Feasibility of Reducing Incidence of Low Back Pain in Helicopter Pilots Using Improved Crewseat Cushions
Abstract
This effort included a literature search to review the most current research related to seating and back pain. A pilot survey was also conducted to obtain direct information on the occurrence of low back pain in Black Hawk helicopter pilots. The natural frequencies and durability properties of 18 cushion foam materials were experimentally determined; stiffness and density properties were measured. With the results from the literature search and pilot survey, and the information on foams, a number of concepts were developed for cushions that reduce the incidence of low back pain. Prototypes of four of these cushion concepts were fabricated: Cushion with nonadjustable lumbar support incorporated into back contour; cushion with mechanical lumbar support adjustment; cushion with inflatable lumbar support adjustment; and pivoting fiberglass seat pan and back contour with cushion. The pivoting fiberglass contour with cushion prototype did not provide a satisfactory combination of low back support and comfort, therefore, only the first three cushion prototypes were evaluated for short-term comfort. Low back pain, Helicopter seats, Crewseat cushions, Vibration, Crashworthiness.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1992
- Accession Number
- ADB178290
Entities
People
- Caroline Vaningen-dunn
- Marvin K. Richards
Organizations
- Armstrong Laboratory