A Comparison of Predicted and Experimentally Determined Longitudinal Dynamic Responses of a Stabilized Airplane
Abstract
The dynamic longitudinal stability of an airplane with autopilot was predicted by combining the transfer functions of the autopilot obtained from tests made on the ground with those of the airplane measured in flight to obtain the open-and closed-loop frequency responses and transient responses for the combination. These predicted responses were then compared with measured flight frequency and transient responses for three airspeeds and Various autopilot settings of displacement and rate of displacement feedback. The analysis procedures were based upon linear methods and agreement was good when elements were operated in flight within the linear range except for certain conditions in which rate of displacement feedback was used.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1951
- Accession Number
- ADA380452
Entities
People
- Louis H. Smaus
- Marvin R. Gore
- Merle G. Waugh
Organizations
- National Aeronautics and Space Administration