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The following technical papers and research provide background information on airworthiness topics, but don’t necessarily reflect our policy.
Numerical investigation into the crashworthiness of automotive child restraints in transport category aircraft
RMIT University undertook a research project under the sponsorship of CASA with the objective of developing a better understanding of the crashworthiness of automotive child restraint systems (CRS) in transport category aircraft under emergency landing dynamic conditions. Three different CRS installation methods were considered: the aircraft seat lap belt, the European ISOFIX system, and the North American LATCH system. Typical airline economy class seating configurations involving forward-facing CRS installed by each of these methods were evaluated in terms of the level of protection offered to the CRS occupant, the injury potential for a passenger seated directly aft of the CRS, and the effect of the CRS on aircraft seat loading and dynamic behaviour.
Prior research projects carried out by CASA into child restraint were used as the basis for the development and validation of a computer model that was used to carry out experiments in a virtual environment. This method allowed many seat configuration parameters to be analysed simultaneously and also allowed the analysis of some parameters which were unable to be measured by physical testing.
Investigation of automotive child restraint installation methods in transport category aircraft - phase II
This research continues the investigation into the dynamic performance of automotive child restraints when fitted to an economy class airline seat. It compares the performance of child restraints when attached by ISOfix, LATCH and lap belt installation methods, a child in their own airline seat, and lap held infants restrained by a supplementary loop belt. The testing also gathered data for Lower Anchorages design standards that will be required by the ISOfix and LATCH attachment methods. Additionally, the testing investigated injury levels to an adult seated in the row behind an automotive child restraint.
Investigation of automotive child restraint installation methods in transport category aircraft
This is a report into the dynamic performance of automotive child restraints when fitted to an economy class airline seat. There was specific focus on the top tether contribution to dynamic performance as typically configured by airlines in Australia. Additionally, it compares this performance of current Australian infant restraints to ISOfix type infant restraints. ISOfix restraints don't use the car/aircraft seat belt for retention, but rather a steel link that latches to a mating fitting in the seat bight. ISOfix type restraints are due to be included in the Australian Standard for Automotive infant restraints (AS/NZS 1754) in 2008.
A perspective on the use of nondestructive testing in the inspection of aging aircraft
This is a paper presented to the Aging Commuter Aircraft Conference, Canberra, August 1992. A nondestructive testing (NDT) inspector with forty years’ experience cautioned damage tolerance proponents about their increasing reliance on NDT to manage structural fatigue in aging aircraft.
Human injury model for small unmanned aircraft impacts
This paper describes an injury prediction model for the impact of small remotely piloted aircraft (RPA) into a person on the ground. The model provides estimates of injury severity as a function of the RPA’s mass and impact velocity. One of the goals is to determine a non-lethal RPA mass for purpose of drafting air traffic regulations for the rapidly developing civil RPA market.
Potential damage assessment of a mid-air collision with a small remotely piloted aircraft
This paper analyses the damage potential to manned aircraft from a mid-air collision with a small unmanned aircraft. The scenarios of engine ingestion and impacts into fuselage and cockpit windscreen are considered. The aim of the study is to provide velocity estimates, above which penetration of the aircraft structure can be expected. The consequences of the penetration will depend on the impact location, and are not explored in this report.