This paper describes a study of the wake survye method for drag measurement for bodies with large unsteady seperated wakes. The intended application is airfoil testing with simulated ice accretions. Detailed surveys of the wakes of an S809 18"-chord airfoil, with and without simulated ice, and a 1" diameter cylinder were acquired. In the investigation, a 7-hole probe, a Pitot total-pressure probe, a cos² probe, and a single element hot-wire probe were used to measure total and static pressures, all three components of wake velocity and the turbulence intensity. Th effect of the type of probe on the pressure measurement in the turbulent flow was analyzed. The Jones’ formula and van Dam’s equation, which includes the effect of the Reynolds stress, were used in the calculation of the profile drag coefficient. Th results showed a significant effect of wake turbulence on thee pressure probe measurements and the calculated dragg coefficient when the turbulence intensity was greater than 8 percent. The drag coefficient results from the 3 different probes and the two wake drag equations could be brought into reasonable agreement by correcting the data based on the measured wake turbulence.