Evaluation of Anthropomorphic Test Device Apparel for Aircraft Certification

Details

• Creators:
  Hellstrom, Ian T ; Moorcroft, David M ; Carroll, William H
• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration ; United States. Federal Aviation Administration. Aircraft Certification Service
• Subject/TRT Terms:
  Acceleration (Mechanics) Aircraft Anthropomorphic Test Device Apron Aviation Safety Certification Testing Clothing Footwear Friction Impact Tests Load Factor Materials Occupant Kinetics Photometry Physical Anatomy Restraint Systems Seats

  More +
• Publication/ Report Number:
  DOT/FAA/AM-25/11
• DOI:
  https://doi.org/10.21949/1529686
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Contracting Officer:
  Pellettiere, Joseph
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. Office of Aviation. Civil Aerospace Medical Institute
• Abstract:
  As part of a larger project aimed at gaining a better understanding of factors that affect the quality of test results using anthropomorphic test devices (ATDs), the Federal Aviation Administration (FAA) researched the effects of ATD apparel in dynamic tests. Current standards are limited to 100% cotton form fitting clothing and footwear with a 1.5-inch heel height and a combined weight of 2.5 pounds for the pair. For this project, three different types of clothing were tested: 60% cotton/40% polyester, 92% polyester/8% spandex and 100% cotton (the current standard). Additionally, four types of footwear were tested: bowling shoe, boots, sneaker, and a military specification shoe (standard). The FAA requires two certification tests to certify aircraft seating. The first test is a longitudinal impact with a minimum change in velocity of 44 ft/sec and peak acceleration of 16 g. The second test consists of a combined longitudinal-vertical impact with a minimum impact velocity of 35 ft/sec, peak acceleration of 14 g, and an impact angle of 30° off vertical. For this report, twenty-one longitudinal tests were run to measure the effects of clothing and footwear. Three additional longitudinal tests were conducted to evaluate the use of a protective barrier across the lap to mitigate damage to the ATD from the belt. Six vertical tests were conducted to evaluate the effect of the footwear in that test configuration. ATD response and seating system loads were analyzed to determine the effects of different combinations of clothing and footwear. Only minor differences were seen between the four different footwear for both longitudinal and vertical testing. The alternative clothing had little impact of peak head excursion but produced higher seat-pan loads. Thus, use of the alternate apparel could be considered a worse-case scenario. Only one of three apron tests achieved leg flail, therefore a definitive conclusion cannot be made on the impact an apron has on testing.
• Format:
  PDF
• Collection(s):
  FAA Civil Aerospace Medical Institute
• Main Document Checksum:
  urn:sha-512:f425637bf94601f7dbf46243cec481770c0e435233df1dfb601d51dd270ab04a9f6b54c59b710dc52f338462cd206c91e00a42172344d9336d5423f17f5bb7d0
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86561/dot_86561_DS1.pdf
• File Type:
  [PDF - 3.51 MB ]