This paper contains unabridged versions of the following two final project reports, each covering their respective parts of the research into the crashworthiness of helicopter emergency floatation systems:
I. WS Atkins Consultants Ltd. Report No.AM3504/R006, Issue 04:
This study included: a review of accident data and public domain literature relating to water impact; the development and validation of finite element modelling (FEM) techniques to predict airframe accelerations and forces during water impact; the modelling of three helicopter water impact scenarios (based on actual accidents) using the proprietary FEM code LS-DYNA3D; a review of helicopter emergency flotation equipment design; a top-level cost-benefit analysis of a number of proposed modifications; a review of the requirements and advisory material relating to water impact, ditching and occupant egress.
II. BMT Fluid Mechanics Ltd. Document No.44134r55 Release 5:
This study comprised an assessment of the range and variability of impact loads experienced by typical emergency flotation systems during water impact, using a Monte Carlo simulation procedure based on simplified empirical and theoretical formulae. The purpose of this study was to complement the finite element analysis performed by WS Atkins Consultants Ltd
I. WS Atkins Consultants Ltd. Report No.AM3504/R006, Issue 04:
This study included: a review of accident data and public domain literature relating to water impact; the development and validation of finite element modelling (FEM) techniques to predict airframe accelerations and forces during water impact; the modelling of three helicopter water impact scenarios (based on actual accidents) using the proprietary FEM code LS-DYNA3D; a review of helicopter emergency flotation equipment design; a top-level cost-benefit analysis of a number of proposed modifications; a review of the requirements and advisory material relating to water impact, ditching and occupant egress.
II. BMT Fluid Mechanics Ltd. Document No.44134r55 Release 5:
This study comprised an assessment of the range and variability of impact loads experienced by typical emergency flotation systems during water impact, using a Monte Carlo simulation procedure based on simplified empirical and theoretical formulae. The purpose of this study was to complement the finite element analysis performed by WS Atkins Consultants Ltd
- Status:
- Current
- Review comment:
- -
- Version:
- 1
- Version date:
- 27-Jul-2022
- View file:
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