in the series, on superconductors in gravity research, says that manipulation of gravity by such waves for propulsion is at present only theoretical (Eugene Podkletnov, Anti-Gravity).
Connections
DIRDs · PURSUE · Anti-Gravity · Eugene Podkletnov · Defense Warning Office