Accession Number:

ADP005780

Title:

Low-Speed Longitudinal Flying Qualities of Modern Transport Aircraft,

Descriptive Note:

Corporate Author:

ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)

Personal Author(s):

Report Date:

1988-05-01

Pagination or Media Count:

16.0

Abstract:

The suitability of an aircraft with respect to human control is determined by its so-called handling qualities. In modern transport aircraft the handling qualities are determined to a high degree by the flight control system. An introduction to the following aspects of closed-loop flight control systems for modern transport aircraft is given stabilization and manoeuvring functions, candidate implementation forms, mini-size manipulators for flight control, and mathematical representations of the airframeflight control system combination required for prediction and evaluation purposes. Regarding criteria for good handling qualities of transport aircraft the terminal flight phases take-off, initial climb, final approach and landing are of prime interest. A treatise on a number of promising quantitative criteria for transport aircraft equipped with advanced flight control systems is given. Two groups of criteria are distinguished criteria based on the dynamic characteristics of the aircraft alone six criteria and criteria based on the dynamic characteristics of the pilotaircraft closed-loop system two criteria. In the latter case a quasi-linear describing function for the human controller behaviour is used. SDW

Subject Categories:

  • Flight Control and Instrumentation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE