The following chart was calculated compliments of Ray Prouty circa 1998. for the NSHP
Aircraft Model Gross Weight Down Wash Velocities (MPH) Down Wash Velocities at Half Fuel Load
S-61N 20,500 51.5 48.6
S-70(HH-60J) 21,884 61.5 58.6
S-92 25,200 62.9 59.8
H-53E 69,750 74.6 70.3
Cougar2 21,494 61.6 59.1
NH-90(NFH) 22,046 61.9 58.8
EH-101 32,190 65.6 61.7
MV-22 55,000 97.4 91.1
Last edited by Jack Carson; 12th Dec 2022 at 12:13.