CFD/CSD Loose Coupling is developed

Description

Loose Coupling is a form of interface between Computational Fluid Dynamics and Computational Structural Dynamics codes. It provided an improved way of modelling steady state conditions. It was developed by Johnson at NASA and was first reported in the following reference,

Tung, C.; Caradonna, F. X.; and Johnson, W.: The Prediction of Transonic Flows on an Advancing Rotor. Journal of the American Helicopter Society, vol. 31, no. 3,  July 1986, pp. 4–9.

(Note: Only the month and year of this milestone are valid)

(Source: Johnson W., Milestones in Rotorcraft Aeromechanics, NASA/TP-2011-25971, May 2011, Page 49)