Thanks for the PBY data. I have been researching the crash of a USAAF Consolidated AO-10 Catalina # 44-34096, that crashed August 1, 1945, 25 miles southwest of Grants, New Mexico. While on a flight from Hunter Field, Georgia to Mather Field in California, the Catalina developed engine trouble and crashed.Found in the wreckage was an external gas tank that was hung from the wing using a bomb schackle. See attached photo. I'm trying to determine to capacity of the tank? Also found in the wreckage were the Yagi antennas. By reading your data it appears the yagi only caused only a 5 knot reduction in speed, I thought it was more than that. I do know the aircrews wanted all the speed they could get and anything that reduced it was bad. I also interviewed a number of WWII vets they stated the PBY took off at 100 Knots flew at cruize speed of 100 knots and landed at 100 Knots. The data seems to support their story. I have read the PBY max speed was 180 MPH but none of the vets supported that. Maybe in a crash dive? The wings would most likely break off at that speed? I love the old PBYs, they served well and the Black cats were effective.
DaveT