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Expanded Use of Modeling and Simulation in Ditching Applications
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2025-02-01
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By Delta G Design Inc ...
[PDF-2.68 MB]
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Abstract:Applicants seeking Federal Aviation Administration (FAA) certification for an aircraft are required to provide substantiation of the aircraft’s ability to successfully execute a controlled emergency landing on a body of water per 14CFR Part 25.801, also known as a ditching maneuver. FAA certification for ditching requires that the passengers and crew can survive, with minimal risk of injury, and successfully evacuate the aircraft prior to it sinking. The post evacuation state of the aircraft is not a consideration. Traditionally, ditching certification applicants have had two approaches available to them: establishing similarity to an already certified aircraft sufficient to satisfy the FAA or performing physical testing using scale models and/or a full airframe. While these two approaches are still acceptable today, advances in computational computer tools have created a third approach that may be appropriate for a ditching certification applicant. This document discusses best practices for model development and simulation of each phase in a ditching maneuver (approach, impact, landing, floatation, and evacuation). This report also recommends requirements for applicants simulating an aircraft’s ditching performance, and questions regulators can ask to evaluate an applicant’s simulation.
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