Relationships between Fourier and spectral analyses
Feasibility of using Fourier transforms in expressions of cross spectral density and power spectral density in spectral human response analyses
Taylor, L. W., Jr.↗
SEARCH · Engineering Papers
Results for “Human response”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Judgment tests of aircraft noise
Psychological tests of human responses to aircraft noise levels
Johnson, P. J.↗
Acceleration
Human responses to linear sustained and rotary acceleration, zero and reduced gravity environments, and impact in manned space flight
Craig, R. L.↗
Inter-observer agreement and models of monaural auditory processing in detection tasks Final report
Signal detection model for human response in monaural auditory processing
Wilcox, G. W.↗
Effects of materials degradation products on man
Human response to inhalation of degradation contaminants in spacecraft environment
Jaffe, R. J.↗
Medical experience in the Apollo manned space flights 7 to 11
Human response in Apollo flights emphasizing astronauts food, water, waste management, physical examination, preventive medicine problems, etc
Berry, C. A.↗
Human perception of angular acceleration and implications in motion simulation
Human response to angular acceleration, discussing implications for motion capability in flight simulator
Stewart, J. D.↗
Summary of medical experience in the Apollo 7 through 11 manned spaceflights
Human response in Apollo flights emphasizing astronauts food, water, waste management, physical examination, preventive medicine problems, etc
Berry, C. A.↗
A summary of the medical experience in the Apollo program
Apollo program medical data contribution to knowledge of human response to space environment
C A Berry↗
Human perception of angular acceleration and implications in motion simulation
Human response to and perception of angular acceleration, discussing implications for motion capability in flight simulator
Stewart, J. D.↗
Breathing-metabolic simulator
Breathing-metabolic simulator was developed to be used for evaluation of life support equipment. Apparatus simulates human breathing rate and controls temperature and humidity of exhaled air as well as its chemical composition. All functions are designed to correspond to various degrees of human response.
Bartlett, R. G.↗
Speed in Information Processing with a Computer Driven Visual Display in a Real-time Digital Simulation
Information transfer between the operator and computer-generated display systems is an area where the human factors engineer discovers little useful design data relating human performance to system effectiveness. This study utilized a computer-driven, cathode-ray-tube graphic display to quantify human response speed in a sequential information processing task. The performance criteria was response time to sixteen cell elements of a square matrix display. A stimulus signal instruction specified selected cell locations by both row and column identification. An equal probable number code, from one to four, was assigned at random to the sixteen cells of the matrix and correspondingly required one of four, matched keyed-response alternatives. The display format corresponded to a sequence of diagnostic system maintenance events, that enable the operator to verify prime system status, engage backup redundancy for failed subsystem components, and exercise alternate decision-making judgements. The experimental task bypassed the skilled decision-making element and computer processing time, in order to determine a lower bound on the basic response speed for given stimulus/response hardware arrangement.
Kyle, R. G.↗
STOL ride quality criteria - Passenger acceptance.
The ability to mathematically model human reaction to variables involved in transportation systems offers a very desirable tool both for the prediction of passenger acceptance of proposed systems, and for establishing acceptance criteria for the system designer. As a first step in the development of a general model for STOL systems, a mathematical formulation is presented which accepts as inputs nine variables felt to be important in flight under STOL-type conditions and presents an index of human response as the output. The variables used are three linear motions, three angular motions, pressure, temperature and noise level. The results are used to establish specifications for stability augmentation systems to improve the ride quality of existing STOL aircraft.
Jacobson, I. D.↗
NASA ride quality program at the Flight Research Center
A flight test program to determine the effects of low frequency vibrations on passengers in short haul aircraft is discussed. The objective of the program is to accumulate flight test data on aircraft ride quality in terms of vehicle motion and acceleration and human responses. The subjects discussed are: (1) test procedures, (2) data processing, and (3) the program schedule.
Gee, S. W.↗
Human operator dynamics for aural compensatory tracking
The human operator's ability to control using aural information only and using combined aural and visual displays was investigated for a simple tracking task. Tracking error was presented to the test subjects using one- and two-ear displays. For both displays the pitch of the tone represented the magnitude of the tracking error. The operator's aural control characteristics were modeled as a describing function plus a remnant. The effects on the measured describing function and remnant of different system dynamics, changes in the frequency content of the input and different displays were determined during the study. The describing function and remnant data indicate that humans can control as well with aural cues as with visual cues for the task considered. However, the reduction in operator time delays, expected because of the generally faster human response to aural stimuli, was not evident in the results. It was also determined that the operators could control equally well with either the one- or two-ear display.
Vinje, E. W.↗
Simulators' validation study: Problem solution logic
A study was conducted to validate the ground based simulators used for aircraft environment in ride-quality research. The logic to the approach for solving this problem is developed. The overall problem solution flow chart is presented. The factors which could influence the human response to the environment on board the aircraft are analyzed. The mathematical models used in the study are explained. The steps which were followed in conducting the validation tests are outlined.
Schoultz, M. B.↗
Static-kinetic reactions of man under conditions of brief weightlessness
Physical characteristics of human responses to weightlessness simulation during parabolic flights establish body immobilization and visual illusions as the most manifest causes of sensory distrubances. Repeated brief weightlessness exposures gradually decreased expressions of static-kinetic disorders.
Kolosov, I. A.↗
Integration of visual and motion cues for simulator requirements and ride quality investigation
Preliminary tests and evaluation are presented of pilot performance during landing (flight paths) using computer generated images (video tapes). Psychophysiological factors affecting pilot visual perception were measured. A turning flight maneuver (pitch and roll) was specifically studied using a training device, and the scaling laws involved were determined. Also presented are medical studies (abstracts) on human response to gravity variations without visual cues, acceleration stimuli effects on the semicircular canals, and neurons affecting eye movements, and vestibular tests.
Young, L. R.↗