D5.3: Report on test data for double-curvature rigid specimen

Abstract

In this report the data of the high-speed ditching tests performed at the CNR Institute of Marine Engineering (former CNR-INSEAN) on double curvature specimens are presented. The report provides details on the specimen shapes as well as on their design and built. The shapes and conditions of the tests are basically those given in Deliverable D5.1 but after the discussion had during the M6 and M12 meetings, an additional shape, intermediate between S1 and S2, named S1B, is also considered. Some aspects concerning the electronic instrumentation and its calibration are also reported. The purpose of the high-speed ditching tests on double curvature specimen is to investigate the role of transverse and longitudinal curvatures on the ventilation/cavitation phenomena taking place at the rear of the fuselage. Besides helping the interpretation of the physics, the data of the tests are very important to assess the capabilities of computational approaches to correctly represent those phenomena which may have important consequences on the dynamics of the aircraft at ditching