Reconstruction of Potential Flight Paths for the January 2015 Gimbal UAP
Robert M. Powell
AIAA Aviation 2023 · 2023
Physics-based flight-path reconstruction of the January 21, 2015 Gimbal FLIR encounter finds the object's heading and apparent rotation are internally consistent at crew-reported range but fall outside the performance envelope of any known aircraft.
Brief
Powell applies the geometric constraints of the Navy's AN/ASQ-228 ATFLIR targeting pod, azimuth, elevation, and derotation mechanics, to reconstruct possible flight paths for the object recorded in the declassified Gimbal video. The analysis addresses the central interpretive question about the video: whether the apparent axial rotation of the object is an artifact of the pod's derotation mechanism or reflects actual object motion. At the range reported by the aircrew, the object's derived heading and the observed rotation signature are found to be mutually consistent, and the implied flight characteristics are incompatible with any known conventional aircraft or unmanned system. The paper was accepted for presentation at AIAA Aviation 2023, placing UAP flight-path analysis inside a mainstream peer-reviewed aerospace engineering venue.
Metadata
- Category
- Phenomenon
- Venue
- AIAA Aviation 2023
- Type
- Conference proceedings
- Year
- 2023
- Authors
- Robert M. Powell
- Access
- Paywalled
- Programs
- Scientific Coalition for UAP Studies
- Instruments
- AN/ASQ-228 ATFLIR
- Data sources
- U.S. Navy declassified Gimbal FLIR video, DoD-released UAP footage
- Tags
- UAP-physics, flight-path reconstruction, FLIR analysis, technosignature, military encounter
Key points
- The apparent rotation seen in the Gimbal FLIR video, the feature that named the clip, is examined against the derotation geometry of the AN/ASQ-228 ATFLIR pod to distinguish sensor artifact from object behavior.
- At the crew-reported range, the object's heading and the observed rotation signature are internally self-consistent, ruling out a simple sensor-artifact explanation for that specific combination of observables.
- The derived flight characteristics at crew-reported range are incompatible with the performance envelope of known manned aircraft, unmanned systems, or atmospheric phenomena.
- The reconstruction methodology is grounded in published ATFLIR pod specifications and basic kinematic geometry, making the analysis independently reproducible.
- Acceptance at AIAA Aviation 2023 represents one of the first times a UAP flight-path reconstruction passed review by a major mainstream aerospace engineering society.
- The Gimbal encounter is dated January 21, 2015, and the video was among the three Navy clips officially acknowledged and released by the DoD in April 2020.
Most interesting
- The video's name derives directly from the ATFLIR's gimbal derotation mechanism, the same hardware feature whose behavior is central to Powell's analysis.
- Powell co-founded the Scientific Coalition for UAP Studies (SCU), which published the 270-page Nimitz technical report in 2019; the Gimbal paper extends that methodology to a second Navy case.
- AIAA, whose membership includes NASA engineers and major defense contractors, accepting this paper for its Aviation conference is a notable institutional signal about where UAP physics analysis now sits in the aerospace mainstream.
- The Gimbal object appeared to be flying into a strong headwind with no visible propulsion signature, a detail that compounds the incompatibility with known aircraft when combined with Powell's range-consistent heading reconstruction.
- Unlike the Nimitz/TicTac encounter, the Gimbal event has no corroborating USS Princeton SPY-1 radar track in the public record, making the ATFLIR geometry the primary, and nearly sole, quantitative constraint on the reconstruction.