Accession Number : AD0775699

Title :   Precision and Unburdening Study.

Descriptive Note : Final rept.,


Personal Author(s) : Carmack,Donald L.

Report Date : DEC 1973

Pagination or Media Count : 33

Abstract : The study was conducted to investigate pilot task allocations in conjunction with Automatic Flight Control Systems (AFCS) failure modes to identify crew procedures that provide greatest potential for performance and produce effective pilot unburdening. A series of six precision instrument approach sequences were flown to landings and go-arounds. The sequences contained twenty-five combinations of control conditions and crew procedures for the pilots to determine which combinations provided the greatest precision with the least burdening. During normal AFCS operation, the subject pilots agreed that the pilot should be assigned systems monitor and visual transition tasks and the copilot should be assigned the flight path monitor task. The copilot being 'heads-down', should be responsible for go-around execution. All pilots agreed that Force Wheel Steering was desirable for control inputs on final. All pilots felt that the task which allocated control of pitch, bank, power, and communications to one pilot during both manual and semiautomatic approaches was unacceptable. They unanimously expressed a desire for shared control when complete uncoupling or AFCS failure occurred. (Modified author abstract)

Descriptors :   *Pilots, *Job analysis, *Automatic pilots, Control systems, Man machine systems, Failure, Performance(Human), Instrument flight

Subject Categories : Personnel Management and Labor Relations

Distribution Statement : APPROVED FOR PUBLIC RELEASE