Chapter 14. Anthropometry and Biomechanics - FAA
Chapter 14. Anthropometry and Biomechanics - FAA
Chapter 14. Anthropometry and Biomechanics - FAA
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HFDS 2003 (amended Oct 2009)<strong>Chapter</strong> 14 <strong>Anthropometry</strong> <strong>and</strong> biomechanics<strong>14.</strong>1.5 Use of distribution <strong>and</strong> correlation dataComplex uses of statistical data concerning human physicaldimensions or capabilities are introduced in this section. Data<strong>and</strong> distribution information on a single physical characteristic<strong>and</strong> its measures provides no information about thatcharacteristic's composite relationship with any othercharacteristic <strong>and</strong> its measures. For design, the relationshipbetween two or more characteristics <strong>and</strong> how their measures varytogether is important. Consider sizing clothing <strong>and</strong> designingseats. Bivariate distributions <strong>and</strong> correlation statistics can beused by knowledgeable professionals to determine designcriteria. <strong>14.</strong>1.5.1 Gaussian distribution of measurement values on asingle human physical characteristic. The relationshipbetween the Gaussian distribution <strong>and</strong> the measurement valueequivalent to the desired percentile statistic value should best bedetermined from a smoothed frequency distribution or from theformula presented in Exhibit <strong>14.</strong>1.5.1 if the following conditionsare met:a. the percentile value is not given in applicable Humanmachine-interfacedata, <strong>and</strong>b. the population distribution for the applicable humanphysical characteristic is known to be Gaussian (normal)<strong>and</strong> the mean <strong>and</strong> variance are known. [Source: Israelski,1977]Exhibit <strong>14.</strong>1.5.1 Percentile values14-11
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