Aircraft engine nacelles make a significant contribution to the skin friction drag of aircraft and as such are an attractive candidate for the application of drag reducing laminar flow technology. At the beginning of 1993 two European, EC supported collaborative programmes were launched in order to pursue laminar flow aircraft technology; The European Laminar Flow Investigation (ELFIN II) and Laminar Flow Research Action (LARA). Both programmes include significant tasks concerned with engine nacelle drag reduction.
The global objective of the tasks is to design, using the combined resources and computational fluid dynamic codes of the partners, a viable optimum laminar flow nacelle, and validate this design using wind tunnel tests.
LARA is an 18 month programme which will evaluate nacelle low speed off design performance.
Funding SchemeCSC - Cost-sharing contracts
DH9 6SR Stanley
16451 Argyroupolis -Athina
8316 PR Marknesse
28850 Torrejón De Ardoz Madrid
SW1E 6AT London
581 88 Linköping
BS8 1TR Bristol, Clifton