Accession Number : AD0831091

Title :   DIRECT LIFT CONTROL FOR THE LAMS B-52.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Nelsen, Gary L. ; Lorenzetti, Robert C.

Report Date : JUN 1968

Pagination or Media Count : 293

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. (Author)

Descriptors :   *FLIGHT CONTROL SYSTEMS), (*JET BOMBERS, LIFT, ELECTRIC WIRE, CLIMBING, OPTIMIZATION, SPOILERS, AILERONS, ELEVATORS, PITCH(MOTION), FEEDBACK, ACCELERATION, AIRSPEED, APPROACH, AIRCRAFT LANDINGS, REFUELING IN FLIGHT, TERRAIN AVOIDANCE, ANALOG COMPUTERS, THESES.

Subject Categories : Bombers
      Flight Control and Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE