Distributed Roughness Effects on CRM Wing Model

This research report summarizes photogrammetric and aerodynamic measurements of Cold Soaked Fuel Frost on the Common Research Model (CRM). The photogrammetric measurements of frost geometry were made with a new automatic camera system. For reference the surface geometry of three different sandpapers was determined by photogrammetry and laser scanning. The aerodynamic measurements were made with a force balance on lift and two wake rakes on the upper surface boundary layer displacement thickness at the aft end of the model main wing. The aerodynamic changes were related to the frost roughness and thickness.

Distributed Roughness Effects on CRM Wing Model.