Skip to Content

SARAH (Increased Safety and robust certification for ditching of aircrafts and helicopters)

In corso

Funding organisation(s): European Union (H2020)
Project coordinator organisation: IBK-INNOVATION GMBH & CO. KG (Germany)
Project overall cost: 6636 kEUR
CNR Institute(s) involved: INM
CNR scientific focal point: Alessandro Iafrati
Project start date: 01.10.2016
Project duration: 36 months
CNR grant: 1292 kEUR
INM grant: 1292 kEUR
Costs coverage: 100%
Project description, objectives and results:

SARAH is concerned with establishing novel holistic, simulation-based approaches to the analysis of aircraft ditching. It is build up from a consortium of experts from OEM industries, experienced suppliers of simulation technologies, established research institutions and representatives of the certification authorities. Results of SARAH are expected to support a performance-based regulation and certification for next generation aircraft and helicopter and to enhance the safe air transport as well as to foster the trustworthiness of aviation services. Aircrafts and helicopters often travel above water and thus have to prove a safe landing under emergency conditions. The specific challenge is to minimize the risk of injury to passengers and to enable safe evacuation. Accordingly, the motion of the aircraft/helicopter along with the forces acting on the structure are studied for controlled water impact during the design phase of an aircraft. Ditching has close links with crash simulation, but also distinctive features. Examples refer to hydrodynamic slamming loads on airborne vehicles and complex hydromechanics (partially at very large forward speeds) as well as the interaction of multiphase fluid dynamics (involving air, water, and vapor phases) and structure mechanics. Design for ditching involves more than the analysis of loads and subsequent strengthening of the structure. It often requires adjustment campaigns for the handling of the vehicle during approach and the identification of favorable approach/flight-path conditions in line with the pilots flying capabilities to minimize the remaining kinetic energy of the vehicle to be transferred into the water.