Limitations of the UTTAS Helicopter in Performing Terrain Flying with External Loads.
Abstract
Quantitative limitations of the UTTAS helicopter performing terrain flying with external loads have been developed using a fully coupled total force and moment simulation math model of the helicopter and external load. Load sway motion and susceptibility to PIO in night/instrument meteorological conditions were identified as the prime source of these limitations. Masking requirements were determined for various external load configurations including a 105mm howitzer and an A-22 ammo bag. Incorporation of a dual hook suspension or load stabilization coupled with a shortened sling suspension offers the best potential for alleviating the limits identified, while providing improved masking requirements and reduction in pilot workload. In addition, the levels of maneuverability possible with the present state-of-the-art visionic systems (including FLIR and NVG, were defined for terrain flying during night operations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1977
- Accession Number
- ADA047568
Entities
People
- Irvin B. Alansky
- James M. Davis
- Theodore S. Garnett Jr.
Organizations
- Boeing Rotorcraft Systems