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Old 25th Apr 2019, 06:20
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ORAC
Ecce Homo! Loquitur...
 
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F-15 Elmendorf Crash Report

My first thought was what was the base height for DACT? Fighting down at 5-6K and departing into an inverted flat spin makes me think the pilot was incredibly lucky to survive.

https://www.military.com/daily-news/...ve-g-spin.html

“....The pilot in the mishap aircraft was maneuvering defensively in relation to the F-22 at an altitude of about 5,400 feet, and traveling at about 180 knots, or 207 miles per hour, according to the report. Then the pilot initiated a vertical climb, bringing the F-15 to a nose height of 65 degrees, "20 degrees of right bank, 39 degrees Angle-of-Attack," flying at 1.2 Gs. The plane reached an apex of 6,300 feet, traveling 105 knots or 120 mph, the report stated.......

But the pilot did not feel the plane was flying as desired, and attempted to break the AOA -- or the angle between the reference line of a wing or the airplane itself to the relative oncoming wind -- and get the nose tracking faster during the perceived right turn, the report states. The pilot forced the plane's forward stick with full right rudder in an attempt to propel the jet in the chosen direction. Instead, the nose "pitched down and to the right to 65 degrees nose low, 110 degrees of right bank, -26 degrees AOA and G-forces decreasing from 1.2 to -0.3 Gs," according to the report.

By entering negative G-forces, or a downward acceleration faster than the rate of natural freefall, the aircraft "experienced a negative G departure from controlled flight with a snap roll entry to the left that transitioned to an inverted, negative G spin," investigators said........


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