Pulkovo Aviation Enterprise Flight 612 was a scheduled passenger flight operated by Saint Petersburg–based airline Pulkovo Aviation Enterprise, flying from Anapa Airport to Pulkovo Airport in Saint Pe
RA-85185, the Tu-154 involved, photographed in 2004
Memorial for the crash victims
Stall (fluid dynamics)
Videos
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack exceeds its critical value. The critical angle of attack is typically about 15°, but it may var
Pulkovo Aviation Enterprise Flight 612
…39,000 feet (12,000 m). Just before 15:35, they reported to ATC reaching FL 390. At 15:35:02, the crew disengaged the autopilot. Almost immediately, the stall warning sounded and then the flight's angle of attack increased to 46 degrees while its forward airspeed dropped to zero. The flight sent an SOS signal and…
Airflow separating from an airfoil at a high angle of attack, as occurs at a stall.
A Schweizer SGS 1-36 being used for deep-stall research by NASA over the Mojave Desert in 1983.