I'm trying to make the constant-speed 84 in diameter 2-bladed propeller for the Cessna 310A, which has it's high pitch stop at 22.5°, and at 5000 ft, with 180 HP, 2400 RPM it should cruise at 206 KTAS, and with the current flight model 458 pounds of total thrust (229 lbs per engine) are needed to achieve this speed with the current FDM. Problem is, when I do a Design in JavaProp for this data, it gives me a blade angle of 27.9° or so (at the 0.75 r/R station) - that's already past the high pitch stop !
I'm using Clark Y Re=100000 for all four airfoil stations. Can anyone help on this ?