Inertial Mass Modification and Reactionless Propulsion
A closed RF cavity was reported to produce a small thrust-like signal in vacuum.
This records the experimental claim itself; it does not establish a reactionless mechanism.
The NASA technical report documents the positive thrust-like signal as reported. The existing wording already frames it as a report rather than a verified reactionless effect.
NASA NTRS 20170000277
Stable NASA technical-report destination. No PDF page locator is published here unless independently verified.A positive experimental report is evidence that a signal was reported, not that momentum conservation was violated.
High-accuracy EM Drive metrology identified false-positive effects that can mimic thrust-like signals in this device family.
The follow-up directly targets thermal, magnetic, and balance systematics in this device family.
The earlier wording could read as if every thrust-like result had been reproduced as a false positive. The source supports identified false-positive effects in high-accuracy EM Drive metrology, so the public sentence is narrowed.
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More stringent EM Drive metrology found false-positive forces capable of reproducing thrust-like behavior.
DOI 10.1007/s12567-021-00385-1
Stable article identifier verified from the source URL. No page, table, figure, or section locator is claimed unless separately stated.Constrains this experimental architecture; it does not logically exclude every conceivable propellantless mechanism.
NASA breakthrough-propulsion review distinguishes established physical effects, unresolved physics questions, and speculative propulsion concepts.
NASA program review provides a useful boundary for what is experimentally established versus proposed.
The NASA review supports separating established physics, unresolved physics questions, and aspirational propulsion concepts, but this is an editorial boundary rather than an experimental result.
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Breakthrough-propulsion research must separate measurable physics questions from aspirational propulsion concepts.
NASA NTRS 20040070788
Stable NASA technical-report destination. No PDF page locator is published here unless independently verified.A research-program assessment is not experimental validation of any specific breakthrough drive.