IMPACT TEST METHODS FOR HELMETS. SUPPLEMENT I TO HELMET DESIGN CRITERIA FOR IMPROVED CRASH SURVIVAL Open PDF Document Details Document Type Technical Report Publication Date Jan 01, 1966 Accession Number AD0628679 Entities People J. W. Turnbow Tags Communities of Interest Engineered Resilient Systems DTIC Thesaurus Topics Army Aviation Assembly Aviation Safety Center Of Gravity Coefficients Design Criteria Drop Tests Government Procurement Governments Impact Tests Materials Measurement Safety Engineering Simulations Test And Evaluation Test Facilities Test Methods