Accession Number:

ADA099196

Title:

A Systems Engineering Evaluation Method for Piloted Aircraft and Other Man-Operated Vehicles and Machines with Hypothetical Example of a Systems Evaluation and Quantified System Performance-Workload Rating Scales

Descriptive Note:

Final rept.

Corporate Author:

FEDERAL AVIATION ADMINISTRATION WASHINGTON DC SYSTEMS RESEARCH AND DEVELOPMENT SERVICE

Personal Author(s):

Report Date:

1981-03-01

Pagination or Media Count:

59.0

Abstract:

A system evaluation method is presented which systematizes and quantifies both PRP pilot rating procedures and ECP engineering calculation procedure measures of system performance on a logarithmic ratio basis of test aircraft configurations compared to a known selected standard aircraft vehicle configuration. The logarithmic units 10 log ECP testECP std and 10 log PRP testPRP std used in this system evaluation method are termed decivals dV as they are 10 times the log base 10 of the ratio of the ECP and PRP values obtained during tests for the test aircraft configuration compared to the chosen standard aircraft configuration. The system evaluation is for chosen time periods of selected flight operations which are critical to flight safety, such as may occur during takeoff, or approach to landing and may include emergency engine failure, flight control or instrument malfunction conditions. System equations are presented which answer the question as to how good is the test configuration in relation to the known standard configuration during these same flight conditions. Potential ECP measures are discussed and their correlation with PRP pilot ratings obtained during flight test or flight simulator test determines their retention as effective system performance and evaluation measures. The non-dimensional logarithmic nature of the retained ECP system performance descriptors allows their combination by logarithmic summation and their correlation with the PRP pilot ratings is determined. The combination of ECP measures having the highest correlation with pilot ratings is retained for final system evaluation.

Subject Categories:

  • Personnel Management and Labor Relations

Distribution Statement:

APPROVED FOR PUBLIC RELEASE