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2026-10-04 — NASA Technical Reports Server (NTRS), via Google

Query: Google ntrs.nasa.gov Robertson Li Koczor Noever superconductor gravity Marshall Podkletnov. Hits: - G. A. Robertson, "On the Mechanism for a Gravity Effect using Type II Superconductors", NASA MSFC Advanced Systems and Technology Office, 1999. https://ntrs.nasa.gov/api/citations/19990046249/downloads/19990046249.pdf — saved as research/files/NTRS-19990046249-Robertson-1999.pdf. - D. Noever and R. Koczor, "Granular Superconductors and Gravity", NASA MSFC Space Sciences Lab, 1999. https://ntrs.nasa.gov/api/citations/19990023209/downloads/19990023209.pdf — saved as research/files/NTRS-19990023209-Noever-1999.pdf. - N. Li, D. Noever, T. Robertson, R. Koczor, W. Brantley, "Static Test for a Gravitational Force Coupled to Type II YBCO Superconductors", Physica C 281 (1997) 260- ; NTRS https://ntrs.nasa.gov/citations/19990039542 (not opened). - Also in results (not opened): DIA FOIA reading room, "The Role of Superconductors in Gravity Research" (2010) https://www.dia.mil/FOIA/FOIA-Electronic-Reading-Room/FileId/237631/ ; M. Millis, "Prospects for Breakthrough Propulsion From Physics" (2004, NTRS).

Findings

  • Robertson 1999 [read: research/files, p.1]: formulates a percent-mass-change equation from Woodward's transient mass shift applied to Josephson junctions in a type II superconductor, compares it with the maximum mass change reported by Podkletnov, and proposes an experiment. Robertson is Znidarsic's 2011 co-author; this is the earlier NASA-era root of the Josephson-junction part of "The Flow of Energy" (claim 4).
  • Noever & Koczor 1999 [read: research/files, p.1]: with a sensitive gravimeter, bulk YBCO levitated in a DC field and exposed (without levitation) to low-field AC fields; changes in gravity signal less than 2 parts in 1e8 of g. This is a NASA MSFC test of the Podkletnov-type effect without the full rotating + RF configuration; bears on the empirical anchor of claim 1 (Podkletnov 3 MHz x 1/3 m).
  • Consistent with the inventor's book account that MSFC ran Podkletnov-inspired tests in 1997-1999 and did not complete RF-field runs (book claim; the NTRS documents show static/AC tests, not the RF configuration). Recheck: yes (Li et al. 1997; DIA 2010 survey; NTRS search for "Robertson" "Josephson" 2000-2011; any MSFC report mentioning Znidarsic).