scholarly journals Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
José Ricardo Silva Scarpari ◽  
Mauricio Watanabe Ribeiro ◽  
Camila Sardeto Deolindo ◽  
Maria Adelia Albano Aratanha ◽  
Donizeti de Andrade ◽  
...  
Keyword(s):  
Electrodermal Activity ◽  
Flight Test ◽  
Physiological Parameters ◽  
Cognitive Workload ◽  
Subjective Responses ◽  
Handling Qualities ◽  
Flight Controls ◽  
High Workload ◽  
Engine Failure ◽  
Physiological Reactions

AbstractThe procedures to be performed after sudden engine failure of a single-engine helicopter impose high workload on pilots. The maneuver to regain aircraft control and safe landing is called autorotation. The safety limits to conduct this maneuver are based on the aircraft height versus speed diagram, which is also known as "Dead Man’s Curve”. Flight-test pilots often use subjective methods to assess the difficulty to conduct maneuvers in the vicinity of this curve. We carried out an extensive flight test campaign to verify the feasibility of establishing quantitative physiological parameters to better assess the workload endured by pilots undergoing those piloting conditions. Eleven pilots were fully instrumented with sensors and had their physiological reactions collected during autorotation maneuvers. Our analyses suggested that physiological measurements (heart rate and electrodermal activity) can be successfully recorded and useful to capture the most effort-demanding effects during the maneuvers. Additionally, the helicopter’s flight controls displacements were also recorded, as well as the pilots’ subjective responses evaluated by the Handling Qualities Rate scale. Our results revealed that the degree of cognitive workload was associated with the helicopter’s flight profile concerning the Height-Speed diagram and that the strain intensity showed a correlation with measurable physiological responses. Recording flight controls displacement and quantifying the pilot's subjective responses show themselves as natural effective candidates to evaluate the intensity of cognitive workload in such maneuvers.

A Design of a Monitoring Expert System of Flight Parameter

2013 ◽  
Vol 791-793 ◽  
pp. 874-877
Author(s):  
Yan Song Zhang ◽  
Hui Feng Zhang ◽  
Wei Ye ◽  
Chao Jiang Wang ◽  
Zhen Dong Xu
Keyword(s):  
Expert System ◽  
Real Time ◽  
Flight Test ◽  
Information Control ◽  
Digital Information ◽  
Video Information ◽  
Test Technology ◽  
Flight Controls ◽  
Flight Parameters ◽  
Special Circumstances

In order to meet the trend for flight test technology, this paper presents a monitoring expert system of flight parameters based on embedded technology , which can achieve real-time interpretation of flight data air and provide the parameters for the AHRS, engines, flight controls for aircraft crew members as well as the disposal of the special circumstances operating. It can be used for real-time collection and record a variety of digital information, control information and video information transmitting by the missiles and fiber during the fly testing process.

Evaluating control activity as a measure of workload in flight test

2005 ◽  
Vol 49 (1) ◽  
pp. 64-67
Author(s):  
S. Jennings ◽  
G. Craig ◽  
Stephan Carignan ◽  
Kris Ellis ◽  
D. Thorndycraft Qinetiq
Keyword(s):  
Flight Test ◽  
Measurement Tool ◽  
Control Activity ◽  
Handling Qualities ◽  
Subjective Workload ◽  
Workload Measurement ◽  
Dynamic Interface ◽  
Interface Modeling ◽  
Short Test ◽  
Cyclic Control

This paper describes an investigation of a workload measurement technique based on pilot control movements. The Dynamic Interface Modeling and Simulation System Product Metric (DIMSS PM) assumes that pilot control activity can be used to evaluate pilot workload. Three qualified test pilots flew the fly-bywire NRC Bell 205 helicopter in a short test program that compared the DIMSS PM with subjective workload ratings and handling qualities ratings. The pilots performed a variation of an ADS-33E bob-up with varying levels of simulated turbulence and modified cyclic control characteristics. Good agreement was found for most in-flight test conditions between DIMSS Workload Metric scores and subjective workload ratings from the Bedford Workload Scale and Cooper-Harper handling qualities ratings. While, the DIMSS Workload Metric did not accurately reflect workload increases due to variations in the cyclic stick characteristics, the metric shows promise as an objective measurement tool of pilot workload in well-defined tests.

