What this work contributes
Shows how thermal expansion, center-of-mass shifts, and magnetic interactions can imitate small thrust. The tested cavity configurations yielded no anomalous force above a 10–30 nN noise level across the reported frequency scans.
Where the evidence stops
The result constrains the tested devices and claimed mechanisms; it is not an experiment on every conceivable field drive. Its central lesson is to demonstrate control of systematic errors before interpreting a residual.
Original source
M. Tajmar, O. Neunzig, M. Weikert. High-accuracy thrust measurements of the EMDrive and elimination of false-positive effects. CEAS Space Journal 14, 31–44; first published 27 July 2021 (2022).
First published online: 2021. Journal issue year: 2022.
DOI: 10.1007/s12567-021-00385-1
How we use it
This record belongs to Measurement & replication. Its evidence label describes the cited work, not the maturity of a Metric Flight device. Follow the original methods, corrections and conditions before transferring a result to a different geometry or scale.
Editorial note reviewed 19 October 2026. AI assisted research discovery and synthesis. Citation metadata and claims were checked against primary publication or institutional records; full-text access varies. Read the source for the complete method.