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**
AIRCREW/COCKPIT
COMPATIBILITY:
A MULTIVARIATE PROBLEM SEEKING A MULTIVARIATE SOLUTION**

**Keith C. Hendy
Defence and Civil Institute of Environmental Medicine
North York, Ontario, Canada M3M 3B9
AGARD Conference Proceedings No. 491, North Atlantic Treaty Organization, 1990.**

NOTE: The
following are selected extracts from and/or annotations regarding the subject
publication.

**"Aircrew/cockpit
compatibility depends on an interaction between the anthropometry of individual
aircrew members and the geometry of the cockpit. Selection criteria in the past
have attempted to deal with this interaction, but the model was too simple. This
is a multi-variate problem which requires a multi-variate solution. Essentially
the problem is one of charting the region of intersection between the
anthropometric data domain and a set of rules or criteria which define
'operability'. The nature of this problem was demonstrated through computer
simulated fitting trials of subjects in a number of cockpit-like geometries. The
simulations clearly demonstrate that membership in a particular category of
'fit' depends on interactions between workspace and anthropometry which are
geometry specific. Further, the simulations show that the establishment of
analytical expressions to define class membership is complex and appears to
require a non-linear approach. The consequences of these results are discussed
in terms of establishing selection standards and determining design criteria for
cockpits which are compatible with these standards. It is argued that cockpit
design must be based on an extensive sampling of human characteristics in order
that the full range of interactions, between various anthropometric dimensions
and the workspace, is represented. **

**" ... This
paper examines the effects of interactions between individual anthropometry and
workspace geometry with a view to establishing the consequences of these
interactions in developing selection strategies and guidelines for design. The
problem of defining physical compatibility in the workspace, is essentially one
of charting the region of intersection between an anthropometric data space and
a set of rules or criteria which define 'operability' in a workspace. The
non-linear multi-variate nature of this problem is demonstrated through computer
simulation fitting trials of subjects in a number of cockpit-like geometries.
The computations make use of a simple sagittal plane manikin to represent the
human skeletal form."**

**There are 23
references. **

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