Crj-200 first officer described wake vortex encounter on takeoff in atl behind a B757.

Narrative:

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.

Original NASA ASRS Text

Title: CRJ-200 First Officer described wake vortex encounter on takeoff in ATL behind a B757.

Narrative: 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.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1039235
Time
Date	201209
Local Time Of Day	1801-2400
Place
Locale Reference	ATL.Airport
State Reference	GA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Aircraft 2
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter Wake Vortex Encounter