Studies were performed to evaluate possible ways of improving the primary weaknesses in existing Army helicopter windshields, namely, scratching and spalling. Three experimental windshield material configurations offering a potential solution were fabricated for test and evaluation. The spall problem was approached by using plycarbonate as a backup material and was incorporated into each design. The scratch problem was approached by employing either (1) a hard surface coating, (2) an acrylic cladding, or (3) a thin glass cladding to the polycarbonate backup material. Commercially available materials and abrasion-resistant coatings were evaluated utilizing a windshield wiper apparatus, while spall performance was studied by ballistic testing and high-speed photography of each of three test configurations. /NTIS/

  • Supplemental Notes:
    • Presented at Proceedings of Conference on Transporent Aircraft Enclosures, Las Vegas, Nev., 5-8 Feb. 1973. See also report dated June 73, AD-769 344.
  • Corporate Authors:

    Army Materials and Mechanics Research Center

    Watertown, MA  United States  02172
  • Authors:
    • Plumer, J R
  • Publication Date: 1974-8

Media Info

  • Pagination: 22 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00082922
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: AMMRC-TR-74-19 Final Rpt.
  • Files: TRIS
  • Created Date: Mar 26 1976 12:00AM