scholarly journals PASS: A Multimodal Database of Physical Activity and Stress for Mobile Passive Body/ Brain-Computer Interface Research

2020 ◽  
Vol 14 ◽  
Author(s):  
Mark Parent ◽  
Isabela Albuquerque ◽  
Abhishek Tiwari ◽  
Raymundo Cassani ◽  
Jean-François Gagnon ◽  
...  
Keyword(s):  
Physical Activity ◽  
Electrodermal Activity ◽  
Activity Levels ◽  
Subjective Ratings ◽  
Stress Monitoring ◽  
Experimental Protocol ◽  
Computer Interfaces ◽  
Movement Artifacts ◽  
Physiological Reactions ◽  
Significant Attention

With the burgeoning of wearable devices and passive body/brain-computer interfaces (B/BCIs), automated stress monitoring in everyday settings has gained significant attention recently, with applications ranging from serious games to clinical monitoring. With mobile users, however, challenges arise due to other overlapping (and potentially confounding) physiological responses (e.g., due to physical activity) that may mask the effects of stress, as well as movement artifacts that can be introduced in the measured signals. For example, the classical increase in heart rate can no longer be attributed solely to stress and could be caused by the activity itself. This makes the development of mobile passive B/BCIs challenging. In this paper, we introduce PASS, a multimodal database of Physical Activity and StresS collected from 48 participants. Participants performed tasks of varying stress levels at three different activity levels and provided quantitative ratings of their perceived stress and fatigue levels. To manipulate stress, two video games (i.e., a calm exploration game and a survival game) were used. Peripheral physical activity (electrocardiography, electrodermal activity, breathing, skin temperature) as well as cerebral activity (electroencephalography) were measured throughout the experiment. A complete description of the experimental protocol is provided and preliminary analyses are performed to investigate the physiological reactions to stress in the presence of physical activity. The PASS database, including raw data and subjective ratings has been made available to the research community at http://musaelab.ca/pass-database/. It is hoped that this database will help advance mobile passive B/BCIs for use in everyday settings.

Argus, a System for Varying Cognitive Workload

1998 ◽  
Vol 42 (16) ◽  
pp. 1147-1147 ◽  
Author(s):  
Michael J Schoelles ◽  
Wayne D. Gray
Keyword(s):  
Team Performance ◽  
Decision Aids ◽  
Single Subject ◽  
Decision Task ◽  
Cognitive Workload ◽  
Team Members ◽  
High Workload ◽  
Support Team ◽  
Multiple Display ◽  
Support Research

Argus is a system developed to support research to understand and measure cognitive workload. It consists of a single-subject and a team version. Research with the single-subject version is concerned with cognitive workload from a dynamic micro-strategy perspective; the team version seeks to identify communication protocols and decision aids that support team performance under high workload conditions. Workload is varied by the experimenter through a set of authoring tools. In the single-subject version, multiple tasks, a decision task and/or a tracking task, multiple display interfaces and input modes further enhance the variability of task workload. In the team version, communication between team members is accomplished through text and data messages sent between workstations.

Business Jet Fly-by-Wire Control Laws Handling Qualities Flight Test Assessment

2021 ◽  
pp. 1-19
Author(s):  
Tom Berger ◽  
Mark B. Tischler ◽  
Steven G. Hagerott ◽  
M. Christopher Cotting ◽  
James L. Gresham ◽  
...  
Keyword(s):  
Flight Test ◽  
Control Laws ◽  
Handling Qualities ◽  
Business Jet ◽  
Test Assessment

Gender Differences in Psychophysiological Responses to Disgust

2008 ◽  
Vol 22 (2) ◽  
pp. 65-75 ◽  
Author(s):  
Sonja Rohrmann ◽  
Henrik Hopp ◽  
Markus Quirin
Keyword(s):  
Gender Stereotypes ◽  
Electrodermal Activity ◽  
Skin Conductance Level ◽  
Immunoglobulin A ◽  
Subjective Responses ◽  
Film Clips ◽  
Males And Females ◽  
Open Question ◽  
Secretory Immunoglobulin ◽  
Conductance Level

Several studies have revealed that women report stronger feelings of disgust than men ( Gross & Levenson, 1995 ; Schienle, Schäfer, Stark, Walter, & Vaitl, 2005 ). However, the extent to which this gender difference also influences physiological disgust responses remains an open question. In Experiment 1, 54 female and 41 male participants were exposed to slides of different disgust-content. In Experiment 2, 47 women and 53 men watched two film clips showing hygiene-related or food-related disgust stimuli, respectively. Differences between males and females in reported and physiological disgust responses (heart rate, electrodermal activity, salivary cortisol, secretory immunoglobulin A) were tested by analysis of variance. Replicating previous studies, women reported stronger feelings of disgust than men across all disgust inductions. Additionally, in Study 1, women showed a higher increase in skin conductance level than men. In conclusion, gender moderates subjective responses to disgust, whereas physiological disgust responses are only marginally moderated by gender. Gender stereotypes as an explanation for the results are discussed.

QUANTIFYING THE ACCUMULATED STRESS LEVEL USING A POINT-OF-CARE TEST DEVICE

2014 ◽  
Vol 26 (05) ◽  
pp. 1450053 ◽  
Author(s):  
Chi-Chun Chen ◽  
Shih-Chi Lin ◽  
Ming-Shing Young ◽  
Chin-Lung Yang
Keyword(s):  
Heart Rate ◽  
Fuzzy Logic ◽  
Stress Level ◽  
Rating Scale ◽  
Mental Arithmetic ◽  
Electrodermal Activity ◽  
Point Of Care ◽  
Skin Conductance Level ◽  
Physiological Parameters ◽  
Effective Response

This study developed a portable embedded multi-sensor fusion for point-of-care health monitoring to evaluate the accumulated stress levels of affected people. The instrument integrates numerous physiological parameters to quantify the level of accumulated stress, which is one of the leading causes of cardiovascular disease. The participants in this study were assigned daily mental arithmetic tasks over one week to simulate stress-accumulation conditions. Fuzzy logic rules were defined to quantify the accumulated stress level by combining electrodermal activity (EDA) and electrocardiograph (ECG) and photoplethysmograph (PPG) signals. The trends of 21 physiological parameters were analyzed and compared, from which the following four physiological parameters were identified as being representative of the effective response to cumulative stress: (1) the heart rate, (2) the ratio of low- to high-frequency powers for heart rate variability (HRV), (3) the skin conductance level (SCL) and (4) the liver harmonic proportion (i.e. the first harmonic of the peripheral blood volume pulse spectrum). Subsequently, the observed trends of these four parameters were combined to enhance the robustness and the reliability of the proposed system by adjusting the applied fuzzy logic rules. The experimental results show an 82% correlation between the measured level of accumulated stress and the social readjustment rating scale (SRRS) obtained from subject-independent testing.

Flight Testing the ADS-33E Cargo Helicopter Handling Qualities Requirements Using a CH-53G

2013 ◽  
Vol 58 (1) ◽  
pp. 1-11
Author(s):  
Marc Hoefinger ◽  
Chris L. Blanken
Keyword(s):  
Flight Test ◽  
Flight Testing ◽  
Flight Tests ◽  
Handling Qualities ◽  
Design Standard ◽  
German Army ◽  
The U.S

Flight tests with a German Army Sikorsky CH-53G helicopter were performed to evaluate the applicability and repeatability of the U.S. Army's Aeronautical Design Standard (ADS)-33E-PRF cargo helicopter handling qualities requirements. The objectives were to corroborate earlier findings and to propose modifications if deemed necessary. The CH-53G was chosen because it is the largest helicopter operated by the German Army, and its dedicated role is cargo and troop transport. The quantitative criteria and the associated boundaries as specified in the standard were largely confirmed. Several flight test maneuvers were revised and tailored. Generally, the heights for performing the near-earth maneuvers were increased. The time/tolerances experienced were borderline desired/adequate or adequate.

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