We went out for a brief tow test today to check adjustments to side foils and to compare performance of original T-foil rudder to newly fabricated larger T-foil rudder.
The attached plot compares the speeds and loads with each rudder T-foil. The speeds are not identical in each case, and other factors such as the tow angle and acceleration may have varied between runs. However, there is some indication that the “new” foil requires a larger towing force at 20-21 knots.
