Capture of Satellites having Rotational Motion

1986 ◽  
Vol 30 (9) ◽  
pp. 875-879 ◽  
Author(s):  
Craig S. Hartley ◽  
David J. Cwynar ◽  
Kathy D. Garcia ◽  
Robert A. Schein
Keyword(s):  
Human Factors ◽  
Rotational Motion ◽  
Time Delays ◽  
System Development ◽  
Contact Dynamics ◽  
Summary Table ◽  
Control Authority

This paper describes the results of system development simulations conducted to resolve key human factors issues involved in the capture of satellites having rotational motion, using both manned and remotely piloted vehicles. These man-in-the-loop simulations of remotely piloted Orbital Maneuvering Vehicle (OMV) spacecraft, combined with recent on-orbit experience from Manned Maneuvering Unit (MMU) capture and retrieval missions, have provided results related to many of the human factors issues inherent in such piloting tasks. The results discussed relate to control authority, piloting techniques, communications time delays, plume impingement, contact dynamics, controls, and displays. The paper concludes with a summary table of knowledge established through simulations and mission experience that is applicable to capture and retrieval of dynamic satellites.

Human Factors Engineering Aspects of Satellite Communication Systems

1974 ◽  
Vol 18 (5) ◽  
pp. 604-623 ◽  
Author(s):  
James W. Kuhr ◽  
Leonard W. Tobias
Keyword(s):  
Human Factors ◽  
Communication Systems ◽  
Satellite Communication ◽  
System Development ◽  
Digital Data ◽  
Human Factors Engineering ◽  
Test And Evaluation ◽  
Function Allocation ◽  
Future System ◽  
Military Procurement

Development of satellite communication systems for military use involves human factors engineering in such new areas as digital data handling and computer assistance, besides the well-known areas: function allocation, task analysis, control and display arrangement, workplace layout and personnel subsystem test and evaluation. This paper deals with contributions made during definition, design and verification of the Air Force Satellite Communication System and associated Navy and Army versions. The description of system development provides an up-to-date case study of human factors engineering problems in a military procurement setting. Recommendations are made concerning future system planning.

scholarly journals Are We There Yet? Human Factors Knowledge and Health Information Technology – the Challenges of Implementation and Impact

2017 ◽  
Vol 26 (01) ◽  
pp. 84-91 ◽  
Author(s):  
P. Turner ◽  
A. Kushniruk ◽  
C. Nohr
Keyword(s):  
Information Technology ◽  
Human Factors ◽  
Health Information Technology ◽  
Health Information ◽  
System Development ◽  
Evidence Base ◽  
Unintended Consequences ◽  
Active Involvement ◽  
Usability Problems ◽  
Development Life Cycle

Summary Objective: To review the developments in human factors (HF) research on the challenges of health information technology (HIT) implementation and impact given the continuing incidence of usability problems and unintended consequences from HIT development and use. Methods: A search of PubMed/Medline and Web of Science® identified HF research published in 2015 and 2016. Electronic health records (EHRs) and patient-centred HIT emerged as significant foci of recent HF research. The authors selected prominent papers highlighting ongoing HF and usability challenges in these areas. This selective rather than systematic review of recent HF research highlights these key challenges and reflects on their implications on the future impact of HF research on HIT. Results: Research provides evidence of continued poor design, implementation, and usability of HIT, as well as technology-induced errors and unintended consequences. The paper highlights support for: (i) strengthening the evidence base on the benefits of HF approaches; (ii) improving knowledge translation in the implementation of HF approaches during HIT design, implementation, and evaluation; (iii) increasing transparency, governance, and enforcement of HF best practices at all stages of the HIT system development life cycle. Discussion and Conclusion: HF and usability approaches are yet to become embedded as integral components of HIT development, implementation, and impact assessment. As HIT becomes ever-more pervasive including with patients as end-users, there is a need to expand our conceptualisation of the problems to be addressed and the suite of tactics and strategies to be used to calibrate our pro-active involvement in its improvement.

Practical Workload Assessment in the Development Process

1987 ◽  
Vol 31 (12) ◽  
pp. 1408-1410 ◽  
Author(s):  
John B. Shafer
Keyword(s):  
Human Factors ◽  
Development Process ◽  
System Development ◽  
Practical Approach ◽  
Physiological Measures ◽  
Behavioral Reactions ◽  
Antecedent Conditions ◽  
Level Of Difficulty ◽  
Absolute Concept ◽  
Operator Workload

The objective was to structure the concept of workload in a practical way which would permit Human Factors Systems Engineers to apply this concept to various phases of the development process. Workload is a qualitative rather than absolute concept which, like motivation, is inferred to exist by measuring the relative behavioral reactions to certain conditions. Workload may be thought of as an intervening variable between physical, mental, visual, vocal, or auditory antecedent conditions, and whatever performance-based, subjective or physiological measures that may be sensitive enough to reflect changes in the antecedent conditions. The practical approach has been to consider workload as the number of things to do modified by the level of difficulty. This concept has successfully permitted HF Systems Engineers to assess operator workload at progressive levels of system development.

A Technology Forecasting and Assessment Method for Evaulating System Utility and Operator Workload

1984 ◽  
Vol 28 (1) ◽  
pp. 31-35 ◽  
Author(s):  
Robert G. Eggleston ◽  
Philip V. Kulwicki
Keyword(s):  
Human Factors ◽  
Technology Assessment ◽  
System Development ◽  
Assessment Method ◽  
Top Down ◽  
Technology Forecasting ◽  
Technical Performance ◽  
Performance System ◽  
Individual Candidate ◽  
Operator Workload

In the context of system design, technology assessment often proceeds in a bottom-up fashion, beginning with an evaluation of individual candidate system technologies. Issues of technology integration and human factors considerations are not addressed until later in system development. This paper proposes the use of a top down approach to technology assessment. The top-down approach has the advantage of evaluating technologies along dimensions of system utility, as well as technical performance, and treating human factors early in conceptual design. A technology forecasting and assessment methodology is described wherein technologies can be evaluated quantitatively in terms of technical performance, system utility, and operator workload.

Ground Control Considerations for Remotely Piloted Spacecraft

1984 ◽  
Vol 28 (1) ◽  
pp. 40-44 ◽  
Author(s):  
Craig Hartley ◽  
Dave Cwynar ◽  
Lex Ray ◽  
Kathy Garcia
Keyword(s):  
Human Factors ◽  
Visual Aids ◽  
Design Issues ◽  
Vehicle Performance ◽  
Performance Variables ◽  
Authority Control ◽  
Task Requirements ◽  
Control Authority ◽  
Society Annual ◽  
And Function

To augment the capabilities of the space transportation system, NASA has funded studies aimed at developing a reusable, remotely piloted spacecraft capable of delivering and retrieving payloads at altitudes and inclinations beyond the reach of the present Shuttle Orbiters. Development of such a remotely piloted spacecraft involves five major categories of human factors design issues related to controllability: 1) mission conditions including thruster plume impingements and signal time delays; 2) vehicle performance variables including control authority, control harmony, minimum impulse, and cross coupling of accelerations; 3) maneuvering task requirements such as target distance and dynamics; 4) control parameters including various control modes and rate/displacement deadbands; and 5) display parameters involving camera placement and function, visual aids, and presentation of operational feedback from the spacecraft. To resolve these human factors design issues, the Martin Marietta Company is presently engaged in a program of research based on high fidelity simulations of remotely piloted spacecraft operations. Preliminary results of these studies will be presented in an interactive session at the 1984 Human Factors Society Annual Convention.

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