Accession Number:

ADA058016

Title:

An Evaluation of Perceptual-Motor Workload during a Helicopter Hover Maneuver.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER ALA

Report Date:

1978-05-01

Pagination or Media Count:

21.0

Abstract:

Stability augmentation systems are purported to reduce pilot workload during hover, nap-of-the-earth, and IFR maneuvers. The current research project examines a method of aiding the MEDEVAC pilot in performing a hover maneuver while perhaps reducing workload. A modular, four-axes stability augmentation system Ministab with integrated rate attitude and heading retention was installed on the USAARL JUH-1H helicopter. Participating personnel for the project were nine US Army aviators with a total average of 1172 flight hours. The aviators hovered at 30 feet above ground level for five minutes under each of the three following flight control conditions Unaided-normal hover with visual flight rules conditions, using Force Trim, and using the Ministab. Continuous information from twenty pilot and aircraft monitoring points was recorded on an incremental digital recorder for all flights. Multivariate analyses were performed on both aircraft status variables and control input workloadactivity measures. Under the conditions tested, the stability augmentation system evaluated did not provide a clearcut improvement in flight performance and workload across all flight parameters. Author

Subject Categories:

  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE