Limitations of the CH-47 Helicopter in Performing Terrain Flying with External Loads
Abstract
Quantitative limitations of the CH-47 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 pilot induced oscillations in night/instrument meteorological conditions were identified as the prime source of these limitations. Masking considerations were determined for various external load configurations, including an 8x8x20-foot MILVAN and a 155mm howitzer. Incorporation of load stabilization (AAELSS), coupled with a shortened sling suspension or a Self-Hoisting Cargo Interface Device, offers the best potential for alleviating the limits identified, while providing improved masking requirements and reductions 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1977
- Accession Number
- ADA048580
Entities
People
- Irvin B. Alansky
- James M. Davis
- Theodore S. Garnett Jr.
Organizations
- Boeing Rotorcraft Systems