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Design and Pilot Evaluation of the RAH-66 Comanche Selectable Control ModesThe RAH-66 Comanche helicopter has been designed to possess superior handling qualities over a wide range of flight conditions. The control laws have been tailored to satisfy the requirements of ADS-33C and the Weapon System Specification (WSS). This paper addresses the design of the Comanche Selectable Mode control laws (Velocity Stabilization/Hover Hold and Altitude Hold), which provide the additional stabilization and control augmentation needed when flying in a Degraded Visual Environment (DVE). An overview of the RAH-66 control laws is presented, including a detailed description of the Selectable Modes design. The primary focus of this paper is the results of piloted evaluation of these control laws in the Boeing motionbase simulator. These tests substantiate the detailed design of the Comanche Selectable Mode control laws. All tested DVE tasks (ADS-33C, sections 4.4 and 4.5) were rated Level 1. Other evaluation tasks confirmed the mission suitability of the control system. These control laws are ready for formal ADS-33C compliance testing in the Sikorsky Full Mission Simulator (FMS).
Document ID
19940008849
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Phillip J Gold (United Technologies (United States) East Hartford, Connecticut, United States)
James B Dryfoos (Boeing (United States) Chicago, Illinois, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Piloting Vertical Flight Aircraft: A Conference on Flying Qualities and Human Factors
Publisher: National Aeronautics and Space Administration
Subject Category
Aircraft Stability And Control
Report/Patent Number
NASA-CP-3220
Meeting Information
Meeting: Piloting Vertical Flight Aircraft: A Conference on Flying Qualities and Human Factors
Location: San Francisco, CA
Country: US
Start Date: January 20, 1993
End Date: January 22, 1993
Sponsors: American Helicopter Society, Ames Research Center
Accession Number
94N13322
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.

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IDRelationTitle19940008821Collected WorksPiloting Vertical Flight Aircraft: A Conference on Flying Qualities and Human Factors
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