Direct Lift Control for the Lams B-52
Abstract
A DLC (Direct Lift Control) system was designed for the LAMS B-52 test aircraft using optimization theory. Spoilers, symmetric ailerons, and elevator respond to normal longitudinal column movements, achieving incremental rates of climb up to 500 fpm from trim without pitching the aircraft. DLC reduces normal acceleration 50%, both in and out of turbulence, and improves airspeed control in precision maneuvering tasks: Approach and landing, in-flight refueling, and terrain following. The closed-loop DLC controller, consisting of fixed-gain normal acceleration, pitch angle, and pitch rate feedbacks to the three control surface servos, was demonstrated by a piloted six degree of freedom analog simulation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1968
- Accession Number
- AD0831091
Entities
People
- Gary L. Nelsen
- Robert C. Lorenzetti
Organizations
- Air Force Institute of Technology