Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types; Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related; Procedure
It was my leg; and all preflight events were normal. After being cleared for take off behind a B757; the takeoff run was normal. After rotating and breaking ground a positive speed trend was observed and positive climb rate and 'positive rate' was called. I called for 'Gear-up/Speed Mode'; and was hit by a slight wake turbulence. The aircraft rolled about 10 degrees left-wing down; and the stick-shaker activated for about 1/2 a second. I lowered the angle of attack; and the aircraft continued as normal. We completed the climb/configuration and completed the checklists as normal. There were no deviations of airspeed; altitude; or track. The upset was not great; and at no time did the aircraft feel out of control. We were cleared for takeoff by ATC using the prescribed procedures; but with the statement 'Caution for the wake turbulence from the preceding Boeing 757'. As always in ATL; we must be on guard for this; and the training department even trains us in simulators for this exact event. I felt I have been given the appropriate training; and felt it was handled accordingly.
CRJ-200 First Officer described wake vortex encounter on takeoff in ATL behind a B757.