Water Crash Dynamics and Structural Concepts for Naval Helicopters

Period of Performance: 02/25/1998 - 02/25/2000


Phase 2 SBIR

Recipient Firm

Dynamic Response, Inc.
15207 Valley Vista Blvd.
Sherman Oaks, CA 91403
Principal Investigator

Research Topics


A phase II research program is presented which is designed to provide the DoD, DoT and industry with the design tools and procedures for improved water impact survivability design criteria and designs. The Phase II research is a continuation of a phase I effort in which the technical feasibility and merits if using FEM and hybrid analysis methodology was demonstrated. The proposed program offers three major tasks that include 1) extended analysis using available scale model ditching test data and refined analytical models, 2) a test validation program, and 3) demonstration of applicability to DoD, DoT and industry. The test validation is unique 1) there ate 2 planned controlled full scale instrumented water impact tests to be performed 2) data is being contributed for 2 other controlled full-scale instrumented water impact tests from industry-government Cooperative R&D agreement (CRADA), 3) a first-time validation of available methodology for severe, but survivable water impacts will be performed, and 4) the test program will expedite the development of a government facility for future water impact test and design considerations. In addition to these features the proposed program will create a broad water impact database here-to-fore not available, and provide validated methodology for the development of design criteria, design concepts and compliance procedures. The benefit of this effort will be shown to be applicable to civil as well as military aircraft, to fixed-wing as well as rotary wing aircraft and to flotation systems as well as airframe design.