Accession Number : ADA233349


Title :   The Airbag as a Supplement to Standard Restraint Systems in the AH-1 and AH-64 Attack Helicopters and Its Role in Reducing Head Strikes of the Copilot/ Gunner. Volume 1


Descriptive Note : Final rept.


Corporate Author : ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL


Personal Author(s) : Alem, Nabih M ; Shanahan, Dennis F ; Barson, John V ; Muzzy, III, William H


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a233349.pdf


Report Date : Jan 1991


Pagination or Media Count : 51


Abstract : Accident investigation records of U.S. Army helicopter crashes show injuries of pilots due to striking a structure inside the cockpit outnumber those due to excessive accelerations by a five-to-one ratio. This two-volume reports presents the results of a study of the effectiveness of airbags in reducing the severity of contact injury to the gunner when striking the gunsight. Airbag systems were installed on the gunsights in simulated Cobra and Apache cockpits, then sled tested at 7 and 25 g. The tests indicated airbags reduced head accelerations by 65%, head injury criteria by 77%, and head angular acceleration by 76% in the Cobra tests. In the Apache tests, the airbags reduced those same indicators by 68, 52, and 83%. An airbag system, the report concludes, Volume 1 of the report describes the tests and discusses the results. Volume 2 consists of Appendixes A, B, C of the report and contains processed signal graphs of all sled tests. Volume II is available upon request from SIC, USAARL.


Descriptors :   *HELICOPTERS , ACCIDENT INVESTIGATIONS , COCKPITS , ACCELERATION , GRAPHS , PILOTS , SIGNALS , RESTRAINT , WOUNDS AND INJURIES , RECORDS , HEAD(ANATOMY) , GUNNERS , ARMY AIRCRAFT , ANGULAR ACCELERATION , CRASHES , GUN SIGHTS , SLED TESTS , TEST AND EVALUATION , SIMULATION


Subject Categories : Aircraft
      Marine Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE