Documents / Document
This is a case resolution report from the U.S. Department of Defense's All-domain Anomaly Resolution Office (AARO), dated February 6, 2025. It covers the January 2015 "Go Fast" infrared video that a Navy F/A-18F recorded off Florida. AARO worked only from the public video and found the object was at about 13,000 feet, not near the ocean surface, and moved at roughly 5 to 92 mph. The report attributes the apparent high speed to motion parallax and states with high confidence that the object showed no anomalous performance.
UNCLASSIFIED 7 UNCLASSIFIED Table I contains the data extracted from the video footage at t1 and t2. Range and altitude were converted to metric units to maintain consistency in calculations. The F/A-18 bank angle was measured using the yellow lines drawn over the level flight and roll indicator lines in the display as depicted in Figure 1. This angle, denoted by θB, was approximately 14° from t1 to t2. An average aircraft altitude of 7,621 m was assumed over this time frame. The speed in Mach number was converted to m/s [ref 5] at the altitude of the F/A-18, resulting in an average speed of about 190 m/s over the time frame. Table I: Data extracted from frames at 4239 seconds and 4252 seconds in the “Go Fast” video. UAP Location Calculation Methodology This section contains step-by-step calculations for finding the UAP locations relative to the F/A- 18 at two points in the “Go Fast” UAP event. This provides the reader with a foundational understanding of the methodology and rough estimate of the speed and heading of the UAP. The methodology will then be applied to all frames in the t1 to t2 interval in a later section. Since the data do not provide an absolute location for the F/A-18 at t1, the aircraft was arbitrarily placed at a reference point that simplified the problem: the origin of an x-y-z cartesian coordinate system. The axes of this system were defined in a manner consistent with the MISB ST 0601.19 [ref 3, p. 12] and provided here in Figure 2. The aircraft longitudinal axis is the +x- axis, the transverse axis the +y-axis, and the vertical axis the +z-axis.Parameter Frame 1 Sensor Display Value Frame 1 Converted Frame 2 Sensor Display Value Frame 2 Converted Time 4239 sec 0 sec 4252 sec 13 sec Sensor Azimuth 49° 49° 57° 57° Sensor Elevation -29° -29° -35° -35° Range to Target 4.0 NM 7408 m 3.4 NM 6297 m Aircraft Altitude 25,000 ft 7620 m 25,010 ft 7623 m Aircraft Velocity 0.61 M 188 m/s* 0.62 M 191 m/s* *-assumes speed of sound (M=1) at 25,000 ft is 601 knots [ref 5]
Document, cited by the archive. The PDF is mirrored here; the original link is above. 26 pages are in the text index: search them above, or from the library's search.