Army Preliminary Evaluation of the AH-1G Tractor Tail Rotor Modification
Abstract
The Army Preliminary Evaluation of the tractor tail rotor modification on the AH-1G helicopter was conducted. This test was conducted to confirm the results of the feasibility tests with the proposed final configuration for this modification and also to evaluate both the performance in hover and level flight and the handling qualities throughout the flight envelope. This modification provides an increase in the usable in-ground-effect (IGE) operating envelope and improves the directional control characteristics while maneuvering. The test showed good agreement with the results of the earlier feasibility tests. The maximum safe IGE maneuvering envelope for the tractor tail rotor AH-1G was determined and defined by those conditions of gross weight and density altitude where a 10-percent directional control margin was available in the critical azimuth in a 15-knot wind. Using the same criteria for the standard AH-1G configuration, the difference due to the improved directional control with the tractor tail rotor is equivalent to an additional 1500 pounds payload at the same density altitude.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1969
- Accession Number
- AD0860943
Entities
People
- John I. Nagata
- Marvin W. Buss
Organizations
- Edwards Air Force Base