Accession Number:

AD0760763

Title:

Design of Fixed Gain Compensator System for the Longitudinal Axis of the C-141 Fly-by-Wire Aircraft.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

• Kwasigroh,Larry D.

Report Date:

1973-03-01

Pagination or Media Count:

167.0

Abstract:

The report presents an attempt to design a fixed gain control system for the longitudinal axis of the C-141 fly-by-wire aircraft. Classical control theory using root locus and frequency response Bode techniques was used throughout the design process. It was found that a quadratic over quadratic compensator, inserted in the forward path of the C control loop, improved the system response even with the original discrete gains. With slightly relaxed constraints on the C performance envelope was originally designed for fighter aircraft, a single fixed gain in the C loop produced acceptable C Category 3 responses. An additional quadratic over quadratic compensator was designed for the pitch attitude control loop however, the acceptability of the attitude response with a fixed gain is questionable. Modified author abstract

Descriptors:

• *JET TRANSPORT AIRCRAFT
• *FLIGHT CONTROL SYSTEMS
• FLIGHT PATHS
• PITCH(MOTION)
• ADAPTIVE CONTROL SYSTEMS
• GYRO STABILIZERS
• MATHEMATICAL MODELS
• THESES

Subject Categories:

• Transport Aircraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE