Dynamic and Crashworthy Evaluation of the UH-1B, C, D, H, Medical Attendant's Seat
Abstract
The challenge was to evaluate the crashworthiness of the UH-1 Medical Attendant's Seat and investigate the feasibility of modifications to improve the seat and its restraint system. This report is a record of USAARL's involvement, from researching the background to achieve a proper direction for study, through accident statistics, stress analysis, dynamic test program, reduction of data, interpretation conclusion and finally feasible recommendations. The seat was found to be completely noncrashworthy and a direct contributor of serious injuries to its occupants mostly to the upper torso and head because of poor occupant restraint. Its construction and manufacture did not meet all of the design criteria of military seat specifications. The dynamic tests of the seat demonstrated that with the addition of an inertia reel, shoulder harness, and attachment of the lap belt to the floor a seat occupant could be satisfactorily restrained despite serious seat failure during a crash. The proposed modifications in kit form will provide the seat's occupant with the greatest increase in safety and retention, should crash occur, for the lowest dollar investment and 'down time' required for its installation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1972
- Accession Number
- AD0737197
Entities
People
- Errol B. Barber
- Felix T. Aguilar
- G. E. Tornquist
- S. P. Desjardins
- Stanley C. Knapp
Organizations
- United States Army Aeromedical Research Lab