Accession Number : ADA186934

Title :   Comparison of Alphanumeric Data Entry Methods for Advanced Helicopter Cockpits.

Descriptive Note : Final rept.,

Corporate Author : HUMAN ENGINEERING LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Malkin, Frank J ; Christ, Kathleen A

PDF Url : ADA186934

Report Date : Sep 1987

Pagination or Media Count : 51

Abstract : In this study, three methods of data entry were compared for entering navigation coordinate sets: a) connected-word voice recognition, b) keyboard, and c) thumb-controlled switch. The subjects, 12 active Army aviators, entered the data as a sole task and also while flying a helicopter simulator equipped with a computer-generated, external scene. The different data entry methods were compared for time to enter the data, for errors, and for the effect on flight performance. Results showed that the keyboard was faster and resulted in fewer errors than the other two data entry methods. The time to enter data by voice was increased by the high nonrecognition rate (12 percent) and the error correction procedure. An overall 81 percent recognition accuracy rate was achieved in this study, with individual rates varying from 58 percent to 99 percent. Based on a subjective questionnaire, the majority of subjects still preferred to enter data by voice. Keywords: Controls and displays; Speech recognition; Pilot workload, Human factors; Helicopter.

Descriptors :   *ALPHANUMERIC DATA, *COCKPITS, *DATA PROCESSING, *HELICOPTERS, *INPUT, *MAN MACHINE SYSTEMS, ACCURACY, COORDINATES, CORRECTIONS, ERRORS, EXTERNAL, FLIGHT, HUMAN FACTORS ENGINEERING, NAVIGATIONAL AIDS, PILOTS, QUESTIONNAIRES, RATES, RECOGNITION, SIMULATORS, SPEECH RECOGNITION, VOICE COMMUNICATIONS, WORD RECOGNITION, WORKLOAD, KEYBOARDS, CONTROL SYSTEMS, DISPLAY SYSTEMS, SWITCHES

Subject Categories : Helicopters
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE