Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Distraction; Workload
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Became Reoriented
Human Factors
Prior to our takeoff; a B757; an A321 and a Q400 departed. We took off and immediately experienced wake turbulence associated with the previous departures. The RNAV SID calls for a nearly immediate and large course change to the east at 520 feet. At 500 feet I called for autopilot on to comply with best practices for RNAV SIDs. At acceleration altitude the Pilot Monitoring (PM) called acceleration altitude. Because the autopilot was on; we both reached for the FGC SPD button. I said; since the autopilot is on; I command the FGC. I called for flaps up. The First Officer (FO) subsequently ran the After Takeoff checklist. As the Pilot Flying (PF); I was saturated with flying the airplane as the departure has several short tight turning legs. Once we got up and out of the terminal airspace; I lowered the nose to accelerate the aircraft. At that time the aircraft wasn't accelerating normally. I scanned the cockpit and observed the Flaps were still in the 9 position. I observed our speed at that time to be 261 KIAS. I immediately reduced thrust to below 250 KIAS and retracted the flaps. We continued the flight and landed without incident. Made an AML entry. Cause: high workload and task saturation. This was an error that was made during a high workload time period and the associated confusion of who manipulates the FGC during an autopilot on departure for RNAV SID compliance. As such; a thorough debrief and review of the after takeoff checklist and flow is my suggestion. Also; highlighting the PF/PM duties and how they change depending on whether the autopilot is turn on at 500 feet or just the YD is turned on.
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Embraer jet flight crew reported a wake turbulence encounter combined with a complex departure resulted in failure to retract flaps on schedule.